Threshold-free waterproof air-tight door

Abstract

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

Description

Technical Field

[0001] The utility model relates to the technical field related to civil air defense equipment, and more specifically, particularly relates to a threshold-free waterproof and airtight door. Background Art

[0002] Waterproof doors are devices installed to prevent underground facilities from flooding due to concentrated rainfall or flooding caused by rivers under extreme weather conditions. For example, waterproof doors are installed in public places and infrastructure with flood risks, such as the external entrances of subways and other buildings, and the entrances to underground parking lots, which can be passages, vents, and entrances and exits of new buildings on the ground and above the ground.

[0003] Therefore, waterproof doors prepared to prevent flooding of underground facilities must not only have excellent watertightness to prevent the spread of disasters, but also be able to open and close stably in emergency situations.

[0004] At present, in the prior art, the waterproof function of the waterproof door after closing is achieved by direct contact between the door leaf and the door frame. The door leaf and the door frame are mostly made of metal plates, and the flatness of their surfaces is difficult to achieve a completely sealed effect after contact. In addition, for waterproof doors without threshold designs, the watertightness between the door leaf and the ground is even more difficult to ensure. Therefore, the watertightness of traditional waterproof doors needs to be improved. Utility Model Content

[0005] 1. Technical issues

[0006] In summary, how to improve the structure of the traditional waterproof door so as to improve its water sealing while also having stable opening and closing performance has become a problem that needs to be solved urgently by those skilled in the art.

[0007] (II) Technical solution

[0008] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0009] The utility model provides a threshold-free waterproof and airtight door. In the utility model, the threshold-free waterproof and airtight door comprises a door frame and a door leaf. The door leaf is hinged on the door frame and can be in watertight contact with both side edges and the top edge of the door frame in a closed state. A door lock system is arranged on the door leaf for locking the door leaf on the door frame.

[0010] A ground sealing assembly linked to the door lock system is also provided on the door leaf, and the ground sealing assembly includes a ground sealing beam hinged on the door leaf and capable of being flipped up and down relative to the door leaf, and a sealing strip capable of being deformed under pressure is provided on the bottom surface of the ground sealing beam, and the ground sealing beam can achieve sealed contact with the door leaf and the ground at the same time.

[0011] Preferably, in the threshold-less waterproof and sealed door provided by the utility model, a door leaf sealing contact plate is provided at the bottom of the door leaf and on one side of the ground sealing beam provided on the door, and a sealing beam contact plate is provided on the ground sealing beam, which can be flipped along with the ground sealing beam and can be in sealing contact with the door leaf sealing contact plate, and a sealed connection between the door leaf and the ground sealing beam is achieved through the cooperation between the door leaf sealing contact plate and the sealing beam contact plate.

[0012] Preferably, in the threshold-less waterproof and airtight door provided by the present invention, a sealing rubber layer is provided on a side of the door leaf contact plate that is used to abut against the sealing beam contact plate.

[0013] Preferably, in the threshold-less waterproof and sealed door provided by the utility model, the ground sealing assembly includes a transmission group; the transmission group includes a lateral connecting rod linked with the door lock system and capable of lateral reciprocating motion, a push-pull connecting rod for transmitting push-pull forces, a transmission member arranged between the lateral connecting rod and the push-pull connecting rod for transmitting power, and a limit plate for limiting the flipping of the ground sealing beam, an arc-shaped slide groove is arranged on the limit plate, and a sliding block is slidably matched with the arc-shaped slide groove, the sliding block is fixed relative to the ground sealing beam, the push-pull connecting rod is connected to the ground sealing beam through a universal joint, and the transmission member is hinged to the lateral connecting rod and the push-pull connecting rod.

[0014] Preferably, in the threshold-less waterproof and sealed door provided by the utility model, the limiting plates are in a group of two, the two limiting plates in the same group are arranged in parallel and at intervals, a sliding plate is arranged between the two limiting plates in the same group, the sliding plate is fixed to the ground sealing beam, and the sliding block is fixed on the sliding plate.

[0015] Preferably, in the threshold-less waterproof and sealed door provided by the utility model, the transmission member includes a first fork arm and a second fork arm, the first fork arm and the second fork arm are connected by a sleeve, the sleeve is arranged on the door leaf, the first fork arm is hinged to the transverse connecting rod, and the second fork arm is hinged to the push-pull connecting rod.

[0016] Preferably, in the threshold-less waterproof and airtight door provided by the utility model, a limiting device for limiting the lateral movement of the lateral moving link is provided on the door leaf relative to the rod end of the lateral moving link.

[0017] Preferably, in the threshold-less waterproof and sealed door provided by the present invention, the limit plates are provided in multiple groups, and all the limit plates are arranged at equal intervals; the transverse connecting rod, the push-pull connecting rod and the transmission member constitute a connecting rod unit, and the connecting rod unit is provided in multiple groups and is arranged at intervals.

[0018] Preferably, in the threshold-less waterproof and sealed door provided by the utility model, the universal joint includes a universal joint connecting seat, the universal joint connecting seat is a U-shaped frame structure, a connecting ball is arranged in the universal joint connecting seat, the bottom end of the push-pull connecting rod is provided with a push-pull connecting rod connecting hole that slides with the connecting ball, and the universal joint connecting seat is fixedly connected to the ground sealing beam.

[0019] Preferably, in the threshold-less waterproof and sealed door provided by the utility model, a trapezoidal groove is opened on the ground of the ground sealing beam, the cross-section of the sealing strip is a trapezoidal cross-section, and the sealing strip is detachably arranged in the trapezoidal groove.

[0020] (III) Beneficial effects

[0021] As can be seen from the above, the utility model provides a threshold-free waterproof and airtight door. In the utility model, the threshold-free waterproof and airtight door includes a door frame and a door leaf. The door leaf is hinged on the door frame and can be in watertight contact with the two side edges and the top edge of the door frame in a closed state. A door lock system is arranged on the door leaf for locking the door leaf on the door frame. A ground sealing assembly linked to the door lock system is also arranged on the door leaf. The ground sealing assembly includes a ground sealing beam hinged on the door leaf and can be turned up and down relative to the door leaf. A sealing strip that can be deformed under pressure is arranged on the bottom surface of the ground sealing beam. The ground sealing beam can achieve sealed contact with the door leaf and the ground at the same time. Through the above structural design, when the ground sealing beam is completely engaged with the ground, the door will mechanically compress the bottom sealing strip. After the fast opening and closing locking mechanism is operated, the locking mechanism and the ground sealing beam are linked to achieve fast opening and closing of the door and achieve extremely low leakage for a long time. Compared with traditional closed doors, the threshold-free waterproof closed door provided by the utility model has at least the following advantages: 1. No threshold protruding from the ground, whether in peacetime or wartime, is convenient for a large number of people to pass; 2. A new ground sealing mechanism is used to seal the ground, without the need for a movable threshold or lifting door leaf, and the function conversion between peacetime and wartime is fast; 3. The ground sealing mechanism is simple in design and easy and fast to operate. A simple action of pulling the handle can realize the complex ground sealing function. It also has a self-locking function. When there is no switching force, it can ensure that the ground sealing beam is in the open or closed position and will not fall or rise automatically. Its opening and closing is reliable and stable, and it has excellent water tightness. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation on the present invention. Among them:

[0023] Figure 1This is a schematic structural diagram of a threshold-free waterproof and airtight door in an embodiment of the utility model;

[0024] Figure 2 It is a structural schematic diagram of a door lock system for a waterproof and airtight door without a threshold in an embodiment of the utility model;

[0025] Figure 3 It is a schematic diagram of the local structure of the embodiment of the utility model in which the threshold-free waterproof and airtight door is located at the top;

[0026] Figure 4 It is a structural schematic diagram of a ground sealing assembly at the bottom of a threshold-free waterproof and airtight door in an embodiment of the utility model;

[0027] Figure 5 It is a structural schematic diagram of a waterproof and airtight door without a threshold in an embodiment of the utility model, located at one side thereof near a hinge seat;

[0028] Figure 6 It is a structural schematic diagram of a waterproof and airtight door without a threshold in an embodiment of the utility model, which is located at the other side thereof away from the hinge seat;

[0029] Figure 7 This is a structural schematic diagram of another embodiment of the utility model in which a threshold-free waterproof and airtight door is located at the other side away from the hinge seat.

[0030] in, Figure 6 and Figure 7 Different door frame structures were selected.

[0031] exist Figures 1 to 7 In the figure, the corresponding relationship between the component names and the reference numerals is as follows:

[0032] Door frame 1, door leaf 2, ground sealing beam 3, sealing strip 4, door leaf sealing contact plate 5,

[0033] Sealing beam contact plate 6, sealing rubber layer 7, traverse connecting rod 8, push-pull connecting rod 9, transmission part 10,

[0034] Limiting plate 11, sliding block 12, limiting device 13, door lock 14, hinge seat 15, hinge arm 16, hand wheel 17, large gear 18, door bolt 19, transition piece 20, door leaf sealing strip 21,

[0035] Door frame protrusion 22. DETAILED DESCRIPTION

[0036] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments. Each example is provided by way of explanation of the present invention and does not limit the present invention. In fact, it will be clear to those skilled in the art that modifications and variations may be made in the present invention without departing from the scope or spirit of the present invention. For example, a feature shown or described as a part of one embodiment may be used in another embodiment to produce yet another embodiment. Therefore, it is desired that the present invention includes such modifications and variations within the scope of the appended claims and their equivalents.

[0037] In the description of the present invention, the terms "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention. The terms "connected" and "connection" used in the present invention should be understood in a broad sense. For example, they can be fixed connections or detachable connections; they can be directly connected or indirectly connected through intermediate components. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0038] Please refer to Figures 1 to 7 ,in, Figure 1 This is a schematic structural diagram of a threshold-free waterproof and airtight door in an embodiment of the utility model; Figure 2 It is a structural schematic diagram of a door lock system for a waterproof and airtight door without a threshold in an embodiment of the utility model; Figure 3 It is a schematic diagram of the local structure of the embodiment of the utility model in which the threshold-free waterproof and airtight door is located at the top; Figure 4 It is a structural schematic diagram of a ground sealing assembly at the bottom of a threshold-free waterproof and airtight door in an embodiment of the utility model; Figure 5 It is a structural schematic diagram of a waterproof and airtight door without a threshold in an embodiment of the utility model, located at one side thereof near a hinge seat; Figure 6 It is a structural schematic diagram of a waterproof and airtight door without a threshold in an embodiment of the utility model, which is located at the other side thereof away from the hinge seat; Figure 7 This is a structural schematic diagram of another embodiment of the utility model in which a threshold-free waterproof and airtight door is located at the other side away from the hinge seat.

[0039] The utility model provides a threshold-free waterproof and airtight door, comprising a door frame 1 and a door leaf 2. The door leaf 2 is hinged on the door frame 1 and can be closed with both side edges and a top edge of the door frame 1 to form a watertight contact form. A door lock system is arranged on the door leaf 2 for locking the door leaf 2 on the door frame 1.

[0040] In the present invention, the door leaf 2 is a rectangular door leaf. For the convenience of structural description, the orientation description used in this application is carried out when the door leaf 2 is in use. The door frame 1 is an inverted U-shaped structure, including side door frames and a top door frame (without a threshold) on both sides. The side door frames and the top door frame are installed on the doorway or passage of the building through expansion bolts. A door lock 14 is arranged on the door frame 1 (a metal seat structure, which is used to be stuck on the door frame 1 after the door bolt 19 is extended. The present invention can also arrange a transition piece 20 on the door lock 14. The transition piece 20 has a slight arc shape, which can make the door bolt 19 slide smoothly onto the door lock 14). A hinge seat 15 is also arranged on the side door frame. A hinge arm 16 is arranged through the hinge seat 15 (the hinge arm 16 is a metal steel section, which is used to ensure that the hinge arm 16 has a high strength). The hinge arm 16 is fixedly arranged on the door leaf 2, so as to realize the hinge between the door leaf 2 and the door frame 1. A locking mechanism is provided on the door leaf 2 (it can be provided inside the door leaf 2 or on one side of the door leaf 2, i.e., the front side or the rear side. The locking mechanism is optimally designed to be provided inside the door leaf 2). The specific structure of the locking mechanism is as follows, including: a hand wheel 17 rotatably provided on the door leaf 2, the hand wheel 17 can rotate left and right, a small gear is provided on the hand wheel 17 shaft of the hand wheel 17, and the small gear can rotate synchronously with the hand wheel 17; a large gear 18 meshing with the small gear is rotatably provided inside the door leaf 2 (the large gear 18 is driven by the small gear to rotate, so as to achieve speed reduction and increase the torque output), the large gear 18 can be a complete gear structure, or a partial structure of a complete gear (including at least half of a complete gear part), a gear connecting rod is hinged on the large gear 18, and a first execution group is hinged at the end of the gear connecting rod, and the first execution group The row group includes a first linkage component that can move up and down along a straight line (a vertically arranged limiting structure is provided on the first linkage component, and limiting wheels are provided on both sides of the limiting structure, so as to ensure that the first linkage component can only perform linear movement in the height direction), the first linkage component is hinged to the end of the gear connecting rod, and the first linkage component can be driven to move up and down by rotating the hand wheel 17; a lock hole is provided at a position near the bottom edge of the door leaf 2, and a door bolt 19 is provided in the lock hole, and a linkage connecting rod is provided between the door bolt 19 and the first linkage component, and the two sides of the linkage are hinged to the door bolt 19 and the first linkage component, and the up and down movement of the first linkage component can drive the door bolt 19 to extend or retract in the lock hole. With reference to the structure of the first execution group, the utility model also designs a second execution group, a third execution group and a fourth execution group, which correspond to the side door frame and the top door frame respectively. The first execution group, the second execution group, the third execution group and the fourth execution group are linked in sequence through a connecting rod group (in the prior art, any structure that can change the direction of force transmission can be used as a connecting rod group in the utility model, thereby realizing the conversion of the force in the horizontal direction and the vertical direction).

[0041] In order to achieve a watertight connection between the door leaf 2 and the door frame 1, the utility model is provided with a door frame 1 protruding portion on the side door frame and the top door frame, and a door frame 1 protruding forward (or backward) is provided on the front side (or rear side) of the door frame 1 protruding portion, and an extension portion is extended parallel to the side of the door frame 1 on the door corresponding to the door frame 1, and a groove structure is provided on the extension portion, and a sealing strip is provided on the groove structure. After the door leaf 2 is closed, the door frame 1 can press the sealing strip to achieve watertight contact between the door frame 1 and the door leaf 2. The door lock 14 arranged on the door frame 1 is arranged on the other side of the protruding portion of the door frame 1 (that is, the door frame 1 and the door lock 14 are arranged on the front and rear sides of the protruding portion of the door frame 1 respectively). The utility model arranges a metal spring sheet, namely a transition sheet 20, on the door lock 14 on the path where the door bolt 19 extends out, so that the contact wear between the door bolt 19 and the door lock 14 can be reduced, and an elastic force can be applied to the door bolt 19 to increase the stability of the door leaf 2 relative to the door frame 1 after being locked (to avoid shaking of the door leaf 2).

[0042] In the above structural design, the utility model realizes the watertight connection between the door leaf 2 and the door frame 1 at the left and right and top positions. Since it is impossible to set a threshold protruding relative to the ground on the ground, the utility model cannot use the above structure to achieve the sealing of the bottom of the door leaf 2, which is also the reason why the sealing of the door leaf 2 in the prior art needs to be improved. In order to solve this problem, the utility model proposes the following structural design: a ground sealing component that is linked to the door lock system is provided on the door leaf 2 (the linkage between the ground sealing component and the door lock system is achieved through a connecting rod group), the ground sealing component includes a ground sealing beam 3 that is hinged on the door leaf 2 and can be turned up and down relative to the door leaf 2 (the ground sealing beam 3 is set in front of or behind the door leaf 2, and the ground sealing beam 3 is set close to the bottom edge of the door leaf 2), and a compression-deformable sealing strip 4 is provided on the bottom surface of the ground sealing beam 3, and the ground sealing beam 3 can achieve sealed contact with the door leaf 2 and the ground at the same time.

[0043] The utility model is provided with a ground sealing beam 3, which can be pressed on the ground by flipping, so as to achieve watertight contact between the ground sealing beam 3 and the ground. After flipping, the ground sealing beam 3 needs to achieve watertight contact with the door leaf 2 to fully achieve the bottom sealing of the door leaf 2. Specifically, the utility model is provided with a door leaf sealing contact plate 5 at the bottom of the door leaf 2 and on one side of the door where the ground sealing beam 3 is provided. The door leaf sealing contact plate 5 is made of a metal plate, so that the door leaf sealing contact plate 5 can have a high structural strength and a certain elasticity. When the door leaf sealing contact plate 5 contacts the ground sealing beam 3, the door leaf sealing contact plate 5 is slightly deformed to increase the tightness of the contact with the ground sealing beam 3. A sealing beam contact plate 6 is provided on the ground sealing beam 3, which can be turned over with the ground sealing beam 3 and can be in sealing contact with the door leaf sealing contact plate 5 (the function of the sealing beam contact plate 6 is the same as the above-mentioned door leaf sealing contact plate 5), and the sealing connection between the door leaf 2 and the ground sealing beam 3 is achieved through the cooperation between the door leaf sealing contact plate 5 and the sealing beam contact plate 6. Furthermore, a sealing rubber layer 7 is provided on one side of the door leaf 2 contact plate used to abut against the sealing beam contact plate 6 (made of weather-resistant rubber, both sides of the sealing rubber layer 7 are flat, and the sealing rubber layer 7 is fixedly provided on the sealing beam contact plate 6 or the door leaf sealing contact plate 5).

[0044] The ground sealing beam 3 is a movable part of the ground sealing assembly in the utility model, which is linked with the door lock system. For the driving of the ground sealing beam 3, the utility model is provided with a transmission group. Specifically, the transmission group includes a lateral connecting rod 8 which is linked with the door lock system and can perform lateral reciprocating motion, a push-pull connecting rod 9 for transmitting push-pull forces (the push-pull connecting rod 9 is vertically arranged, and the push-pull connecting rod 9 is a rod with adjustable length, which can convert the lateral movement of the lateral connecting rod 8 into its own movement in the vertical direction), and a transmission member 10 for transmitting power arranged between the lateral connecting rod 8 and the push-pull connecting rod 9 (the transmission member 10 is for realizing the linkage between the ground sealing beam 3 and the door lock system , a structure for transmitting the force), a limit plate 11 for limiting the flipping of the ground sealing beam 3, an arc-shaped slide groove is arranged on the limit plate 11, and a sliding block 12 is slidably matched with the arc-shaped slide groove, and the sliding block 12 is fixed relative to the ground sealing beam 3, the push-pull connecting rod 9 is connected to the ground sealing beam 3 through a universal joint, and the transmission member 10 is hinged to the transverse connecting rod 8 and the push-pull connecting rod 9. Further, the limit plates 11 are grouped in two, and the two limit plates 11 of the same group are parallel and spaced apart, and a sliding plate is arranged between the two limit plates 11 of the same group, the sliding plate is fixed to the ground sealing beam 3, and the sliding block 12 is fixed on the sliding plate. Furthermore, the transmission member 10 includes a first fork arm and a second fork arm, the first fork arm and the second fork arm are connected by a sleeve, the sleeve is arranged on the door leaf 2, the first fork arm is hinged to the transverse link 8, the second fork arm is hinged to the push-pull link 9, and a force transmission shaft is also arranged on the door leaf 2, the force transmission shaft is connected to the first linkage component of the door lock system through a connecting rod or other structure, the up and down movement form of the first linkage component is converted into a rotation form of the force transmission shaft through the connecting rod or other structure, the sleeve is sleeved on the force transmission shaft and can rotate with the force transmission shaft, that is, the force transmission shaft can drive the sleeve to rotate, and the rotation of the sleeve can drive the transverse link 8 and the push-pull link 9 to move through the first fork arm and the second fork arm. When multiple push-pull links 9 are provided, the transverse link 8 can drive other push-pull links 9 to move synchronously. The transverse link 8 is a movable component. In order to limit its movement, the utility model provides a limiting device 13 for limiting the lateral movement of the transverse link 8 on the door leaf 2 relative to the rod end of the transverse link 8. The limiting device 13 is arranged at the theoretical movement limit position of the transverse link 8, and a rubber head is arranged at the rod end of the transverse link 8, so that elastic contact can be achieved between the transverse link 8 and the limiting device 13, thereby avoiding the problem of structural damage caused by hard collision.

[0045] The function of the limit plate 11 is to limit the movement of the ground sealing beam 3 (so that the ground sealing beam 3 can only perform a flipping movement without being shaken left and right by the push-pull connecting rod 9). In one embodiment of the present utility model, the limit plates 11 are provided in multiple groups, and all the limit plates 11 are arranged at equal intervals. In addition, the traverse connecting rod 8, the push-pull connecting rod 9 and the transmission member 10 constitute a connecting rod unit, and the connecting rod unit is provided in multiple groups and is arranged at intervals.

[0046] The push-pull connecting rod 9 of the utility model can be connected with the transverse connecting rod 8 and the ground sealing beam 3 through a universal joint. The universal joint includes a universal joint connecting seat. The universal joint connecting seat is a U-shaped frame structure. A connecting ball is arranged in the universal joint connecting seat. The bottom end of the push-pull connecting rod 9 is provided with a push-pull connecting rod 9 connecting hole that slides with the connecting ball. The universal joint connecting seat is fixedly connected to the ground sealing beam 3.

[0047] The sealing connection between the door leaf 2 and the door frame 1 can also adopt the following structural form: a door leaf groove is arranged on the outer side of the door leaf 2 (mainly the two side edges and the fixed side edge) on the side facing the door frame 1, a door leaf sealing strip 21 is arranged in the door leaf groove, and a door frame protrusion 22 is arranged on the door frame 1 at a position corresponding to the door leaf sealing strip 21. After the door leaf 2 is closed, the door frame protrusion 22 can be against the door leaf sealing strip 21 and cause the door leaf sealing strip 21 to be slightly deformed. Based on the above structural design, a watertight connection between the door leaf 2 and the door frame 1 can be achieved.

[0048] Specifically, a trapezoidal groove is opened on the ground of the ground sealing beam 3, the cross section of the sealing strip 4 is a trapezoidal cross section, and the sealing strip 4 is detachably arranged in the trapezoidal groove.

[0049] In this utility model, the materials used in each structure are as follows:

[0050] Door leaf 2 panel: Mild steel or stainless steel.

[0051] Door Frame 1: Mild Steel Available in Aluminium and Stainless Steel.

[0052] Gasket used for sealing: Silicone, fully formed corners.

[0053] Locking Mechanism: Bronze or stainless steel pins and levers, stainless steel connecting rods, stainless steel gears.

[0054] Bushings and bearings for pins: Bronze oil-impregnated thrust bearings.

[0055] Surface treatment: Aluminum panels are painted with acrylic paint. Door frame 1 is sandblasted cleaned and painted with inorganic zinc primer. Other surface treatments include powder coating, polished stainless steel and anodizing.

[0056] Hinge: Includes bronze oil-impregnated thrust bearing and stainless steel hinge pin.

[0057] In this utility model, the design requirements of each structure are as follows:

[0058] A. The frame of the door frame 1 is angle steel or flat steel, which is used to be installed on the outer surface of the wall.

[0059] B. Bottom door frame 1 is a flat strip embedded in the floor to provide a completely flush surface.

[0060] C. Door frame 1 shall have mounting holes for expansion anchors (options include a masonry subframe with welded anchors for embedding in concrete).

[0061] D. The cutting edge of the door frame 1 should be rounded to maximize the sealing performance.

[0062] The size of the door and the design pressure direction should determine the number and type of latches. The pins are designed to allow for field adjustment of shim pressure.

[0063] As can be seen from the above, the utility model provides a threshold-free waterproof and airtight door. In the utility model, the threshold-free waterproof and airtight door includes a door frame 1 and a door leaf 2. The door leaf 2 is hinged on the door frame 1 and can be in watertight contact with the two side edges and the top edge of the door frame 1 in a closed state. A door lock system is arranged on the door leaf 2 for locking the door leaf 2 on the door frame 1. A ground sealing component linked to the door lock system is also arranged on the door leaf 2. The ground sealing component includes a ground sealing beam 3 hinged on the door leaf 2 and can be turned up and down relative to the door leaf 2. A compression-deformable sealing strip 4 is arranged on the bottom surface of the ground sealing beam 3. The ground sealing beam 3 can achieve sealing contact with the door leaf 2 and the ground at the same time. The utility model provides a compression strip type threshold-free waterproof and airtight door that can seal flush with the floor surface. A sealing beam is provided on the door leaf 2 of the airtight door. When the ground and the sealing beam are fully engaged, the mechanical structure provided on the door leaf 2 will compress the sealing strip 4 at the bottom of the sealing beam by mechanical downward pressure, thereby achieving watertight contact between the door leaf 2 and the ground. After the fast opening and closing locking mechanism is operated, the locking mechanism and the ground sealing beam 3 are linked to achieve fast opening and closing of the door and extremely low leakage for a long time. After the sealing beam lifting mechanism is adjusted, the sealing beam and the door frame 1 should be closely fitted, with a maximum gap of no more than 2 mm.

[0064] In the threshold-free protective closed door provided by the utility model, trapezoidal sponge sealing strips are placed in the rubber strip grooves on the door leaf 2 on the left, right and upper sides, and the embedded pressure plate on the door frame 1 squeezes the sealing strips under the drive of the locking mechanism to achieve the sealing between the left, right and upper sides of the door leaf 2 and the door frame 1. The ground sealing mechanism drives the flip-type ground sealing beam 3 to achieve the sealing between the lower side of the door leaf 2 and the ground. According to tactical and technical requirements, the threshold-free protective closed door cannot have a threshold protruding from the ground, and requires fast conversion of peacetime and wartime functions. Through the above-mentioned technical measures of the utility model, a complete sealing loop can be formed between the door leaf 2 and the door frame 1, and there is no steel-to-steel contact in this sealing loop, thereby ensuring the sealing reliability. Through the above-mentioned structural design, when the ground sealing beam 3 is completely engaged with the ground, the door will mechanically compress the bottom sealing strip 4. After the fast opening and closing locking mechanism is operated, the locking mechanism and the ground sealing beam 3 are linked to achieve fast opening and closing of the door, and extremely low leakage is achieved for a long time. Compared with traditional closed doors, the threshold-free waterproof closed door provided by the utility model has at least the following advantages: 1. No threshold protruding from the ground, whether in peacetime or wartime, is convenient for a large number of people to pass; 2. A new ground sealing mechanism is used to seal the ground, without the need for a movable threshold or lifting door leaf 2, and the function conversion between peacetime and wartime is fast; 3. The ground sealing mechanism is simple in design and easy and fast to operate. A simple action of pulling the handle can realize a complex ground sealing function. It also has a self-locking effect. When there is no switching force, it can ensure that the ground sealing beam 3 is in the open or closed position and will not fall or rise automatically.

[0065] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A threshold-free waterproof closed door, characterized in that: The invention comprises a door frame (1) and a door leaf (2), wherein the door leaf is hinged to the door frame and can be in watertight contact with both side edges and the top edge of the door frame in a closed state, and a door lock system is arranged on the door leaf for locking the door leaf on the door frame; The door leaf is also provided with a ground sealing assembly linked to the door lock system, the ground sealing assembly comprises a ground sealing beam (3) hinged on the door leaf and capable of being flipped up and down relative to the door leaf, a compression-deformable sealing strip (4) is provided on the bottom surface of the ground sealing beam, and the ground sealing beam can achieve sealing contact with the door leaf and the ground at the same time.

2. The threshold-free waterproof sealed door according to claim 1, characterized in that: A door leaf sealing contact plate (5) is provided at the bottom of the door leaf and on one side of the ground sealing beam provided on the door, and a sealing beam contact plate (6) is provided on the ground sealing beam, which can be turned over with the ground sealing beam and can be in sealing contact with the door leaf sealing contact plate. The door leaf and the ground sealing beam are sealed together by the cooperation of the door leaf sealing contact plate and the sealing beam contact plate.

3. The threshold-free waterproof sealed door according to claim 2, characterized in that: A sealing rubber layer (7) is provided on a side of the door leaf contact plate for contacting the sealing beam contact plate.

4. The threshold-free waterproof sealed door according to claim 1, characterized in that: The ground sealing assembly includes a transmission group; The transmission group includes a traverse connecting rod (8) which is linked with the door lock system and can perform lateral reciprocating motion, a push-pull connecting rod (9) for transmitting push-pull forces, a transmission member (10) arranged between the traverse connecting rod and the push-pull connecting rod for transmitting power, and a limit plate (11) for limiting the flipping of the ground sealing beam, the limit plate is provided with an arc-shaped sliding groove, and a sliding block (12) is slidably matched with the arc-shaped sliding groove, the sliding block is fixedly arranged relative to the ground sealing beam, the push-pull connecting rod is connected to the ground sealing beam through a universal joint, and the transmission member is hinged to the traverse connecting rod and the push-pull connecting rod.

5. The threshold-free waterproof sealed door according to claim 4, characterized in that: The limiting plates form a group of two, and the two limiting plates in the same group are arranged in parallel and at intervals. A sliding plate is arranged between the two limiting plates in the same group, and the sliding plate is fixed to the ground sealing beam, and the sliding block is fixed on the sliding plate.

6. The threshold-free waterproof sealed door according to claim 4, characterized in that: The transmission member includes a first fork arm and a second fork arm, the first fork arm and the second fork arm are connected via a shaft sleeve, the shaft sleeve is arranged on the door leaf, the first fork arm is hinged to the transverse connecting rod, and the second fork arm is hinged to the push-pull connecting rod.

7. The threshold-free waterproof sealed door according to claim 4, characterized in that: A limiting device (13) for limiting the lateral movement of the lateral movement connecting rod is arranged on the door leaf relative to the rod end of the lateral movement connecting rod.

8. The threshold-free waterproof sealed door according to claim 4, characterized in that: The limiting plates are provided in multiple groups, and all the limiting plates are arranged at equal intervals; The traverse connecting rod, the push-pull connecting rod and the transmission member constitute a connecting rod unit, and the connecting rod unit is provided in multiple groups and arranged at intervals.

9. The threshold-free waterproof sealed door according to claim 4, characterized in that: The universal joint includes a universal joint connecting seat, which is a U-shaped frame structure. A connecting ball is arranged in the universal joint connecting seat. The bottom end of the push-pull connecting rod is provided with a push-pull connecting rod connecting hole that slides with the connecting ball. The universal joint connecting seat is fixedly connected to the ground sealing beam.

10. The threshold-free waterproof sealed door according to any one of claims 1 to 9, characterized in that: A trapezoidal groove is opened on the ground of the ground sealing beam, the cross section of the sealing strip is a trapezoidal cross section, and the sealing strip is detachably arranged in the trapezoidal groove.

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