A lightweight, threshold-free, flood-proof, and airtight door

Abstract

The present invention discloses a lightweight, threshold-free, flood-proof, and airtight door, comprising a threshold-free door frame, two door leaves, and a seal; a sealing plate is provided at the bottom of the threshold-free door frame, and the sealing plate is provided with an insertion hole; the two door leaves are hinged on both sides of the threshold-free door frame, and the door leaves include two panels and a honeycomb interlayer welded between the two panels; the seal includes a movable sealing strip, a butt sealing strip, and a door frame sealing strip; the movable sealing strip is connected to a lower latch, and when the lower latch is inserted downward into the insertion hole, the movable sealing strip seals the gap between the bottom of the door leaf and the sealing plate; the two butt sealing strips are respectively provided between the two door leaves; the door frame sealing strip is provided between the side of the door leaf and the inner side of the threshold-free door frame; when the two door leaves are closed, the two butt sealing strips press against each other, and the door leaves press against the inner side of the threshold-free door frame through the door frame sealing strip. Through the above arrangement, a threshold-free design that is convenient for passage can be achieved, and high strength, good flood-proof and protective sealing performance can be achieved.

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, threshold-free, flood-proof and airtight door. Background Art

[0002] Floodproof doors or protective doors are usually required at entrances and exits of underground buildings, civil air defense projects, and other places that require flood prevention, protection, and sealing. Traditional floodproof doors or protective doors often cause inconvenience to daily traffic and pedestrian traffic due to the door frame. Threshold-less floodproof doors or protective doors, due to the threshold-less design, have a large gap between the door leaf and the bottom of the door frame, which can easily lead to seal failure when faced with high water pressure. This is mainly due to the uneven pressure distribution between the sealing system and the contact surface, resulting in a leakage rate of up to 1.2L / min·m after long-term use. Existing floodproof doors or protective doors are usually made of solid metal materials, which are relatively heavy, usually weighing more than 3 tons, and are difficult to transport. During use, there is a risk of rusting and affecting startup.

[0003] Therefore, there is still room for improvement in the flood prevention effect and structural strength of existing flood prevention doors and protective doors. 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 threshold-less flood-proof protective closed door, which can not only realize a threshold-less design for convenient passage, but also has high strength, good flood-proof and protective sealing performance.

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

[0006] A lightweight, threshold-free, flood-proof, airtight door comprises a threshold-free door frame, two door leaves, and a seal; a sealing plate is provided at the bottom of the threshold-free door frame, the sealing plate is provided with a plug hole, and the sealing plate is provided with a plug plate inserted into the ground; the two door leaves are hinged to the left and right sides of the threshold-free door frame through hinges, the door leaves comprise two panels, and a honeycomb interlayer welded between the two panels; the door leaves are provided with an upper latch and a lower latch for locking, the lower latch corresponding to the plug hole; the seal comprises a movable sealing strip, a butt sealing strip, a door Frame sealing strip; the movable sealing strip is connected to the lower pin, and when the lower pin is inserted downward into the socket, the movable sealing strip seals the gap between the bottom of the door leaf and the sealing plate; the number of the docking sealing strips is two, and the two docking sealing strips are respectively arranged on the opposite sides of the two door leaves; the door frame sealing strip is arranged at a position between the side of the door leaf and the inner side of the door frame without a threshold; when the two door leaves are closed, the two docking sealing strips are pressed against each other, and the side of the door leaf is pressed against the inner side of the door frame without a threshold through the door frame sealing strip.

[0007] Furthermore, a accommodating groove is provided at the bottom of the side of the door leaf near the upper and lower telescopic components, and a strip frame is plugged into the accommodating groove, and the strip frame is connected to the lower latch, and the movable sealing strip is two arranged on the bottom and side of the strip frame, and the movable sealing strip located on the side is against the inner wall of the accommodating groove; when the upper and lower telescopic components drive the lower latch and the strip frame to move downward, the movable sealing strip located at the bottom is pressed against the sealing plate.

[0008] Furthermore, the strip frame is provided with a connecting plate, the connecting plate is provided with a strip hole, the lower pin is provided with a connecting hole, and the bolt passes through the strip hole and is threadedly connected to the connecting hole, so that the movable sealing strip on the side can be adjusted through the strip hole to press against the inner wall of the accommodating groove.

[0009] Furthermore, the opposite edges of the two door leaves are fixedly connected with docking sealing plates, and the opposite cross-sectional shapes of the two docking sealing plates are centrally symmetrical when the door leaves are closed. The side surfaces of the docking sealing plates are provided with a plurality of first step grooves and first convex strips, and the first convex strips are correspondingly provided at the groove-shaped edges of the first step grooves, and the docking sealing strips are filled in the first step grooves; when the two door leaves are closed, the first convex strips of the docking sealing plates are embedded in the first step grooves of the other docking sealing plates, and squeeze the docking sealing strips in the first step grooves, so that the first step grooves of the two docking sealing plates are engaged with each other through the first convex strips.

[0010] Furthermore, the left and right sides of the threshold-less door frame are both provided with a first matching sealing plate, the first matching sealing plate is provided with a second step groove on the side away from the threshold-less door frame, the side of the first matching sealing plate is provided with a second ridge, and the second ridge corresponds to the groove edge of the second step groove formed integrally; the door leaf is fixedly connected with a second matching sealing plate on the lateral edge close to the threshold-less door frame, the side of the second matching sealing plate is provided with a third step groove, the side of the second matching sealing plate is provided with a third ridge, and the third ridge corresponds to the groove edge of the third step groove formed integrally; the door frame sealing strip is filled and fixed in the second step groove and the third step groove; when the door leaf is closed, the second step groove and the third step groove are centrally symmetrical, the second ridge is embedded in the door frame sealing strip in the third step groove, and the third ridge is embedded in the door frame sealing strip in the second step groove, so that the second step groove and the third step groove are engaged with each other through the second ridge and the third ridge.

[0011] Furthermore, the honeycomb sandwich includes a field-shaped frame and four large lattice honeycomb panels. The field-shaped frame has four square grooves, and the four large lattice honeycomb panels are respectively arranged in the four square grooves. Both sides of the field-shaped frame are covered with skin, and the skin is composited with the panel.

[0012] Furthermore, the large lattice honeycomb panel adopts a honeycomb panel with a constant cross-section, the interface of the large lattice honeycomb panel is composed of a number of regular hexagonal honeycomb units with a side length of 25 mm, the wall thickness of the regular hexagonal honeycomb unit is 1.5 mm, the thickness of the large lattice honeycomb panel is 114 mm, the thickness of the panel is 3 mm, and the total thickness of the door leaf is 120 mm; the honeycomb interlayer and the panel are both made of 6061 aluminum.

[0013] Furthermore, it also includes two groups of upper and lower telescopic components, which are respectively arranged on the sides of the two door leaves; the upper and lower telescopic components include a rotating part, a driving rod, a commutator, and a shear jack structure; the rotating part is arranged on the door leaf, the driving rod is arranged in the vertical direction, the middle part of the driving rod is connected to the driving end of the rotating part, the commutator is arranged at both ends of the driving rod, the shear jack structure is distributed at both ends of the driving rod, the shear jack structure is connected to the horizontal driving end of the commutator, the upper and lower ejection ends of the shear jack structures are respectively facing the top and bottom of the door frame without a threshold, and the upper latch and the lower latch are respectively connected to the ejection ends of the upper and lower shear jack structures.

[0014] Furthermore, the rotating part includes a base, a driving motor, a driving gear, a driven gear, a worm wheel and a worm; the base is arranged on the door leaf, the driving motor is arranged on the base, the driving gear is connected to the rotating end of the driving motor, the driven gear is rotatably connected to the base, the driven gear is meshed with the driving gear, the worm and the driven gear rotate coaxially, the worm wheel is perpendicular to the worm, the worm wheel is rotatably connected to the base, the worm wheel is meshed with the worm, and the driving rod includes an upper screw and a lower screw with opposite thread rotation directions, and the upper screw and the lower screw are respectively connected to the two ends of the worm wheel through a coupling.

[0015] Furthermore, the shear jack structure includes a transverse screw, two sliders, two shear rods, and a lifting block; the transverse screw is connected to the transverse driving end of the commutator, the threads at both ends of the transverse screw have opposite rotation directions, the two sliders are respectively engaged with the threads at both ends of the transverse screw, the two ends of the two shear rods are respectively hinged to the two sliders, the ends of the two shear rods away from the sliders are hinged to the lifting block, and the upper pin and / or lower pin are connected to the lifting block.

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

[0017] 1. The present invention realizes a threshold-free structure by designing a movable sealing strip that can be lifted and lowered to replace the bottom of the threshold-free door frame, which greatly improves the convenience of passage for people and vehicles, avoids safety hazards such as tripping caused by the threshold, and also facilitates operations such as equipment transportation.

[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. Compared with traditional steel doors, it can reduce weight by 58% and reduce energy consumption by 42%.

[0019] 3. The design of the multi-sealing structure of the present invention: cooperates with the lifting function of the lower latch, and at the same time drives the movable sealing strip close to the door leaf to press against the sealing plate at the bottom, thereby achieving the sealing of the door bottom seam of the door leaf; through the bite sealing method, the door leaf joint and the door leaf and door frame joint are sealed when the door is closed; through active extrusion and bite methods, the problem of uneven pressure can be effectively overcome to meet the waterproof and flood-proof requirements of the closed door without threshold.

[0020] 4. The present invention adopts a rotating part to drive the driving rod to rotate synchronously, and then drives the upper and lower sets of shear jack structures to be pushed out or retracted and reset synchronously, so as to realize the synchronous extension or retraction of the upper and lower latches. Its driving system (such as rotating parts, driving rods, commutator, shear jack structure) has the advantages of large output torque, stable 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0022] Figure 2 It is a structural schematic diagram of the field-shaped frame of the present invention.

[0023] Figure 3 It is a schematic structural diagram of the large lattice honeycomb panel of the present invention.

[0024] Figure 4 It is a structural schematic diagram of the upper and lower telescopic components of the present invention.

[0025] Figure 5 for Figure 1 Cross-sectional view along the AA direction.

[0026] Figure 6 for Figure 5 A partial enlarged view of point B in the middle.

[0027] Figure 7 for Figure 1 Cross-sectional view in CC direction.

[0028] In the figure: 1. Door frame without threshold; 11. Sealing plate; 111. Insert plate; 12. First matching sealing plate; 121. Second step groove; 122. Second convex strip; 13. Door frame sealing strip; 14. Movable sealing strip; 15. Strip frame; 16. Connecting piece; 161. Strip hole; 17. Bolt; 2. Door leaf; 21. Butt sealing plate; 211. First step groove; 212. First convex strip; 22. Butt sealing strip; 23. Second matching sealing plate; 231. Third step groove; 232. Third convex strip; 24. Accommodating groove; 25. Honeycomb clip Layer; 251, field-shaped frame; 252, square groove; 253, large lattice honeycomb panel; 3, upper and lower telescopic components; 31, rotating part; 310, base; 311, driving motor; 312, driving gear; 313, driven gear; 314, worm gear; 32, driving rod; 321, upper screw; 322, lower screw; 33, commutator; 34, shear jack structure; 341, horizontal screw; 342, slider; 343, shear rod; 344, lifting block; 35, upper latch; 36, lower latch; 361, connecting hole. 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] The present invention addresses the shortcomings of existing threshold-less flood-proof doors in terms of structural strength, flood-proof effect, and reliability of the driving method. The present invention designs a lightweight threshold-less flood-proof protective closed door, aiming to achieve the following functions:

[0031] Threshold-less design: The bottom of the threshold-less door frame of the present invention is set as a sealing plate and is set on the ground through an insert plate to achieve soil retaining and threshold-less design, which greatly improves the convenience of passage for people and vehicles, avoids safety hazards such as tripping due to thresholds, and also facilitates operations such as equipment transportation.

[0032] Advantages of aluminum honeycomb sandwich structure: The door leaf 2 adopts a honeycomb sandwich structure of large lattice honeycomb panels 253 and is made of 6061 aluminum. This non-solid honeycomb sandwich 25 structure and the 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 is 8.5MPa, tensile strength is 180MPa, yield strength is 140MPa, elastic modulus is 68.9GPa, Poisson's ratio is 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] Driving reliability of the upper and lower telescopic components 3: the upper latch 35 is extended upward and the lower latch 36 is extended downward synchronously. Its driving system adopts a worm gear 314 and a shear jack structure 34, which has the advantages of large output torque, smooth operation, and fast response speed. It can ensure that the door body opens and closes quickly and accurately under different water pressures and harsh environments, thereby improving the reliability and safety of the protective door.

[0035] The following is a detailed introduction to the structure and working principle of the lightweight, threshold-free, flood-proof and sealed door of the present invention:

[0036] A lightweight, threshold-free, flood-proof, airtight door. Figures 1 to 7 As shown, it includes a door frame 1 without a threshold, two door leaves 2, two sets of upper and lower telescopic components 3, and a seal.

[0037] Regarding the structure of the thresholdless doorframe 1: A sealing plate 11 is installed on the bottom surface of the thresholdless doorframe 1. The side of the sealing plate 11, located near the inner side of the door leaf 2, is bent downward to form an inserting plate 111. This inserting plate 111 is inserted into the ground, allowing the sealing plate 11 to adhere to the ground, thus forming a thresholdless structure. The sealing plate 11 also has several holes for inserting latches (i.e., the lower latch 36 and upper latch 35 described later).

[0038] Regarding the structure of the lightweight design of the door leaf 2: the door leaf 2 includes two panels and a honeycomb interlayer 25 welded between the two panels; the honeycomb interlayer 25 includes a field-shaped frame 251 and four large lattice honeycomb panels 253. The field-shaped frame 251 is formed by welding I-shaped steel or channel steel. The field-shaped frame 251 has four square grooves 252, and the four large lattice honeycomb panels 253 are respectively arranged in the four square grooves 252. Both sides of the field-shaped frame 251 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 251 to improve the firmness of the overall structure of the door leaf 2 and achieve the effect of lightweight design.

[0039] The large lattice honeycomb panel 253 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 the regular hexagonal honeycomb cells is 1.5 mm. The thickness of the large lattice honeycomb panel 253 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 and the panel are made of 6061 aluminum. By defining the structure, materials, and shape and dimensions of the large lattice honeycomb panel 253, the present invention significantly improves the performance of the door leaf 2 made of the large lattice honeycomb panel 253 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.

[0040] Regarding the installation structure of the two sets of upper and lower telescopic components 3, as shown Figures 1 to 6 As shown:

[0041] The two sets of upper and lower telescopic assemblies 3 are respectively installed on the sides of the two door leaves 2, and the two sets of upper and lower telescopic assemblies 3 are symmetrically arranged. The upper and lower telescopic assemblies 3 include a rotating member 31, a driving rod 32, a commutator 33, a shear jack structure 34, an upper latch 35, and a lower latch 36. The rotating member 31 is installed on the door leaf 2, and the driving rod 32 is arranged in the vertical direction. The middle part of the driving rod 32 is connected to the driving end of the rotating member 31 to realize the rotational movement of the driving rod 32. The commutator 33 is two arranged at both ends of the driving rod 32. The commutator 33 can realize the transmission of the rotation direction in the vertical direction. The shear jack structure 34 is two distributed at both ends of the driving rod 32. The shear jack structure 34 can realize stable lifting and lowering movement. The shear jack structure 34 is connected to the horizontal driving end of the commutator 33 to utilize the commutator 33 to drive the shear jack structure 34 to operate and realize lifting and lowering. The ejection ends of the upper and lower shear jack structures 34 are respectively facing the top and bottom of the door frame 1 without a threshold, and the upper latch 35 and the lower latch 36 are respectively connected to the ejection ends of the upper and lower shear jack structures 34.

[0042] It should be noted that the commutator 33 is a conventional structure in the prior art. Its core structure for realizing the vertical rotation reversal function lies in the internally arranged worm gear structure, and the rotating shafts of the worm gear and the worm gear have connection positions for connecting the coupling to facilitate the connection of the corresponding rods and realize the function of vertically converting the rotation direction.

[0043] Therefore, under the rotational drive of the rotating member 31, the driving rod 32 rotates synchronously, and under the reversing rotation of the commutator 33, the ejection end of the shear jack structure 34 is extended or reset, thereby driving the upper latch 35 and the lower latch 36 to extend synchronously to lock the door leaf 2 or retract and reset synchronously to release the locked state.

[0044] Regarding the structure and function of the rotating member 31 driving the driving rod 32 to rotate synchronously: the rotating member 31 includes a base 310, a driving motor 311, a driving gear 312, a driven gear 313, a worm wheel 314 and a worm; the base 310 is mounted on the door leaf 2 by screws, the driving motor 311 adopts a servo motor, a reduction motor or a stepping motor, and the driving motor 311 is mounted on the base 310 by screws, the driving gear 312 is connected to the rotating end of the driving motor 311 so that the driving gear 312 and the driving motor 311 rotate synchronously, the driven gear 313 is rotatably connected to the base 310, the driven gear 313 is meshed with the driving gear 312, the worm and the driven gear 313 rotate coaxially, the worm wheel 314 is rotatably connected to the base 310, the worm wheel 314 is perpendicular to the worm, and the worm wheel 314 is meshed with the worm. The driving rod 32 includes an upper screw rod 321 and a lower screw rod 322 with opposite thread rotation directions. The upper screw rod 321 and the lower screw rod 322 are respectively connected to two ends of the worm wheel through couplings.

[0045] Therefore, under the driving action of the drive motor 311, the meshing of the gears and the meshing action of the worm of the worm wheel 314 is utilized to achieve the transmission of the speed ratio between the gears, thereby achieving the function of vertical conversion of the rotation direction, and ultimately achieving the function of synchronous rotation of the upper screw 321 and the lower screw 322. The upper and lower shear jack structures 34 receive opposite driving actions by limiting the thread rotation directions of the upper screw 321 and the lower screw 322 to opposite directions, thereby causing the ejection ends of the upper and lower shear jack structures 34 to retract inward or eject outward synchronously.

[0046] Regarding the structure and function of the ejector end of the shear jack structure 34: The shear jack structure 34 includes a transverse screw 341, two sliders 342, two shear rods 343, and a lifting block 344. The transverse screw 341 is connected to the transverse drive end of the commutator 33 through a rod or directly. The threads at both ends of the transverse screw 341 rotate in opposite directions. The two sliders 342 respectively engage with the threads at the two ends of the transverse screw 341. The two ends of the two shear rods 343 are respectively hinged to the two sliders 342. The ends of the two shear rods 343 away from the sliders 342 are both hinged to the lifting block 344. The shear rods 343 and the lifting block 344 can be divided into two groups, upper and lower, so that the overall structure is diamond-shaped, making the overall structure more stable and symmetrical. The upper latch 35 is installed on the lifting block 344 at the top of the shear jack structure 34, and the lower latch 36 is installed on the lifting block 344 at the bottom of the shear jack structure 34. Therefore, when the transverse screw 341 rotates, the two sliders 342 can be driven to move closer to or away from each other. When they move closer to each other, the lifting block 344 can be pushed out, thereby driving the upper latch 35 and / or the lower latch 36 to extend and lock the door leaf 2. Otherwise, the door leaf 2 is unlocked.

[0047] In this embodiment, there are multiple upper pins 35 and lower pins 36. The lateral driving end of a commutator 33 is linked to one or more shear jack structures 34 through a rod, and the lifting block 344 of a shear jack structure 34 is connected to one or more upper pins 35 or lower pins 36 through a rod.

[0048] Specifically, there are three upper latches 35, each corresponding to one of the three shear jack structures 34. The transverse screws 341 and / or commutators 33 of adjacent shear jack structures 34 are connected by rods, thereby achieving synchronous operation of the three shear jack structures 34 and the synchronous extension or retraction and reset of the three upper latches 35. There are five lower latches 36, with the tops of the three lower latches 36 connected as a whole by rods. The tops of the other two lower latches 36 are also connected as a whole by rods. Both lower latches 36 correspond to one shear jack structure 34 via corresponding rods. The two shear jack structures 34 are connected to the commutator 33 between them by rods, thereby achieving synchronous operation of the two shear jack structures 34 and the synchronous extension or retraction and reset of the five lower latches 36.

[0049] Regarding the structure of the sealant that seals and waterproofs the gap between the door leaf 2 and the door frame 1 without a threshold, and the gap between the two door leaves 2 when the door leaf 2 is in the closed state:

[0050] like Figures 5 to 7 As shown, the sealing components include a movable sealing strip 14, a butt sealing strip 22, and a door frame sealing strip 13, all of which are made of rubber or silicone materials; the movable sealing strip 14 is used to seal and waterproof the gap between the bottom of the door frame 1 without a threshold and the ground; the butt sealing strip 22 is used to seal and waterproof the gap between the door leaves 2 when the two door leaves 2 are closed; the door frame sealing strip 13 is used to seal and waterproof the gap between the door leaf 2 and the door frame 1 without a threshold when the door leaf 2 is closed.

[0051] like Figure 1 、 Figure 5 、 Figure 6As shown, regarding the installation structure of the movable sealing strip 14: a accommodating groove 24 is provided at the bottom of the side of the door leaf 2 near the upper and lower telescopic components 3, and the accommodating groove 24 extends horizontally, and a strip frame 15 is inserted into the accommodating groove 24, and the strip frame 15 is locked and connected with the lower latch 36. When the lower latch 36 is active, it can drive the strip frame 15 to partially extend or move into the accommodating groove 24; there are two movable sealing strips 14, and the two movable sealing strips 14 are respectively fixed on the bottom surface of the strip frame 15 and the side surface near the inner wall of the accommodating groove 24; the movable sealing strip 14 located on the side is pressed against the inner wall of the accommodating groove 24, and during the movement of the lower latch 36, the movable sealing strip 14 on the side is always in a state of pressing against the inner wall of the accommodating groove 24; when the upper and lower telescopic components drive the lower latch 36 and the strip frame 15 to move downward, the movable sealing strip 14 at the bottom is pressed against the sealing plate 11. Therefore, when the door leaf 2 is closed and the lower latch 36 is in a locked state, the movable sealing strip 14 can be used to seal the gap between the door leaf 2, the sealing plate 11 and the accommodating groove 24, thereby improving the waterproof effect.

[0052] Regarding the connection structure between the strip frame 15 and the lower latch 36: the strip frame 15 is provided with a connecting piece 16, which is provided with a strip hole 161. The lower latch 36 is provided with a connecting hole 361. The bolt 17 passes through the strip hole 161 and is threadedly connected to the connecting hole 361, thereby achieving a fixed connection between the strip frame 15 and the lower latch 36. During routine maintenance and repair, the horizontal position of the strip frame 15 can be adjusted through the strip hole 161 to ensure that the movable sealing strip 14 on the side is always in effective contact with the inner wall of the receiving groove 24, thereby maintaining an effective waterproofing effect between the movable sealing strip 14 and the inner wall of the receiving groove 24.

[0053] like Figure 7 As shown, regarding the installation structure of the docking sealing strip 22: the opposite edges of the two door leaves 2 are fixedly connected with the docking sealing plates 21, and the relative cross-sectional shapes of the two docking sealing plates 21 are centrally symmetrical when the door leaves 2 are closed. The side surfaces of the docking sealing plates 21 are provided with a plurality of first step grooves 211 and first ridges 212. The first ridges 212 are correspondingly provided at the groove-shaped edges of the first step grooves 211, and the docking sealing strip 22 is filled in the first step grooves 211. When the two door leaves 2 are closed, the first ridges 212 of the docking sealing plate 21 are embedded in the first step groove 211 of the other docking panel and squeeze the docking sealing strip 22 in the first step groove 211, so that the two first step grooves 211 of the two docking sealing plates 21 are engaged with each other through the first ridges 212, and the docking sealing strip 22 can be effectively squeezed, thereby improving the sealing performance of the door gap between the two door leaves 2 when the door leaves 2 are closed, thereby achieving the effect of waterproofing and flooding prevention.

[0054] like Figure 7As shown, regarding the installation structure of the door frame sealing strip 13: the left and right frames of the door frame without a threshold 1 are both provided with a first matching sealing plate 12, and the side of the first matching sealing plate 12 away from the door frame without a threshold is provided with a second step groove 121, and the side of the first matching sealing plate 12 is provided with a second protrusion 122, and the second protrusion 122 corresponds to the groove edge of the second step groove 121 formed in one piece. The door leaf 2 is fixedly connected to the lateral edge of the door frame without a threshold 1 with a second matching sealing plate 23, and the side of the second matching sealing plate 23 is provided with a third step groove 231, and the side of the second matching sealing plate 23 is provided with a third protrusion 232, and the third protrusion 232 corresponds to the groove edge of the third step groove 231 formed in one piece. The door frame sealing strip 13 is filled and fixed in the second step groove 121 and the third step groove 231. When the door leaf 2 is closed, the second step groove 121 and the third step groove 231 are centrally symmetrical, and the second ridge 122 is embedded in the door frame sealing strip 13 in the third step groove 231. Similarly, the third ridge 232 is embedded in the door frame sealing strip 13 in the second step groove 121, so that the second step groove 121 and the third step groove 231 are engaged with each other through the second ridge 122 and the third ridge 232, and can effectively squeeze the door frame sealing strip 13, thereby improving the sealing of the door gap between the side of the door leaf 2 and the side of the door frame 1 without a threshold when the door leaf 2 is closed, thereby achieving a waterproof and flood-proof effect.

[0055] 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, threshold-free, flood-proof, airtight door, characterized in that: include: A door frame without a threshold; a sealing plate is provided at the bottom of the door frame without a threshold, the sealing plate is provided with an insertion hole, and the sealing plate is provided with an insertion plate inserted into the ground; Two door leaves, the two door leaves are hinged to the left and right sides of the thresholdless door frame through hinges, the door leaves include two panels and a honeycomb sandwich welded between the two panels; the door leaves are provided with an upper latch and a lower latch for locking, the lower latch corresponding to the socket; Sealing parts, including movable sealing strips, docking sealing strips, and door frame sealing strips; The movable sealing strip is connected to the lower latch, and when the lower latch is inserted downward into the insertion hole, the movable sealing strip seals the gap between the bottom of the door leaf and the sealing plate; There are two butt sealing strips, and the two butt sealing strips are respectively arranged on opposite sides of the two door leaves; opposite edges of the two door leaves are fixedly connected with butt sealing plates, and the opposite cross-sectional shapes of the two butt sealing plates are centrally symmetrical when the door leaves are closed, and the sides of the butt sealing plates are provided with a plurality of first step grooves and first convex strips, and the first convex strips are correspondingly arranged at the groove-shaped edges of the first step grooves, and the butt sealing strips are filled in the first step grooves; when the two door leaves are closed, the first convex strips of the butt sealing plates are embedded in the first step grooves of the other butt sealing plates, and squeeze the butt sealing strips in the first step grooves, so that the first step grooves of the two butt sealing plates are engaged with each other through the first convex strips; The door frame sealing strip is arranged at a position between the side surface of the door leaf and the inner side of the door frame without a threshold; when the two door leaves are closed, the two docking sealing strips are pressed against each other, and the side surface of the door leaf is pressed against the inner side of the door frame without a threshold through the door frame sealing strip; the left and right frames of the door frame without a threshold are both provided with a first matching sealing plate, and the first matching sealing plate is provided with a second step groove on the side surface away from the door frame without a threshold, and the side surface of the first matching sealing plate is provided with a second convex strip, and the second convex strip corresponds to the groove edge of the second step groove which is integrally formed; the door leaf is fixedly connected to the lateral edge of the door frame without a threshold close to the lateral edge of the door frame without a threshold It is connected to a second mating sealing plate, a third step groove is provided on the side of the second mating sealing plate, and a third convex strip is provided on the side of the second mating sealing plate, and the third convex strip is integrally formed on the groove edge of the third step groove; the door frame sealing strip is filled and fixed in the second step groove and the third step groove; when the door leaf is closed, the second step groove and the third step groove are centrally symmetrical, the second convex strip is embedded in the door frame sealing strip in the third step groove, and the third convex strip is embedded in the door frame sealing strip in the second step groove, so that the second step groove and the third step groove are engaged with each other through the second convex strip and the third convex strip.

2. The lightweight, threshold-free, flood-proof, airtight door according to claim 1, characterized in that: The door leaf is provided with a receiving groove at the bottom of the side near the upper and lower telescopic components, and a strip frame is plugged into the receiving groove, and the strip frame is connected to the lower latch. The movable sealing strips are arranged on the bottom and side of the strip frame, and the movable sealing strips located on the side are against the inner wall of the receiving groove; when the upper and lower telescopic components drive the lower latch and the strip frame to move downward, the movable sealing strip located at the bottom and the sealing plate are pressed against each other.

3. The lightweight, threshold-free, flood-proof, airtight door according to claim 2, characterized in that: The strip frame is provided with a connecting piece, the connecting piece is provided with a strip hole, the lower pin is provided with a connecting hole, the bolt passes through the strip hole and is threadedly connected to the connecting hole, so that the movable sealing strip on the side is adjusted through the strip hole to press against the inner wall of the accommodating groove.

4. The lightweight, threshold-free, flood-proof, airtight door according to claim 1, characterized in that: The honeycomb sandwich includes a field-shaped frame and four large lattice honeycomb panels. The field-shaped frame has four square grooves. The four large lattice honeycomb panels are respectively arranged in the four square grooves. Both sides of the field-shaped frame are covered with skin, and the skin is composited with the panel.

5. The lightweight, threshold-free, flood-proof, airtight door according to claim 4, characterized in that: The large lattice honeycomb panel adopts a honeycomb panel with a constant cross-section. The interface of the large lattice honeycomb panel is composed of a number of regular hexagonal honeycomb units with a side length of 25 mm. The wall thickness of the regular hexagonal honeycomb unit is 1.5 mm. The thickness of the large lattice honeycomb panel is 114 mm. The thickness of the panel is 3 mm. The total thickness of the door leaf is 120 mm. The honeycomb interlayer and the panel are both made of 6061 aluminum.

6. The lightweight, threshold-free, flood-proof, airtight door according to claim 1, characterized in that: It also includes two groups of upper and lower telescopic components, which are respectively arranged on the sides of the two door leaves; the upper and lower telescopic components include a rotating part, a driving rod, a commutator, and a shear jack structure; the rotating part is arranged on the door leaf, the driving rod is arranged in the vertical direction, the middle part of the driving rod is connected to the driving end of the rotating part, the commutator is arranged at both ends of the driving rod, the shear jack structure is distributed at both ends of the driving rod, the shear jack structure is connected to the horizontal driving end of the commutator, the upper and lower ejection ends of the shear jack structures are respectively facing the top and bottom of the door frame without a threshold, and the upper latch and the lower latch are respectively connected to the ejection ends of the upper and lower shear jack structures.

7. The lightweight, threshold-free, flood-proof, airtight door according to claim 6, characterized in that: The rotating member includes a base, a driving motor, a driving gear, a driven gear, a worm wheel and a worm; the base is arranged on the door leaf, the driving motor is arranged on the base, the driving gear is connected to the rotating end of the driving motor, the driven gear is rotatably connected to the base, the driven gear is meshed with the driving gear, the worm and the driven gear rotate coaxially, the worm wheel is perpendicular to the worm, the worm wheel is rotatably connected to the base, the worm wheel is meshed with the worm, and the driving rod includes an upper screw and a lower screw with opposite thread rotation directions, and the upper screw and the lower screw are respectively connected to the two ends of the worm wheel through a coupling.

8. The lightweight, threshold-free, flood-proof, airtight door according to claim 6, wherein: The shear jack structure includes a transverse screw, two sliders, two shear rods, and a lifting block; the transverse screw is connected to the transverse driving end of the commutator, the threads at both ends of the transverse screw have opposite rotation directions, the two sliders are respectively engaged with the threads at both ends of the transverse screw, the two ends of the two shear rods are respectively hinged to the two sliders, the ends of the two shear rods away from the sliders are hinged to the lifting block, and the upper pin and / or lower pin are connected to the lifting block.

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