Steel fireproof door with reinforced structure

Abstract

The invention belongs to the technical field of fireproof doors, and particularly relates to a steel fireproof door with a reinforced structure, which comprises a door frame and a door body, the reinforcing pieces are arranged on the front side and the rear side of the door body; the liquid storage mechanism is arranged at the upper end of the door frame; the feeding mechanism is arranged in the middle of the door body; the abutting block is arranged at the upper end of the feeding mechanism; the reinforcing mechanism comprises a first reinforcing part arranged at the top of the door body and second reinforcing parts arranged on the left side and the right side of the door body; the ventilation mechanism is arranged at the lower end of the door body; and the driving mechanism comprises a driving part arranged at the abutting block, a locking part is arranged on the driving part, and a winding part is arranged on the locking part. By integrating thermal response driving, mechanical reinforcement, linkage sealing and manual intervention reset mechanisms, the safety and reliability of the fireproof door under extreme working conditions such as fire disasters are remarkably improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of fireproof doors, and particularly relates to a steel fireproof door with a reinforcing structure. BACKGROUND

[0002] With the continuous improvement of modern building safety requirements, fireproof doors, as important passive fireproof components in buildings, play a key role in preventing fire spread, controlling smoke diffusion, and ensuring personnel safety evacuation during a fire. In particular, in high-rise buildings, underground spaces, and densely populated areas with high fire safety requirements, the performance of fireproof doors directly affects life and property safety and fire rescue efficiency.

[0003] Currently, widely used steel fireproof doors on the market are usually composed of a door frame, a door body, a door closer, a door lock, and internal filling of fire-resistant materials, and have certain fire-resistant and heat-insulating performance. However, in actual application, especially in high-temperature fire environments, traditional fireproof doors still have many technical defects and safety hazards: Insufficient structural strength, easy to deform and fail under high temperature or impact. During the continuous combustion of a fire, the door body and door frame are easily warped, expanded, or locally softened due to uneven heating or long-term high-temperature action, resulting in a decrease in the sealing performance between the door body and the door frame, and even problems such as door body falling off and failure to close normally. In addition, the external force exerted by the explosion shock wave can also damage the door body structure, affecting its integrity and stability.

[0004] Single passive response mechanism, lack of intelligent linkage function. Existing fireproof doors mostly rely on door closers to achieve automatic closing, and the action is usually triggered by human pushing or smoke sensing signals, and cannot automatically enhance its protection capability according to the development of the fire. Once the door body is closed, without further mechanical reinforcement measures, it is still difficult to resist the risk of high-pressure smoke penetration or structural damage in the fire scene.

[0005] Ventilation and sealing state switching is inconvenient, affecting the balance between daily use and emergency response. Some fireproof doors are provided with ventilation opening structures to meet the daily ventilation needs, but need to be closed in time to prevent smoke spread when a fire occurs. In the existing technology, the opening and closing of the ventilation opening mostly rely on electric control or manual operation, and there are problems such as power failure, response lag, and inconvenient operation, which makes it difficult to achieve automatic and reliable sealing under fire conditions.

[0006] Unlocking and resetting are difficult in emergency situations. When the fireproof door automatically starts the reinforcing mechanism in a fire, it often lacks a convenient manual intervention mechanism to release the locking state for emergency evacuation or rescue passage. At the same time, the resetting operation of the door body and related mechanisms after the disaster is complex, affecting the subsequent normal use. SUMMARY

[0007] In view of the deficiencies of the prior art, the present application provides a steel fireproof door with a reinforcing structure.

[0008] In order to achieve the above-mentioned purpose, the technical scheme of the present application is as follows: A steel fireproof door with a reinforcing structure comprises a door frame and a door body, and lock holes are formed in the inner walls of the left and right sides of the door frame. Reinforcing members are arranged on the front and back sides of the door body to improve the overall strength of the door body. A liquid storage mechanism is arranged at the upper end of the door frame to store cooling medium. A feeding mechanism is arranged at the middle part of the door body. A resisting block is arranged at the upper end of the feeding mechanism, and a tooth groove is formed in the inner wall of one side of the resisting block. The reinforcing mechanism comprises a first reinforcing part arranged at the top of the door body and a second reinforcing part arranged at the left and right sides of the door body. A ventilation mechanism is arranged at the lower end of the door body. The driving mechanism comprises a driving part arranged at the resisting block, a locking part arranged on the driving part, and a winding part arranged on the locking part. When a fire occurs, the feeding mechanism deforms due to heat and pushes the resisting block upward, which activates the first reinforcing part and the second reinforcing part. During normal use, the ventilation mechanism is open, and when a fire occurs, the movement of the second reinforcing part causes the ventilation mechanism to close.

[0009] In a preferred embodiment, the reinforcing member comprises a frame fixedly connected to the side of the door body, and the corresponding two frames are fixedly connected with horizontal rods in an array.

[0010] In a preferred embodiment, the liquid storage mechanism comprises a liquid storage tank formed at the upper end of the door frame, a plurality of through holes are formed in an array at the lower end of the liquid storage tank, a sleeve block is fixedly connected to the through hole by a support rod, a T-shaped rod is slidingly inserted into the sleeve block, a sealing plate is fixedly connected to the lower end of the T-shaped rod, and a first compression spring is fixedly connected between the sealing plate and the sleeve block.

[0011] In a preferred embodiment, the feeding mechanism comprises a movable groove formed in the middle part of the door body, and the resisting block is slidingly connected in the movable groove, a heat-conducting plate is fixedly connected to the inner cavity bottom surface of the movable groove, a plurality of springs are connected in an array to the top surface of the heat-conducting plate, a push plate is fixedly connected to the upper end of the spring, heat-absorbing plates are fixedly connected to the front and back sides of the door body, and the heat-absorbing plates are fixedly connected with the heat-conducting plate.

[0012] In a preferred scheme, the first reinforcing part comprises a sliding groove, which is arranged at the top of the door body, a lifting plate is slidably connected in the sliding groove, an array of through grooves are arranged at the upper end of the sliding groove, a hollow column is slidably connected in the through groove, a second compression spring is fixedly connected between the hollow column and the through groove, a vertical rod is fixedly connected to the inner wall of the hollow column by a support rod, and the other end of the vertical rod is fixedly connected to the lifting plate, a plurality of infusion channels are communicated between the sliding groove and the movable groove, and a connecting rod is arranged in two of the infusion channels, one end of the connecting rod is fixedly connected to the lifting plate, and the other end is fixedly connected to the abutting block.

[0013] In a preferred scheme, the second reinforcing part comprises a moving cavity, which is arranged at the two sides of the door body in an array, a moving block is slidably connected in the moving cavity, a lock rod is fixedly connected to one side of the moving block, a third compression spring is fixedly connected between the moving block and the moving cavity, a moving groove is arranged between the moving blocks corresponding in upper and lower positions, a square rod is fixedly connected between the moving blocks corresponding in upper and lower positions and slidably connected in the moving groove, the side of each of the two moving blocks located in the middle is fixedly connected to a force rod, and the side of each of the two moving blocks located below is fixedly connected to a trapezoidal block.

[0014] In a preferred scheme, the driving part comprises a round rod, which is rotatably connected to the door body by a bearing, a gear is mounted on the round rod, moving rods are slidably inserted into the two ends of the round rod, a disc is fixedly connected to the moving rods by a support rod, a plurality of butt rods are connected to the disc in a ring shape, a fixed disc and a first handle are fixedly connected to one end of the moving rod, a plurality of lock grooves are arranged in a ring shape on the fixed disc, a fifth compression spring is fixedly connected to one side of the fixed disc, and the other end of the fifth compression spring is fixedly connected to the round rod, and a plurality of butt grooves are arranged in a ring shape on the gear.

[0015] In a preferred scheme, the ventilation mechanism comprises a lifting groove, which is arranged at the lower end of the door body, a ventilation groove is arranged at the lower end of the lifting groove, a guide groove is arranged at the upper end of the lifting groove, a blocking block is slidably connected in the lifting groove, a fourth compression spring is fixedly connected between the upper end of the blocking block and the lifting groove, a force rod is slidably connected in the guide groove, one end of the force rod is fixedly connected to the blocking block, and positioning holes are arranged at the lower ends of the left and right sides of the blocking block.

[0016] In a preferred scheme, the locking part comprises a limiting rod, which is rotatably connected to the cross rod by a pin shaft, a protruding part is arranged at the lower end of the limiting rod and matched with the lock groove, a sixth compression spring is fixedly connected between the two corresponding limiting rods and connected to a pulling rope at the upper end thereof.

[0017] In a preferred scheme, the winding part comprises rotating rods, both of which are rotatably connected to the door body through bearings, both of which are fixedly installed with winding rollers, and the winding rollers are fixedly connected with the traction ropes, both of the rotating rods are slidingly inserted with hexagonal prisms, the middle part of the hexagonal prism is fixedly connected with a positioning rod, both ends of the hexagonal prism are fixedly connected with second handles, one side of the second handle is fixedly connected with a seventh compression spring, and the other end of the seventh compression spring is fixedly connected with the rotating rod, and the inner cavity bottom surface of the movable groove is fixedly connected with a positioning block through a supporting rod.

[0018] Compared with the prior art, the present application has the following advantages: The present application sets up a temperature-driven reinforcing mechanism, including a top first reinforcing part and two side second reinforcing parts. When a fire occurs, the feeding mechanism inside the door body is triggered by heat, pushing the abutting block to move upwards, driving the hollow column to insert into the top through hole of the door frame, and the lock rod to insert into the side wall lock hole of the door frame, forming a three-dimensional reinforcing structure of "top and side locking". This design not only greatly enhances the connection strength between the door body and the door frame, effectively preventing the door body from warping, falling off or deforming under high temperature, but also achieves automatic response through mechanical linkage, without the need for external power supply, ensuring reliable operation in the event of power failure or control system failure, greatly improving the structural integrity and stability of the fire door in the fire scene; The present application utilizes the mechanical action in the reinforcing process to trigger the release of cooling medium and the closure of the ventilation opening. When the hollow column is inserted into the through hole of the door frame, it moves upwards to lift the sealing plate, causing the cooling liquid in the liquid storage tank to flow into the interior of the door body, thereby cooling the door body, delaying the deterioration of material performance, and prolonging the fire resistance time. At the same time, the movement of the second reinforcing part synchronously drives the trapezoidal block to disengage from the positioning hole, causing the blocking block to automatically fall under the action of gravity and spring rebound, closing the ventilation groove and achieving seamless switching from "ventilation" to "sealing". This design solves the contradiction between ventilation and sealing of traditional fire doors, ensuring smooth daily ventilation, automatic and reliable sealing in the event of fire, and effectively blocking the spread of smoke; The present application designs a unique driving and unlocking mechanism. By operating the second handle to wind the traction rope, the locking of the fixed disc by the limiting rod can be released, allowing the driving part to rotate freely. At this time, the abutting block can automatically reset under the action of gravity and spring; if the automatic reset is blocked, the first handle can also be manually rotated to forcibly drive the gear to rotate in the opposite direction, pushing the abutting block to move downwards, thereby releasing all the reinforcing states and achieving emergency opening of the door body. This design gives the operator the ability to quickly unlock and conveniently reset after the disaster in an emergency, greatly improving the practicality and emergency response flexibility of the system. BRIEF DESCRIPTION OF DRAWINGS

[0019] The disclosure of the present application will be described with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of the present application. In the drawings, the same reference numerals are used to refer to the same parts. Among them: Figure 1 It is a schematic structural diagram of the present invention as a whole; Figure 2 It is a rear view of the overall structure of the present invention; Figure 3 It is a structural schematic diagram of the door frame of the present invention; Figure 4 This invention Figure 3 sectional view of Figure 5 This invention Figure 4 An enlarged schematic diagram of part A shown in FIG; Figure 6 It is a structural schematic diagram of the door body of the present invention; Figure 7 This invention Figure 6 sectional view of Figure 8 This invention Figure 7 Front view of Figure 9 This invention Figure 7 An enlarged schematic diagram of part B shown in ; Figure 10 This invention Figure 7 An enlarged schematic diagram of part C is shown in FIG; Figure 11 This invention Figure 7 An enlarged schematic diagram of portion D shown in FIG; Figure 12 This invention Figure 7 An enlarged schematic diagram of part E shown in FIG; Figure 13 It is a schematic structural diagram of the interference block of the present invention; Figure 14 It is a schematic diagram of the connection between the reinforcement member and the driving mechanism of the present invention; Figure 15 It is a structural schematic diagram of the driving mechanism of the present invention; Figure 16 It is a structural schematic diagram of the driving part of the present invention; Figure 17 is an exploded view of the driving portion of the present invention; Figure 18 It is a cross-sectional view of the winding portion of the present invention; Figure 19 This invention Figure 7 An enlarged schematic diagram of part F is shown in FIG.

[0020] In the accompanying drawings, the components represented by the reference numerals are as follows: 1, door frame; 11, lock hole; 2, door body; 3, reinforcing piece; 31, frame; 32, cross bar; 4, liquid storage mechanism; 5, feeding mechanism; 6, abutting block; 61, tooth groove; 7, reinforcing mechanism; 8, ventilation mechanism; 9, driving mechanism; 41, liquid storage groove; 42, through hole; 43, sleeve block; 44, T-shaped rod; 45, sealing plate; 46, first compression spring; 51, movable groove; 52, heat-conducting plate; 53, spring; 54, push plate; 55, heat-absorbing plate; 71, first reinforcing part; 72, second reinforcing part; 711, sliding groove; 712, lifting plate; 713, through groove; 714, hollow column; 715, second compression spring; 716, vertical rod; 717, infusion channel; 718, connecting rod; 721, moving cavity; 722, moving block; 723, locking rod; 724, third compression spring; 725, moving groove; 726, square rod; 727, force-bearing rod; 728, trapezoidal block; 81, lifting groove; 82, ventilation groove; 83, guide groove; 84, plugging block; 85, fourth compression spring; 86, force-applying rod; 87, positioning hole; 91, driving part; 92, locking part; 93, winding part; 911, round rod; 912, gear; 913, moving rod; 914, disc; 915, butt joint rod; 916, fixed disc; 917, first handle; 918, fifth compression spring; 919, butt joint groove; 921, limiting rod; 922, sixth compression spring; 923, traction rope; 931, rotating rod; 932, winding roller; 933, hexagonal prism; 934, positioning rod; 935, second handle; 936, seventh compression spring; 937, positioning block. DETAILED DESCRIPTION

[0021] To make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with specific examples.

[0022] It should be noted that, unless otherwise defined, the technical or scientific terms used in the present invention should have the usual meanings understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0023] Please see the attached Figures 1 to 14 As shown, this embodiment provides a steel fire door with a reinforced structure, comprising a door frame 1 and a door body 2, and lock holes 11 are provided on the left and right inner walls of the door frame 1; Reinforcement members 3 are provided on the front and rear sides of the door body 2 to improve the overall strength of the door body 2; The liquid storage mechanism 4 is provided at the upper end of the door frame 1 and is used to store the cooling medium; Feeding mechanism 5, the feeding mechanism 5 is arranged in the middle of the door body 2; The resistance block 6 is provided at the upper end of the feeding mechanism 5, and a tooth groove 61 is provided on the inner wall of one side of the resistance block 6; The reinforcement mechanism 7 includes a first reinforcement portion 71 provided on the top of the door body 2 and a second reinforcement portion 72 provided on the left and right sides of the door body 2; The ventilation mechanism 8 is provided at the lower end of the door body 2; The driving mechanism 9 includes a driving portion 91 disposed at the abutment block 6 , a locking portion 92 disposed on the driving portion 91 , and a winding portion 93 disposed on the locking portion 92 ; When a fire occurs, the feeding mechanism 5 is deformed by heat and pushes the abutment block 6 upward, and the abutment block 6 moves upward to activate the first reinforcement part 71 and the second reinforcement part 72; During normal use, the ventilation mechanism 8 is open. When a fire occurs, the movement of the second reinforcement portion 72 causes the ventilation mechanism 8 to be closed.

[0024] In this embodiment, the door frame 1 and the door body 2 are connected by a hinge, and a door closer and a door lock are arranged therebetween. In daily use, only the door lock on the door body 2 is used, and the reinforcing mechanism 7 is not used, so that the door body 2 can be quickly opened and closed. The door closer can automatically and slowly close the door body 2 after the door body 2 is opened, without the need for manual pushing, which is convenient and labor-saving. In addition, the connecting part of the door frame 1 and the door body 2, i.e. the hinge, is made of high-strength material and can withstand large external force and impact force, thereby ensuring the stability and durability of the door body 2. In emergency situations such as fire, the structural design of the door frame 1 and the door body 2 can effectively prevent the spread of fire and gain valuable time for personnel evacuation and rescue.

[0025] Secondly, please refer to Figure 14 The reinforcing member 3 includes a frame 31 fixedly connected to the side of the door body 2, and the corresponding two frames 31 are fixedly connected with the cross bars 32 arranged in an array.

[0026] In this embodiment, reinforcing members 3 are arranged on both sides of the door body 2, which makes the door body 2 more stable against deformation and rupture when subjected to external impact, thereby effectively prolonging the service life of the fireproof door and protecting the safety of people's lives and property.

[0027] Thirdly, please refer to Figure 4 and Figure 5 The liquid storage mechanism 4 includes a liquid storage groove 41 opened at the upper end of the door frame 1, and the lower end of the liquid storage groove 41 is arranged with through holes 42 in an array, the through holes 42 are fixedly connected with sleeve blocks 43 inside by means of supporting rods, the T-shaped rods 44 are slidingly inserted into the sleeve blocks 43, the lower end of the T-shaped rod 44 is fixedly connected with a sealing plate 45, and the first compression spring 46 is fixedly connected between the sealing plate 45 and the sleeve block 43.

[0028] Secondly, please refer to Figures 6 to 9 The feeding mechanism 5 includes a movable groove 51 opened in the middle of the door body 2, and the abutting block 6 is slidingly connected in the movable groove 51, the inner cavity bottom surface of the movable groove 51 is fixedly connected with a heat conduction plate 52, the top surface of the heat conduction plate 52 is connected with springs 53 arranged in an array, the upper end of the spring 53 is fixedly connected with a push plate 54, the front and rear sides of the door body 2 are fixedly connected with heat absorbing plates 55, and the heat absorbing plates 55 are fixedly connected with the heat conduction plate 52.

[0029] In this embodiment, when a fire occurs, the ambient temperature will rise significantly. At this time, the heat absorbing plates 55 will begin to absorb the heat around them and transfer the heat to the heat conduction plate 52 connected thereto. The heat conduction plate 52 functions to further transfer the heat absorbed by the heat absorbing plates 55 to other parts.

[0030] At the same time, the spring 53 (the spring 53 is made of nickel-titanium alloy material, has shape memory effect) is in the contraction state at normal temperature. However, when the ambient temperature rises, the spring 53 will begin to stretch because of the characteristics of its material. This stretching will cause the push plate 54 to move upwards along the movable slot 51. The movable slot 51 provides the push plate 54 with the necessary movement path.

[0031] As the push plate 54 moves upwards, it will further push the abutting block 6 to move upwards along the same path. The movement of the abutting block 6 is part of the entire system, which is used to trigger other mechanisms to respond in time when a fire occurs. The entire process is started by the rise of temperature, without the need for manual start.

[0032] Please refer to Figure 7 , Figure 8 and Figure 10 again, the first reinforcing part 71 includes a sliding slot 711, which is opened at the top of the door body 2, and the lifting plate 712 is slidingly connected in the sliding slot 711. The upper end of the sliding slot 711 is arrayed and has through slots 713 opened therein, and the hollow column 714 is slidingly connected in the through slots 713. The second compression spring 715 is fixedly connected between the hollow column 714 and the through slot 713. The inner wall of the hollow column 714 is fixedly connected with the vertical rod 716 by a support rod, and the other end of the vertical rod 716 is fixedly connected with the lifting plate 712. The sliding slot 711 and the movable slot 51 are communicated with a plurality of infusion channels 717, two of which are provided with the connecting rod 718, one end of which is fixedly connected with the lifting plate 712, and the other end is fixedly connected with the abutting block 6.

[0033] In this embodiment, the abutting block 6 moves upwards, causing the connecting rod 718 to move upwards along the infusion channel 717. The upward movement of the connecting rod 718 drives the lifting plate 712 to move upwards, and the upward movement of the lifting plate 712 drives the vertical rod 716 to move upwards, and the upward movement of the vertical rod 716 drives the hollow column 714 to move upwards, while compressing the second compression spring 715. After the hollow column 714 moves upwards and is inserted into the through hole 42 at the upper end of the door frame 1, it plays a reinforcing role, improving the connection strength of the door body 2 and the door frame 1.

[0034] After the hollow column 714 is inserted into the through hole 42 at the upper end of the door frame 1, the sealing plate 45 is pushed to move upward. The upward movement of the sealing plate 45 drives the T-shaped rod 44 to move upward, and at the same time, the first compression spring 46 is compressed. The upper end of the hollow column 714 is provided with a liquid inlet groove. The cooling medium (cooling liquid, water) in the liquid storage groove 41 flows into the hollow column 714 along the liquid inlet groove, and then flows into the sliding groove 711 through the hollow column 714, and finally enters the movable groove 51 along the liquid delivery channel 717. The cooling medium entering the movable groove 51 cools the spring 53, restores the original state of the spring 53, and drives the push plate 54 to move downward. In addition, the cooling medium entering the door body 2 can cool the door body 2, reducing the risk of deformation of the door body 2 due to high temperature.

[0035] It should be noted that a liquid filling pipe is arranged at the front end of the liquid storage groove 41. After the door frame 1 and the door body 2 are installed, the cooling medium is injected into the liquid storage groove 41. A liquid discharge pipe is arranged at the front end of the movable groove 51, so that the cooling medium in the movable groove 51 can be discharged subsequently. The end portions of the liquid filling pipe and the liquid discharge pipe are both provided with sealing covers. In the initial state, the sealing plate 45 seals the through hole 42, and the cooling medium cannot flow out, until the hollow column 714 is inserted into the through hole 42 and the sealing plate 45 is lifted, and then the cooling medium can flow out along the hollow column 714.

[0036] Please refer to Figure 8 , Figure 11 and Figure 12 again. The second reinforcing part 72 includes a moving cavity 721 arranged in an array on both sides of the door body 2. A moving block 722 is slidably connected in the moving cavity 721. A lock rod 723 is fixedly connected to one side of the moving block 722. A third compression spring 724 is fixedly connected between the moving block 722 and the moving cavity 721. A moving groove 725 is arranged between the moving cavities 721 corresponding in upper and lower positions. A square rod 726 is fixedly connected between the moving blocks 722 corresponding in upper and lower positions and slidably connected in the moving groove 725. The side of each of the two moving blocks 722 located close to the middle is fixedly connected with a force rod 727. The side of each of the two moving blocks 722 located close to the bottom is fixedly connected with a trapezoidal block 728.

[0037] In this embodiment, during the upward movement of the abutting block 6, an acting force is applied to the two force rods 727 on both sides, so that the two force rods 727 move away from each other. The movement of the force rods 727 away from each other drives the movement of the moving blocks 722. The square rods 726 are fixedly connected between the adjacent moving blocks 722 on each side. Therefore, when the moving blocks 722 in the middle move, the moving blocks 722 above and below are simultaneously driven to move, and at the same time, the third compression spring 724 is compressed. The movement of the moving blocks 722 drives the movement of the lock rods 723, so that the lock rods 723 are inserted into the lock holes 11 on the door frame 1, thereby further improving the connection strength of the door body 2 and the door frame 1.

[0038] The first reinforcing part 71 is arranged at the upper end of the door body 2, and the second reinforcing part 72 is arranged at both sides of the door body 2, which not only enhances the impact resistance of the door body 2, but also improves the stability of the door body 2 in extreme environments such as fire. The first reinforcing part 71 provides additional support for the top of the door body 2 through its strong structure. The second reinforcing part 72 forms a stable protective layer on both sides of the door body 2 through its unique locking mechanism, which ensures the close connection between the door body 2 and the door frame 1 even under the strong heat wave caused by fire or explosion impact, preventing the spread of fire and smoke.

[0039] Please refer to Figure 5 , Figure 6 and Figure 7 again, the ventilation mechanism 8 includes a lifting groove 81, which is arranged at the lower end of the door body 2. The lower end of the lifting groove 81 is provided with a ventilation groove 82, and the upper end of the lifting groove 81 is provided with a guide groove 83. A blocking block 84 is slidably connected in the lifting groove 81. A fourth compression spring 85 is fixedly connected between the upper end of the blocking block 84 and the lifting groove 81. A force applying rod 86 is slidably connected in the guide groove 83, and one end of the force applying rod 86 is fixedly connected with the blocking block 84. Positioning holes 87 are arranged at the lower ends of the left and right sides of the blocking block 84.

[0040] In this embodiment, in the initial state, the blocking block 84 is at the upper end of the lifting groove 81, and the fourth compression spring 85 is in a compressed state. The ventilation groove 82 is in an open state, so that the air on both sides of the door body 2 can flow without opening the door body 2. In addition, the trapezoidal block 728 is inserted into the positioning hole 87, which limits the movement of the blocking block 84. When a fire occurs and the second reinforcing part 72 is activated, the movement of the moving block 722 will drive the trapezoidal block 728 to move, so that the trapezoidal block 728 is separated from the positioning hole 87. Then, the blocking block 84 moves downward under the action of its own gravity and the elastic force of the fourth compression spring 85, sealing the ventilation groove 82, so that the air on both sides of the door body 2 cannot flow.

[0041] It should be noted that when the blocking block 84 is at the lowermost end of the lifting groove 81, the upper end of the blocking block 84 is provided with an inclined groove, so as not to hinder the movement of the trapezoidal block 728. In addition, when the blocking block 84 is manually pulled upward, the trapezoidal blocks 728 on both sides are away from each other due to the resistance of the blocking block 84. When the positioning hole 87 moves to the position of the trapezoidal block 728, the trapezoidal block 728 resets and inserts into the positioning hole 87 after losing the resistance.

[0042] Please refer to Figure 15 , Figure 1 and Figure 17The driving part 91 comprises a round rod 911 rotatably connected to the door body 2 through a bearing, a gear 912 mounted on the round rod 911, a moving rod 913 slidingly inserted into both ends of the round rod 911, a disc 914 fixedly connected to the moving rod 913 through a supporting rod, a butt joint rod 915 connected to the disc 914 in a ring shape, a fixed disc 916 and a first handle 917 fixedly connected to one end of the moving rod 913, lock grooves formed in the fixed disc 916 in a ring shape, a fifth compression spring 918 fixedly connected to one side of the fixed disc 916 and the other end of the fifth compression spring 918 fixedly connected to the round rod 911, and butt joint grooves 919 formed in the gear 912 in a ring shape.

[0043] In this embodiment, the tooth grooves 61 on the resisting block 6 are engaged with the gear 912 to realize transmission. Moreover, the gear 912 is mounted on the round rod 911 through a ratchet and pawl mechanism. The ratchet and pawl mechanism ensures that the gear 912 can only rotate in one direction (specifically, as shown in Figure 17 , when the round rod 911 rotates forward, the gear 912 can be driven to rotate; when the round rod 911 rotates reversely, the gear 912 cannot be driven to rotate. At the same time, the gear 912 can rotate forward around the round rod 911, but cannot rotate reversely around the round rod 911, so as to avoid the reverse rotation in the non-operation state. Specifically, when the resisting block 6 moves upward, the gear 912 is driven to rotate around the round rod 911. Since the gear 912 is connected to the round rod 911 through the ratchet and pawl mechanism, the gear 912 can only be driven to rotate when the resisting block 6 moves upward, and the gear 912 cannot rotate reversely around the round rod 911, so that the resisting block 6 cannot reset after moving upward, thereby ensuring the stability of the reinforcing mechanism 7.

[0044] It should be noted that the gear 912 is rotatably connected to the round rod 911 through a bearing, the pawl is fixedly installed on the round rod 911, the inner ring of the gear 912 is hingedly connected to the pawl in a ring shape, and the pawl and the gear 912 are fixedly connected to the reset spring.

[0045] Please refer to Figure 15 again, the locking part 92 comprises a limiting rod 921 rotatably connected to the cross rod 32 through a pin shaft, a protruding part provided at the lower end of the limiting rod 921 and matched with the lock groove, a sixth compression spring 922 fixedly connected between two corresponding limiting rods 921, and a traction rope 923 connected to the upper end of the sixth compression spring 922.

[0046] Please refer to Figure 15 again,Figure 18 and Figure 19 The winding part 93 comprises a rotating rod 931, both of which are rotatably connected to the door body 2 through bearings, both of which are fixedly installed with winding rollers 932, and the winding rollers 932 are fixedly connected with the traction rope 923, both of which are slidingly inserted with hexagonal prisms 933, the middle part of the hexagonal prism 933 is fixedly connected with a positioning rod 934, both ends of the hexagonal prism 933 are fixedly connected with second handles 935, one side of the second handle 935 is fixedly connected with a seventh compression spring 936, and the other end of the seventh compression spring 936 is fixedly connected with the rotating rod 931. The inner cavity bottom surface of the movable groove 51 is fixedly connected with a positioning block 937 by a supporting rod. The function of the seventh compression spring 936 is that when the hexagonal prism 933 slides along the rotating rod 931 and the force disappears, it can drive the hexagonal prism 933 to return to the initial position.

[0047] In this embodiment, when a fire occurs and the reinforcing mechanism 7 has been activated, if it is necessary to forcibly open the door body 2, the locking of the driving part 91 by the locking part 92 should be released first. The specific operation is as follows: hold the second handle 935 and move the second handle 935 and the hexagonal prism 933 forward or backward by a distance, so that the positioning rod 934 is disengaged from the positioning block 937, at this time the hexagonal prism 933 can be rotated; then the hexagonal prism 933 is rotated by the handle, the hexagonal prism 933 rotates to drive the rotating rod 931 and the winding roller 932 to rotate, and the winding roller 932 rotates to wind the traction rope 923. After the winding roller 932 rotates n full turns, the hexagonal prism 933 is moved in the opposite direction by a distance to reset, and the positioning rod 934 is clamped into the positioning block 937, at this time the hexagonal prism 933 cannot be rotated, and the winding roller 932 will not automatically reverse and unwind.

[0048] The upward movement of the traction rope 923 causes the upper ends of the two adjacent limiting rods 921 to approach each other and the lower ends to move away from each other, so that the protruding part at the lower end of the limiting rod 921 is disengaged from the locking slot on the fixed disc 916, at this time the fixed disc 916 loses positioning, and the moving rod 913 and the round rod 911 can rotate freely.

[0049] After the round rod 911 can rotate freely, the abutting block 6 can move downward under the influence of its own gravity, and the tooth groove 61 on the abutting block 6 will engage with the gear 912, thereby driving the round rod 911 to rotate. In addition, the second compression spring 715 will push the hollow column 714, the vertical rod 716, the lifting plate 712, the connecting rod 718 and the abutting block 6 downward under the action of its own elastic force, so as to reset the abutting block 6, thereby improving the smoothness of the reset of the abutting block 6. When the abutting block 6 is reset, the hollow column 714 will also be reset and disengaged from the through hole 42; under the rebounding force of the third compression spring 724, the moving block 722 and the locking rod 723 thereon will also be reset and disengaged from the locking hole 11, at this time the reinforcing mechanism 7 loses its function, and the door body 2 can be freely opened.

[0050] When the abutting block 6 cannot be reset downward under the joint action of its own gravity and the rebound force of the second compression spring 715, the first handle 917 is held and pushed toward the door body 2. The movement of the first handle 917 drives the movement rod 913 and the disc 914 to move, so that the abutting rod 915 on the disc 914 is inserted into the abutting groove 919 on the gear 912. Then, the first handle 917 is reversely rotated to drive the gear 912 to rotate synchronously with the round rod 911 and the movement rod 913. The reverse rotation of the gear 912 forcibly drives the abutting block 6 to reset, so that the reinforcing mechanism 7 is disabled, and the door body 2 can be freely opened.

[0051] It should be noted that after the locking of the locking part 92 is lost, the first handle 917 can be manually rotated to drive the movement rod 913 and the round rod 911 to rotate forward. The forward rotation of the round rod 911 drives the gear 912 to rotate, and the gear 912 is in meshing transmission with the tooth groove 61 on the abutting block 6, so as to drive the abutting block 6 to move upward, so that the reinforcing mechanism 7 can be started by manual mode.

[0052] The working principle of the present application is as follows: When a fire occurs, the heat-absorbing plate 55 on the door body 2 absorbs heat and transmits it to the heat-conducting plate 52, so that the spring 53 made of nickel-titanium alloy in the movable groove 51 is heated and elongated to push the push plate 54 and the abutting block 6 connected thereto to move upward; the upward movement of the abutting block 6 drives the lifting plate 712 of the first reinforcing part 71 and the hollow column 714 to move upward through the connecting rod 718, so that the hollow column 714 is inserted into the through hole 42 on the door frame 1 to realize top locking, and the sealing plate 45 in the liquid storage mechanism 4 is triggered to move upward to release the cooling medium into the door body 2 to cool the key components and promote the spring 53 to recover; on the other hand, the abutting block 6 pushes the stress rod 727 of the second reinforcing part 72 to drive the lock rods 723 on both sides to be inserted into the lock holes 11 on the door frame 1 to realize lateral reinforcement, and in the process, the trapezoidal block 728 is separated from the positioning hole 87 of the ventilation mechanism 8, so that the blocking block 84 falls to close the ventilation groove 82 under the action of gravity and the fourth compression spring 85 to prevent the smoke from flowing; the whole reinforcing process is automatically triggered by temperature change without manual intervention, and the gear 912 in the driving mechanism 9 and the ratchet-pawl mechanism ensure one-way locking of the action, and in an emergency, the blocking can be released by manually operating the winding part 93 to forcibly reset the abutting block 6 to open the fireproof door, so as to realize the intelligent fireproof function combining automatic response, reliable locking and emergency opening.

[0053] Those skilled in the art should understand that the above discussion of any embodiment is only intended to be illustrative and is not intended to be in any way limiting as to the scope of the present application, including the claims that follow it; the above embodiments or technical features among different embodiments can also be combined, steps can be implemented in any order, and there are many other changes to the different aspects of the present application as described above, which are not provided in details for the sake of brevity.

[0054] The present application is intended to cover all such alternatives, modifications, and variations as fall within the broad scope of the appended claims. Accordingly, any one of the above-described embodiments of the present application can be further modified than or combined with another in addition to the changes discussed in the above description.

Claims

1. A steel fire door with a reinforced structure, characterized by: It comprises a door frame (1) and a door body (2), and the inner walls on both the left and right sides of the door frame (1) are provided with lock holes (11); A reinforcement member (3), the reinforcement member (3) being arranged on the front and rear sides of the door body (2) and used for improving the overall strength of the door body (2); A liquid storage mechanism (4), the liquid storage mechanism (4) is arranged at the upper end of the door frame (1) and is used to store cooling medium; A feeding mechanism (5), the feeding mechanism (5) is arranged in the middle of the door body (2); A resistance block (6), the resistance block (6) is arranged at the upper end of the feeding mechanism (5), and a tooth groove (61) is provided on an inner wall of one side of the resistance block (6); A reinforcement mechanism (7), the reinforcement mechanism (7) comprising a first reinforcement portion (71) disposed on the top of the door body (2), and second reinforcement portions (72) disposed on the left and right sides of the door body (2); A ventilation mechanism (8), the ventilation mechanism (8) is arranged at the lower end of the door body (2); A driving mechanism (9), the driving mechanism (9) comprising a driving portion (91) disposed at the abutting block (6), a locking portion (92) disposed on the driving portion (91), and a winding portion (93) disposed on the locking portion (92); When a fire occurs, the feeding mechanism (5) is deformed by heat and pushes the abutment block (6) upward, and the abutment block (6) moves upward to activate the first reinforcement part (71) and the second reinforcement part (72); During normal use, the ventilation mechanism (8) is opened, and when a fire occurs, the movement of the second reinforcement part (72) causes the ventilation mechanism (8) to be closed.

2. The steel fire door with a reinforced structure according to claim 1, characterized in that: The reinforcement member (3) comprises a frame (31), the frame (31) is fixedly connected to the side of the door body (2), and a cross bar (32) is fixedly connected between two corresponding frames (31) in an array-distributed manner.

3. The steel fire door with a reinforced structure according to claim 1, characterized in that: The liquid storage mechanism (4) comprises a liquid storage tank (41), the liquid storage tank (41) is provided at the upper end of the door frame (1), the lower end of the liquid storage tank (41) is provided with through holes (42) distributed in an array, a sleeve block (43) is fixedly connected in the through hole (42) by a support rod, a T-shaped rod (44) is slidably inserted on the sleeve block (43), a sealing plate (45) is fixedly connected to the lower end of the T-shaped rod (44), and a first compression spring (46) is fixedly connected between the sealing plate (45) and the sleeve block (43).

4. The steel fire door with a reinforced structure according to claim 1, characterized in that: The feeding mechanism (5) includes a movable groove (51), the movable groove (51) is opened in the middle of the door body (2), and the resistance block (6) is slidably connected in the movable groove (51), the bottom surface of the inner cavity of the movable groove (51) is fixedly connected to a heat conducting plate (52), the top surface of the heat conducting plate (52) is connected to springs (53) distributed in an array, the upper end of the spring (53) is fixedly connected to a push plate (54), and the front and rear sides of the door body (2) are fixedly connected to heat absorbing plates (55), and the heat absorbing plates (55) are fixedly connected to the heat conducting plates (52).

5. The steel fire door with a reinforced structure according to claim 4, characterized in that: The first reinforcement portion (71) includes a sliding groove (711), the sliding groove (711) is provided at the top of the door body (2), a lifting plate (712) is slidably connected in the sliding groove (711), through grooves (713) are provided at the upper end of the sliding groove (711) in an array distribution, a hollow column (714) is slidably connected in the through groove (713), a second compression spring (715) is fixedly connected between the hollow column (714) and the through groove (713), and the hollow column ( The inner wall of the sliding groove (714) is fixedly connected to a vertical rod (716) by a support rod, and the other end of the vertical rod (716) is fixedly connected to the lifting plate (712). A plurality of infusion channels (717) are connected between the sliding groove (711) and the movable groove (51), wherein connecting rods (718) are provided in two of the infusion channels (717), and one end of the connecting rod (718) is fixedly connected to the lifting plate (712), and the other end is fixedly connected to the abutment block (6).

6. The steel fire door with a reinforced structure according to claim 1, characterized in that: The second reinforcement portion (72) includes a moving cavity (721), which is distributed in an array and opened on both sides of the door body (2). A moving block (722) is slidably connected in the moving cavity (721), and a locking rod (723) is fixedly connected to one side of the moving block (722). A third compression spring (724) is fixedly connected between the moving block (722) and the moving cavity (721). A moving groove (725) is opened between the upper and lower corresponding moving cavities (721), and a square rod (726) is fixedly connected between the upper and lower corresponding moving blocks (722), and the square rod (726) is slidably connected in the moving groove (725). The two moving blocks (722) located in the middle are fixedly connected to a force-bearing rod (727) on one side close to each other, and the two moving blocks (722) located at the bottom are fixedly connected to a trapezoidal block (728) on one side close to each other.

7. The steel fire door with a reinforced structure according to claim 1, characterized in that: The ventilation mechanism (8) comprises a lifting groove (81), the lifting groove (81) is provided at the lower end of the door body (2), a ventilation groove (82) is provided at the lower end of the lifting groove (81), a guide groove (83) is provided at the upper end of the lifting groove (81), a blocking block (84) is slidably connected in the lifting groove (81), a fourth compression spring (85) is fixedly connected between the upper end of the blocking block (84) and the lifting groove (81), a force rod (86) is slidably connected in the guide groove (83), and one end of the force rod (86) is fixedly connected to the blocking block (84), and positioning holes (87) are provided at the lower ends of the left and right sides of the blocking block (84).

8. The steel fire door with a reinforced structure according to claim 1, characterized in that: The driving part (91) includes a round rod (911), which is rotatably connected to the door body (2) through a bearing, a gear (912) is installed on the round rod (911), and a moving rod (913) is slidably inserted at both ends of the round rod (911), a circular disc (914) is fixedly connected to the moving rod (913) by using a support rod, and a docking rod (915) is connected to the circular disc (914) in an annular manner, one end of the moving rod (913) is fixedly connected to a fixed disc (916) and a first handle (917), and a locking groove is provided in an annular manner on the fixed disc (916), a fifth compression spring (918) is fixedly connected to one side of the fixed disc (916), and the other end of the fifth compression spring (918) is fixedly connected to the round rod (911), and a docking groove (919) is provided in an annular manner on the gear (912).

9. The steel fire door with a reinforced structure according to claim 2, characterized in that: The locking portion (92) includes a limiting rod (921), which is rotatably connected to the cross bar (32) via a pin shaft, and a protrusion is provided at the lower end of the limiting rod (921) and is adapted to the locking groove. A sixth compression spring (922) is fixedly connected between two corresponding limiting rods (921), and a traction rope (923) is connected to the upper end thereof.

10. The steel fire door with a reinforced structure according to claim 4, characterized in that: The winding portion (93) includes a rotating rod (931), and the two rotating rods (931) are both rotatably connected to the door body (2) through bearings. A winding roller (932) is fixedly installed on the two rotating rods (931). A hexagonal prism (933) is slidably inserted on the two rotating rods (931). A positioning rod (934) is fixedly connected to the middle of the hexagonal prism (933). Both ends of the hexagonal prism (933) are fixedly connected to a second handle (935). One side of the second handle (935) is fixedly connected to a seventh compression spring (936), and the other end of the seventh compression spring (936) is fixedly connected to the rotating rod (931). The bottom surface of the inner cavity of the movable groove (51) is fixedly connected to a positioning block (937) using a support rod.

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