Light fixed doorsill flood-proof protective air-tight door

Abstract

The invention discloses a light fixed doorsill flood-proof protective air-tight door. The light fixed doorsill flood-proof protective air-tight door comprises a door frame, two door leaves and two linkage locking assemblies. The two door leaves are hinged to the two sides of the door frame, and each door leaf is of an aluminum honeycomb sandwich structure. The two linkage locking assemblies correspond to the two door leaves correspondingly. The linkage locking assembly comprises a driving rotary disc, an upper linkage rod, a lower linkage rod, an upper plug pin and a lower plug pin. An upper chassis is hinged to the upper bolt and is connected with the door leaf; a lower chassis is hinged to the lower bolt and is connected with the door leaf; a main chassis is hinged to the driving rotary disc and connected with the door leaf. Two ends of the upper linkage rod are respectively hinged with the upper bolt and the driving turntable; two ends of the lower linkage rod are respectively hinged with the driving turntable and the lower bolt; and when the driving turntable rotates by an angle, the upper bolt and the lower bolt synchronously rotate to respectively rotate the upper frame and the lower frame of the door leaf. By means of the arrangement, the door leaf is designed to be light, and the locking structure of the door leaf can achieve the functions of being reliable in driving and high in reaction efficiency.

Description

Technical Field

[0001] The present invention belongs to the technical field of civil air defense engineering protection equipment, and in particular relates to a lightweight fixed threshold anti-flooding protective closed door. Background Art

[0002] Civil air defense doors, also known as flood control doors or protective doors, are commonly used at the entrances and exits of underground buildings or in civil air defense projects to enhance security and containment. Existing civil air defense doors are typically made of metal, often weighing over three tons, making them difficult to transport. When used for flood control, they can sometimes rust and become difficult to activate.

[0003] Additionally, most existing flood-proof door locking systems utilize an electric drive, which can sometimes cause power failures and affect the door's proper activation. Furthermore, existing flood-proof door locking systems utilize a central rotating wheel as a driving source to simultaneously lock both the upper and lower latches. This rotating wheel drives multiple commutators, which in turn drive a worm gear mechanism to achieve synchronous locking of the upper and lower latches. However, in practice, this commutator and worm gear drive requires extensive calculation of speed ratios during design. Because the drive is staged, this can lead to low drive response efficiency, long drive times, and unstable circuit control. Summary of the Invention

[0004] In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide a lightweight fixed threshold flood-proof protective closed door, the door leaf is lightweight in design, and the locking structure of the door leaf can achieve reliable driving and fast response efficiency.

[0005] The purpose of the present invention is achieved through the following technical solutions:

[0006] A lightweight fixed threshold flood-proof protective closed door, comprising a door frame, two door leaves and two sets of linked locking components; the two door leaves are hinged to the left and right sides of the door frame through hinges, and the door leaves adopt an aluminum honeycomb sandwich structure; the two sets of linked locking components are respectively arranged on the sides of the two door leaves; the linked locking components include an active turntable, an upper linkage rod, a lower linkage rod, an upper latch and a lower latch; the main body of the upper latch is hinged to an upper chassis, and the upper chassis is connected to the door leaf; the main body of the lower latch is hinged to a lower chassis, and the lower chassis is connected to the door leaf; the active turntable is hinged There is a main chassis, which is connected to the door leaf; the active turntable is located between the upper latch and the lower latch; one end of the upper linkage rod is hinged to the main body of the upper latch, and the other end of the upper linkage rod is hinged to the active turntable; one end of the lower linkage rod is hinged to the active turntable, and the other end of the lower linkage rod is hinged to the main body of the lower latch; the upper linkage rod and the lower linkage rod are both located on the same side of the active turntable and tend to be on the same straight line; when the active turntable rotates an angle, the upper latch and the lower latch rotate synchronously to rotate out the upper and lower frames of the door leaf respectively.

[0007] Furthermore, the upper linkage rod and the lower linkage rod are both elastic rods made of plastic material; when the active turntable rotates, the ends of the upper linkage rod and the lower linkage rod can generate bending deformation to adapt to the lateral amplitude difference when the active turntable, the main body of the upper latch and the main body of the lower latch rotate, without affecting the upper linkage rod and the lower linkage to simultaneously drive or push the main body of the upper latch and the main body of the lower latch to rotate clockwise or counterclockwise synchronously.

[0008] Furthermore, the rotation range of the active turntable is 70 degrees, the hinge point between the upper linkage rod and the active turntable and the hinge point between the lower linkage rod and the active turntable are at the same position, and when the active turntable rotates downward to the extreme position, the angle between the hinge point between the upper linkage rod and the active turntable and the horizontal direction is 35 degrees; the angle between the hinge point between the upper linkage rod and the upper pin and the end of the upper pin is 125 degrees; the angle between the hinge point between the lower linkage rod and the lower pin and the end of the lower pin is 55 degrees.

[0009] Furthermore, a movable handle is installed on the disk lock of the active turntable, an interlocking rod is provided on the outer peripheral surface of the active turntable, the end of the interlocking rod is hinged with an interlocking block, and an interlocking groove is provided on the side of the other door leaf; when the movable handle drives the active turntable to rotate to the extreme position, the end of the movable handle faces downward, and the active turntable drives or pushes the upper pin and the lower pin to rotate out of the upper frame and the lower frame of the door leaf respectively through the upper linkage rod and the lower linkage rod to achieve locking, and at the same time, the interlocking rod rotates synchronously, and the interlocking block slides and fits in the interlocking groove to achieve locking.

[0010] Furthermore, the number of the upper latches is three, and the three upper latches are arranged at intervals in the horizontal direction. The same upper connecting rod is hinged between adjacent upper chassis, and the hinge points between the main bodies of the three upper latches and the upper connecting rod are all at the same position in the main body of the upper latch, and the three upper latches are in the same direction; the number of the lower latches is six, and the six lower latches are arranged at intervals in the horizontal direction. The same lower connecting rod is hinged between adjacent lower chassis, and the hinge points between the main bodies of the six lower latches and the lower connecting rod are at the same position in the main body of the lower latch, and the six lower latches are in the same direction.

[0011] Furthermore, the opposite edges of the two door leaves are respectively provided with a first sealing plate and a second sealing plate. When the door leaves are closed, the opposite side shapes of the first sealing plate and the second sealing plate are centrally symmetrical. The side of the first sealing plate is provided with a plurality of first trapezoidal grooves, and the side of the second sealing plate is provided with a plurality of second trapezoidal grooves. The plurality of second trapezoidal grooves correspond to the plurality of first trapezoidal grooves. A supporting plate is provided in the first trapezoidal groove, and an installation groove is formed between the supporting plate and the inner side wall of the first trapezoidal groove. A butt joint sealing strip is provided in the installation groove, and a clamping plate is provided on the end face of the butt joint sealing strip away from the first trapezoidal groove, and the clamping plate has a clamping groove; an extrusion strip is provided in the second trapezoidal groove; when the two door leaves are closed, the extrusion strip cooperates with the clamping groove, and the extrusion strip squeezes the butt joint sealing strip to achieve sealing of the door gap when the door leaves are closed.

[0012] Furthermore, the left and right sides of the door frame are both provided with matching plates, the side of the matching plate away from the door frame is provided with a first step groove, the side of the matching plate is provided with a convex strip, and the convex strip is correspondingly arranged at the groove edge of the first step groove; the lateral edge of the door leaf close to the door frame is provided with an adapter plate, the side of the adapter plate is provided with a second step groove, the side of the adapter plate is provided with an insert strip, and the insert strip is correspondingly arranged at the groove edge of the second step groove; door side frame sealing strips are both provided in the first step groove and the second step groove.

[0013] Furthermore, a strip groove is provided on the bottom side of the door frame, and a door bottom frame sealing strip is provided in the strip groove; when the door leaf is closed, the door leaf squeezes the door bottom frame sealing strip.

[0014] Furthermore, the door leaf includes two panels and a field-shaped frame welded between the two panels. The field-shaped frame has four square grooves, and large lattice honeycomb panels are arranged in the square grooves. Both side surfaces of the field-shaped frame are covered with skin, and the skin is composited with the panels.

[0015] Furthermore, the large lattice honeycomb panel adopts a honeycomb panel with a constant cross-section, and the honeycomb interlayer and panel are both made of 6061 aluminum.

[0016] The present invention has the following beneficial effects:

[0017] 1. The present invention adopts a stable linkage mode of the linkage locking assembly. By rotating the driving source, the upper latch and the lower latch can be synchronously driven to rotate in the same direction, so that the upper latch and the lower latch can respectively rotate out the upper frame and the lower frame of the door leaf at the same time; compared with the prior art structure using a commutator and a worm gear, the structure of the present invention responds more quickly and efficiently, and has the advantages of stable operation, simple operation and high efficiency. It can ensure that the door body is opened and closed quickly and accurately under different water pressures and harsh environments, thereby improving the reliability and safety of the protective door.

[0018] 2. The door leaf of the present invention adopts an aluminum honeycomb sandwich structure, which is light and high-strength. Compared with traditional door materials, it can effectively reduce the weight of the door body and reduce the requirements for the installation foundation. At the same time, it improves the impact and pressure resistance of the door body and extends the service life of the door body.

[0019] 3. The multi-sealing structure design of the present invention ensures the sealing effect of the door from the bottom to the periphery of the door body, effectively preventing the intrusion of water and air, and meeting the strict requirements of flood prevention and protective sealing. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 Schematic diagram of the structure of the linkage locking assembly of the present invention.

[0022] Figure 3 for Figure 1 Cross-sectional view in the AA direction.

[0023] Figure 4 for Figure 1 Cross-sectional view along the BB direction.

[0024] Figure 5 for Figure 4 A partial cross-sectional view of the .

[0025] Figure 6 The figure is a schematic diagram of the installation structure of the door bottom frame sealing strip of the present invention.

[0026] Figure 7 It is a structural schematic diagram of the field-shaped frame of the present invention.

[0027] Figure 8 It is a structural schematic diagram of the large lattice honeycomb panel of the present invention.

[0028] In the figure: 1. Door frame; 11. Matching plate; 12. First step groove; 13. Raised strip; 14. Door side frame sealing strip; 15. Strip groove; 16. Door bottom frame sealing strip; 2. Door leaf; 20. Horizontal raised strip; 21. First sealing plate; 211. First trapezoidal groove; 212. Support plate; 22. Second sealing plate; 221. Second trapezoidal groove; 222. Extrusion strip; 23. Clamping plate; 231. Clamping groove; 24. Adapter plate; 241. Second step groove; 242. Insert strip; 25. Butt joint Sealing strip; 26. Interlocking groove; 27. Limit screw; 28. Honeycomb interlayer; 281. Field-shaped frame; 282. Square groove; 283. Large lattice honeycomb panel; 3. Linkage locking assembly; 31. Active turntable; 311. Interlocking rod; 312. Interlocking block; 32. Main chassis; 33. Upper linkage rod; 34. Lower linkage rod; 35. Movable handle; 36. Upper latch; 361. Upper chassis; 362. Upper connecting rod; 37. Lower latch; 371. Lower chassis; 372. Lower connecting rod. DETAILED DESCRIPTION

[0029] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Terms such as "upper," "inner," "middle," "left," "right," and "one" used in this specification are for ease of description and are not intended to limit the scope of the present invention. Changes or adjustments to these terms, without substantially altering the technical content, are also considered within the scope of the present invention.

[0030] In response to the shortcomings of existing threshold-free flood-proof doors in terms of driving mode, reliability, structural strength, and flood-proof effect, the present invention designs a lightweight fixed-threshold flood-proof protective closed door, aiming to achieve the following functions:

[0031] Drive reliability of the interlocking locking component 3: The interlocking locking component 3 is used to synchronously drive the upper latch 36 and the lower latch 37 to rotate simultaneously, so that the upper latch 36 and the lower latch 37 are simultaneously rotated out of the door leaf 2 to realize the door locking function. It has the advantages of stable output operation and fast response speed. It can ensure that the door body can be opened and closed quickly and accurately under different water pressures and harsh environments, thereby improving the reliability and safety of the protective door.

[0032] Advantages of the aluminum honeycomb sandwich 28 structure: The door leaf 2 adopts a honeycomb sandwich 28 structure with large lattice honeycomb panels 283 and is made of 6061 aluminum. This non-solid honeycomb panel sandwich structure and corresponding materials can greatly reduce the weight of the door leaf 2, while improving the impact and pressure resistance of the door leaf 2 (compressive strength 8.5MPa, tensile strength 180MPa, yield strength 140MPa, elastic modulus 68.9GPa, Poisson's ratio 0.33), thereby extending the service life of the door leaf 2.

[0033] Good sealing performance: The design of multi-sealing structure ensures the sealing effect of the door from the bottom to the sides of the door body, effectively preventing the intrusion of water and air, and meeting the strict requirements of flood prevention and protective sealing.

[0034] The following is a detailed introduction to the structure and working principle of the lightweight fixed threshold anti-flooding protective closed door of the present invention:

[0035] A lightweight fixed threshold anti-flooding protective closed door, such as Figures 1 to 8 As shown, it includes a door frame 1, two door leaves 2, two sets of linked locking components 3, and a seal.

[0036] Regarding the installation method of door leaf 2, Figures 1 to 3 As shown:

[0037] The two door leaves 2 are hinged to the left and right sides of the door frame 1 through hinges. The hinges can adopt multiple sets of rotating supports and connecting seats. The rotating supports are installed on the door frame 1 by screws, and the connecting seats are installed on the sides of the door leaves 2 by screws. The connecting seats are rotatably connected to the rotating supports.

[0038] The core of the present invention is to use a manual interlocking locking assembly 3 to synchronously drive or push all upper latches 36 and lower latches 37 to rotate, thereby achieving the function of simultaneously rotating all upper latches 36 and lower latches 37 out of the door leaf 2, thereby locking the door leaf 2 from top to bottom. Conversely, the state of locking the door leaf 2 from top to bottom can be released simultaneously. Compared with the electric drive method used in the prior art, the manual drive method can reduce the problem of electric drive failure due to power outages in harsh environments, while also ensuring the effectiveness of the drive.

[0039] The structure of the linkage locking assembly 3 is introduced below:

[0040] like Figures 1 to 3 As shown, regarding the installation structure of the two groups of linkage locking components 3, the two groups of linkage locking components 3 are respectively arranged on the sides of the two door leaves 2, and the two groups of linkage locking components 3 are installed in a symmetrical manner.

[0041] The following mainly introduces the installation structure of the linkage locking component 3 on the left side. Figure 4 and Figure 5 As shown:

[0042] The interlocking locking assembly 3 includes an active turntable 31, an upper interlocking rod 33, a lower interlocking rod 34, an upper latch 36 and a lower latch 37; the main body of the upper latch 36 is hinged with an upper chassis 361, and the upper chassis 361 is installed on the top of the door leaf 2 by screws. There are three upper latches 36, and each is equipped with a corresponding upper chassis 361. The three upper latches 36 are arranged at equal intervals in the horizontal direction, and the main bodies of adjacent upper latches 36 are hinged with the same upper connecting rod 362. The hinge points between the main bodies of all upper latches 36 and the upper connecting rod 362 are at the same position in the main body of the upper latch 36, and the upper connecting rod 362 extends in the horizontal direction, and each upper latch 36 has the same direction. Therefore, when the main body of one upper latch 36 rotates, the upper connecting rod 362 will synchronously drive or push the main bodies of all upper latches 36 to rotate synchronously and in the same direction, thereby realizing that all upper latches 36 rotate synchronously in the same direction, and then synchronously drive all upper latches 36 to rotate out of the door leaf 2 to achieve the function of locking the door leaf 2, and vice versa, release the locked state of the door leaf 2.

[0043] The body of the lower latch 37 is hingedly connected to a lower chassis 371, which is screwed to the bottom of the door leaf 2. There are six lower latches 37, each equipped with a corresponding lower chassis 371. The six lower latches 37 are evenly spaced horizontally. The bodies of adjacent lower latches 37 are hingedly connected to the same lower connecting rod 372. The hinge points between the bodies of all lower latches 37 and the lower connecting rod 372 are located at the same position within the body of the lower latch 37. The lower connecting rod 372 extends horizontally, and each lower latch 37 is oriented in the same direction. Therefore, when the body of one lower latch 37 rotates, the lower connecting rod 372 simultaneously drives or pushes the bodies of all lower latches 37 to rotate synchronously and in the same direction, thereby causing all lower latches 37 to rotate synchronously in the same direction, thereby synchronously driving all lower latches 37 to rotate and extend out of the door leaf 2 to lock the door leaf 2. Otherwise, the door leaf 2 is unlocked.

[0044] like Figures 1 to 3 As shown, the two upper latches 36 at the two ends of the three upper latches 36 in the horizontal direction are aligned in the vertical direction with the two lower latches 37 at the two ends of the six lower latches 37 in the horizontal direction, and the interlocking locking assembly 3 is located between the upper latches 36 and the lower latches 37 at the two ends of the right side.

[0045] The driving turntable 31 is hingedly connected to the main chassis 32, which is screwed to the side of the door leaf 2. One end of an upper linkage rod 33 is hingedly connected to the body of the upper latch 36 at the far right end, and the other end of the upper linkage rod 33 is hingedly connected to the driving turntable 31. One end of a lower linkage rod 34 is hingedly connected to the driving turntable 31, and the other end of the lower linkage rod 34 is hingedly connected to the body of the lower latch 37. The upper linkage rod 33 and the lower linkage rod 34 are both on the same side of the driving turntable 31 and are aligned. When the active turntable 31 rotates a certain angle, the upper linkage rod 33 applies a downward pulling force in the clockwise direction to the outer periphery of the main body of the upper latch 36, and conversely, the lower linkage rod 34 applies a downward pushing force in the clockwise direction to the outer periphery of the main body of the lower latch 37, thereby driving the main body of the upper latch 36 and the main body of the lower latch 37 to move synchronously in the clockwise direction, and then synchronously driving the upper latch 36 and the lower latch 37 to rotate outward toward the upper and lower frames of the door leaf 2, respectively, thereby realizing the upper and lower locking of the door leaf 2; and when the active turntable 31 rotates in the opposite direction, it drives the upper latch 36 and the lower latch 37 to simultaneously release the locked state of the door leaf 2.

[0046] In order to further improve the feasibility of the upper linkage rod 33 and the lower linkage rod 34 driving the upper latch 36 and the lower latch 37 to rotate synchronously, the material and installation details of the upper linkage rod 33 and the lower linkage rod 34 are further described in detail below. Figures 1 to 3 As shown:

[0047] The upper linkage rod 33 and the lower linkage rod 34 are both elastic rods made of plastic material. The main purpose of using this material is to adapt to the lateral amplitude difference when the active turntable 31 rotates, and the two ends of the upper linkage rod 33 and the lower linkage rod 34 can adapt to the rotation of the active turntable 31, the main body of the upper latch 36, and the main body of the lower latch 37. The upper linkage rod 33 and the lower linkage rod 34 can adaptively bend and deform due to their material characteristics to overcome the problem of movement jamming, but it does not affect the function of the upper linkage rod 33 and the lower linkage to simultaneously drive or push the main body of the upper latch 36 and the main body of the lower latch 37 to rotate clockwise or counterclockwise synchronously.

[0048] The rotation range of the active turntable 31 of the present invention is 70 degrees. Therefore, when the active turntable 31 is rotated 70 degrees counterclockwise downward, the upper linkage rod 33 and the lower linkage rod 34 can be used to apply downward pulling force and downward pushing to the main body of the upper latch 36 and the main body of the lower latch 37 respectively, so as to drive or push the main body of the upper latch 36 and the main body of the lower latch 37 to rotate 70 degrees clockwise synchronously, thereby realizing that the upper latch 36 and the lower latch 37 are respectively rotated out of the upper door frame 1 and the lower door frame 1 for locking; and when the active turntable 31 is rotated 70 degrees clockwise upward, the state of the upper latch 36 and the lower latch 37 locking the door leaf 2 is realized.

[0049] Based on the above definition of the working state, the following further defines the connection points between the upper linkage rod 33 and the upper latch 36 body and the active turntable 31, and the lower linkage rod and the active turntable 31 and the lower latch 37 body.

[0050] Specifically: Figure 1 、 Figure 4 、 Figure 5 As shown, the angle between the hinge point between the upper linkage rod 33 and the upper latch 36 and the end of the upper latch 36 (this angle is mainly with respect to the hinge point between the main body of the upper latch 36 and the upper chassis 361) is 125 degrees; the angle between the hinge point between the upper linkage rod 33 and the upper latch 36 and the hinge point between the upper connecting rod 362 and the main body of the upper latch 36 (this angle is mainly with respect to the hinge point between the main body of the upper latch 36 and the upper chassis 361) is 90 degrees.

[0051] The hinge point between the upper linkage rod 33 and the active turntable 31 and the hinge point between the lower linkage rod 34 and the active turntable 31 are at the same position; and when the hinge point between the upper linkage rod 33 and the active turntable 31 is rotated downward to the extreme position, the angle between the hinge point and the horizontal direction (the angle is mainly with respect to the hinge point between the active turntable 31 and the main chassis 32) is 35 degrees; similarly, when the hinge point between the upper linkage rod 33 and the active turntable 31 is rotated upward to the extreme position, the angle between the hinge point and the horizontal direction (the angle is mainly with respect to the hinge point between the active turntable 31 and the main chassis 32) is 35 degrees.

[0052] The angle between the hinge point between the lower linkage rod 34 and the lower latch 37 and the end of the lower latch 37 (this angle is mainly with respect to the hinge point between the main body of the lower latch 37 and the lower chassis 371) is 55 degrees; the angle between the hinge point between the lower linkage rod 34 and the lower latch 37 and the hinge point between the lower connecting rod 372 and the main body of the lower latch 37 (this angle is mainly with respect to the hinge point between the main body of the lower latch 37 and the lower chassis 371) is 90 degrees.

[0053] It should be noted that the above-mentioned hinged installation methods in the active turntable 31, main chassis 32, upper linkage rod 33, upper latch 36, upper chassis 361, upper connecting rod 362, lower linkage rod 34, lower latch 37, lower chassis 371, and lower connecting rod 372 are all realized by using existing hinges or hinge shafts, and the specific angle range can be selected or purchased as needed.

[0054] The active turntable 31 is locked with a movable handle 35, so that the user can rotate the active turntable 31 through the movable handle 35. In order to facilitate the user to distinguish the current locked state of the door lock, the movable handle 35 can also be set in the middle of the rotation range of the active turntable 31. Therefore, when the movable handle 35 is set downward, it represents that the current door leaf 2 is in a locked state, and vice versa, it represents that the door leaf 2 is in an unlocked state. At the same time, when the movable handle 35 is in the downward position, it can also apply downward rotation pressure to the movable turntable, thereby reducing the possibility of the active turntable 31 reversing and releasing the locked state of the door leaf 2, thereby achieving the advantage of improving the locking stability of the door leaf 2.

[0055] In this embodiment, the outer peripheral surface of the active turntable 31 is fixedly connected to an interlocking rod 311, the end of the interlocking rod 311 is hinged with an interlocking block 312, and an interlocking groove 26 is provided on the side of the other door leaf 2, and a limiting screw 27 is provided at the top of the interlocking groove 26. When the lock member 31 is unlocked, the unlocking mechanism 312 can be unlocked by pressing the lock member 311 together with the lock member 312, thereby unlocking the unlocked member 310. When the lock member 31 is unlocked, the unlocking mechanism 312 can be unlocked by pressing the lock member 311 together with the lock member 312.

[0056] Regarding the sealing member, when the door leaf 2 is in a closed state, the gap between the door leaf 2 and the side and bottom edges of the door frame 1, and the gap between the two door leaves 2 are sealed and waterproofed. Figures 4 to 6 As shown:

[0057] The sealing components include a butt joint sealing strip 25, a door bottom frame sealing strip 16, and a door side frame sealing strip 14; the butt joint sealing strip 25 is used to seal and waterproof the gap between the two door leaves 2 when the two door leaves 2 are closed; the door bottom frame sealing strip 16 is used to seal and waterproof the gap between the door leaf 2 and the bottom of the door frame 1; the door side frame sealing strip 14 is used to seal and waterproof the gap between the door leaf 2 and the side of the door frame 1.

[0058] Regarding the installation structure of the joint sealing strip 25: Figure 4 and Figure 5As shown, the opposite edges of the two door leaves 2 are respectively provided with a first sealing plate 21 and a second sealing plate 22. When the door leaves 2 are closed, the opposite side shapes of the first sealing plate 21 and the second sealing plate 22 are centrally symmetrical. The side of the first sealing plate 21 is provided with a plurality of first trapezoidal grooves 211 by a bending process technology. The number of the first trapezoidal grooves 211 in this embodiment is two. The side of the second sealing plate 22 is provided with a plurality of second trapezoidal grooves 221 by a bending process technology. The number of the second trapezoidal grooves 221 in this embodiment is two, and the plurality of second trapezoidal grooves 221 correspond to the plurality of first trapezoidal grooves 211. A support plate 212 is fixedly provided in the first trapezoidal groove 211. An installation groove is formed between the support plate 212 and the inner side wall of the first trapezoidal groove 211. A butt joint sealing strip 25 is fixedly provided in the installation groove. A clamping plate 23 is glued and fixed to the end face of the butt joint sealing strip 25 away from the first trapezoidal groove 211. The clamping plate 23 has a clamping groove 231. The card slot 231 extends in the vertical direction; an extrusion strip 222 is provided in the second trapezoidal groove 221, and the extrusion strip 222 extends in the vertical direction; when the two door leaves 2 are closed, the extrusion strip 222 cooperates with the card slot 231, and the extrusion strip 222 squeezes the joint sealing strip 25 to achieve sealing of the gap between the two door leaves 2 when the door leaves 2 are closed, thereby achieving a waterproof and flood-proof effect.

[0059] Regarding the installation structure of the door side frame sealing strip 14: Figure 4 and Figure 5 As shown, the left and right sides of the door frame 1 are each provided with a mating plate 11. A first stepped groove 12 is defined on the side of the mating plate 11 facing away from the door frame 1. A ridge 13 is provided on the side of the mating plate 11, which is integrally formed with the grooved edge of the first stepped groove 12. The door leaf 2 is fixedly connected to the lateral edge of the door frame 1 with an adapter plate 24. A second stepped groove 241 is defined on the side of the adapter plate 24, and an insert 242 is provided on the side of the adapter plate 24, which is integrally formed with the grooved edge of the second stepped groove 241. The door jamb sealing strip 14 is fixedly secured within the first stepped groove 12 and the second stepped groove 241. When the door leaf 2 is closed, the first step groove 12 and the second step groove 241 are centrally symmetrical, and the convex strip 13 is embedded in the door side frame sealing strip 14 in the second step groove 241, and the inserted strip 242 is similarly embedded in the door side frame sealing strip 14 in the first step groove 12, so that the first step groove 12 and the second step groove 241 are engaged with each other through the convex strip 13 and the inserted strip 242, and can effectively squeeze the door side frame sealing strip 14, thereby improving the sealing of the door gap between the side of the door leaf 2 and the side of the door frame 1 when the door leaf 2 is closed, thereby achieving a waterproof and flood-proof effect.

[0060] About the installation structure of the door bottom frame sealing strip 16: Figure 6As shown, the bottom side of the door frame 1 is provided with a strip groove 15, which extends horizontally. A door bottom frame sealing strip 16 is disposed within the strip groove 15. The door leaf 2 has a transverse ridge 20 protruding from the side facing the strip groove 15. When the door leaf 2 is closed, the transverse ridge 20 engages with the strip groove 15 and squeezes the door bottom frame sealing strip 16, thereby improving the seal between the bottom of the door leaf 2 and the door frame 1, thereby achieving a waterproof and flood-proof effect.

[0061] Regarding the structure of the lightweight design of door leaf 2: Figure 7 and Figure 8 As shown, the door leaf 2 includes two panels (not shown), and a honeycomb interlayer 28 welded between the two panels; the honeycomb interlayer 28 includes a field-shaped frame 281 and four large lattice honeycomb panels 283. The field-shaped frame 281 is formed by welding I-shaped steel or channel steel. The field-shaped frame 281 has four square grooves 282, and the four large lattice honeycomb panels 283 are respectively arranged in the four square grooves 282. Both sides of the field-shaped frame 281 are covered with skin, and the door panel is compositely connected to the skin, and the door panel is welded to the threshold-less door frame 1 and the field-shaped frame 281 to improve the firmness of the overall structure of the door leaf 2 and achieve the effect of lightweight design.

[0062] The large lattice honeycomb panel 283 utilizes a honeycomb panel with a constant cross-section. Its interface is composed of several regular hexagonal honeycomb cells with a side length of 25 mm. The wall thickness of each regular hexagonal honeycomb cell is 1.5 mm. The thickness of the large lattice honeycomb panel 283 is 114 mm, the panel thickness is 3 mm, and the total thickness of the door leaf 2 is 120 mm. Both the honeycomb interlayer 28 and the panel are made of 6061 aluminum. By defining the structure, material, shape, and dimensions of the large lattice honeycomb panel 283, the present invention significantly improves the performance of the door leaf 2 made of the large lattice honeycomb panel 283 compared to existing conventional honeycomb panel structures: a compressive strength of 8.5 MPa, a tensile strength of 180 MPa, a yield strength of 140 MPa, an elastic modulus of 68.9 GPa, and a Poisson's ratio of 0.33.

[0063] The embodiments of the present invention are not limited to these. According to the above contents of the present invention, by utilizing common technical knowledge and customary means in this field, without departing from the above basic technical ideas of the present invention, the present invention can also make other various forms of modification, replacement or combination, all of which fall within the scope of protection of the present invention.

Claims

1. A lightweight fixed threshold anti-flooding protective closed door, characterized in that: The door frame comprises two door leaves and two groups of linkage locking components; the two door leaves are hinged to the left and right sides of the door frame through hinges, and the door leaves adopt an aluminum honeycomb sandwich structure; the two groups of linkage locking components are respectively arranged on the sides of the two door leaves; the linkage locking component comprises an active turntable, an upper linkage rod, a lower linkage rod, an upper latch and a lower latch; the main body of the upper latch is hinged to an upper chassis, and the upper chassis is connected to the door leaf; the main body of the lower latch is hinged to a lower chassis, and the lower chassis is connected to the door leaf; the active turntable is hinged to a main chassis, and the main The chassis is connected to the door leaf; the active turntable is located between the upper latch and the lower latch; one end of the upper linkage rod is hinged to the main body of the upper latch, and the other end of the upper linkage rod is hinged to the active turntable; one end of the lower linkage rod is hinged to the active turntable, and the other end of the lower linkage rod is hinged to the main body of the lower latch; the upper linkage rod and the lower linkage rod are both located on the same side of the active turntable and on the same straight line; when the active turntable rotates an angle, the upper latch and the lower latch rotate synchronously to rotate out the upper and lower frames of the door leaf respectively.

2. The lightweight fixed threshold anti-flooding protective closed door according to claim 1, characterized in that: The upper linkage rod and the lower linkage rod are both elastic rods made of plastic material. When the active turntable rotates, the ends of the upper linkage rod and the lower linkage rod can generate bending deformation to adapt to the lateral amplitude difference when the active turntable, the main body of the upper latch and the main body of the lower latch rotate, without affecting the upper linkage rod and the lower linkage rod simultaneously driving or pushing the main body of the upper latch and the main body of the lower latch to rotate clockwise or counterclockwise synchronously.

3. The lightweight fixed threshold flood-proof protective closed door according to claim 1, characterized in that: The rotation range of the active turntable is 70 degrees, and the hinge point between the upper linkage rod and the active turntable and the hinge point between the lower linkage rod and the active turntable are at the same position. When the active turntable rotates downward to the extreme position, the angle between the hinge point between the upper linkage rod and the active turntable and the horizontal direction is 35 degrees; the angle between the hinge point between the upper linkage rod and the upper latch and the end of the upper latch is 125 degrees; the angle between the hinge point between the lower linkage rod and the lower latch and the end of the lower latch is 55 degrees.

4. The lightweight fixed threshold flood-proof protective closed door according to claim 1, characterized in that: The disk lock of the active turntable is attached with a movable handle, the outer peripheral surface of the active turntable is provided with an interlocking rod, the end of the interlocking rod is hinged with an interlocking block, and the side of the other door leaf is provided with an interlocking groove; when the movable handle drives the active turntable to rotate to the extreme position, the end of the movable handle faces downward, and the active turntable drives or pushes the upper latch and the lower latch to rotate out of the upper frame and the lower frame of the door leaf respectively through the upper linkage rod and the lower linkage rod to achieve locking, and at the same time, the interlocking rod rotates synchronously, and the interlocking block slides and fits in the interlocking groove to achieve locking.

5. The lightweight fixed threshold anti-flooding protective closed door according to claim 1, characterized in that: There are three upper latches, which are arranged at intervals in the horizontal direction, and the same upper connecting rod is hinged between adjacent upper chassis. The hinge points between the main bodies of the three upper latches and the upper connecting rod are all at the same position in the main body of the upper latch, and the three upper latches are in the same direction; there are six lower latches, which are arranged at intervals in the horizontal direction, and the same lower connecting rod is hinged between adjacent lower chassis. The hinge points between the main bodies of the six lower latches and the lower connecting rod are at the same position in the main body of the lower latch, and the six lower latches are in the same direction.

6. The lightweight fixed threshold anti-flooding protective closed door according to claim 1, characterized in that: The opposite edges of the two door leaves are respectively provided with a first sealing plate and a second sealing plate. When the door leaves are closed, the opposite side shapes of the first sealing plate and the second sealing plate are centrally symmetrical. The side of the first sealing plate is provided with a plurality of first trapezoidal grooves, and the side of the second sealing plate is provided with a plurality of second trapezoidal grooves. The plurality of second trapezoidal grooves correspond to the plurality of first trapezoidal grooves. A supporting plate is provided in the first trapezoidal groove, and an installation groove is formed between the supporting plate and the inner side wall of the first trapezoidal groove. A butt joint sealing strip is provided in the installation groove, and a clamping plate is provided on the end face of the butt joint sealing strip away from the first trapezoidal groove, and the clamping plate has a clamping groove; an extrusion strip is provided in the second trapezoidal groove; when the two door leaves are closed, the extrusion strip cooperates with the clamping groove, and the extrusion strip squeezes the butt joint sealing strip to achieve sealing of the door gap when the door leaves are closed.

7. The lightweight fixed threshold anti-flooding protective closed door according to claim 1, characterized in that: The left and right sides of the door frame are both provided with matching plates, and the side of the matching plate away from the door frame is provided with a first step groove, and the side of the matching plate is provided with a convex strip, and the convex strip is correspondingly arranged at the groove edge of the first step groove; the lateral edge of the door leaf close to the door frame is provided with an adapter plate, and the side of the adapter plate is provided with a second step groove, and the side of the adapter plate is provided with an insert strip, and the insert strip is correspondingly arranged at the groove edge of the second step groove; door side frame sealing strips are both provided in the first step groove and the second step groove.

8. The lightweight fixed threshold flood-proof protective closed door according to claim 1, characterized in that: A strip groove is provided on the bottom side of the door frame, and a door bottom frame sealing strip is provided in the strip groove; when the door leaf is closed, the door leaf presses the door bottom frame sealing strip.

9. The lightweight fixed threshold flood-proof protective closed door according to claim 1, characterized in that: The door leaf includes two panels and a field-shaped frame welded between the two panels. The field-shaped frame has four square grooves. Large lattice honeycomb panels are arranged in the square grooves. Both side surfaces of the field-shaped frame are covered with skin, and the skin is composited with the panels.

10. The lightweight fixed threshold flood-proof protective closed door according to claim 9, characterized in that: The large lattice honeycomb panel adopts a honeycomb panel with a constant cross-section, and the honeycomb interlayer and panel are both made of 6061 aluminum material.

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