Protective door

Abstract

The utility model provides a protective door. The protective door comprises a door frame; the door body comprises a shell and a buffer supporting piece, the shell is provided with an energy absorption cavity, the buffer supporting piece is arranged in the energy absorption cavity, the buffer supporting piece abuts against the two opposite side walls of the energy absorption cavity in the first direction, and the buffer supporting piece is a composite material piece; the door body is provided with a first end and a second end which are opposite in the second direction, and the first end of the door body is movably connected with the door frame through the hinge device; the locking device is arranged at the second end of the door body, and the locking device is matched with the door frame and the door body so as to open or close the door body. According to the protective door disclosed by the utility model, the door body comprises the shell and the buffer supporting piece, and the buffer supporting piece is arranged in the energy absorption cavity of the shell and is a composite material piece. The protective performance of the protective door is improved, the door body has higher structural strength and lighter weight, the self weight is reduced, the cost is reduced, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of protective engineering, in particular to a protective door. Background Art

[0002] As the most important protective equipment at the entrance of a protective project, the protective door can resist the shock wave of an explosion and plays a decisive role in ensuring the overall safety of personnel and equipment within the project.

[0003] At present, the research and production of protective doors are mainly based on reinforced concrete structures and steel structures. Therefore, the existing protective doors have shortcomings such as heavy weight, easy rust, poor durability, and excessively high cost of the door body in order to improve the protective performance. Utility Model Content

[0004] In view of the above problems, the utility model provides a protective door, in which a buffer support is arranged in the energy absorption cavity of the outer shell. The buffer support is a composite material part, and has reduced dead weight, improved the protective performance of the door body, extended service life, and has low cost.

[0005] The utility model provides a protective door, comprising: a door frame; a door body, the door body comprising an outer shell and a buffer support, the outer shell having an energy absorbing cavity, the buffer support being arranged in the energy absorbing cavity, the buffer support being abutted against opposite side walls of the energy absorbing cavity along a first direction, the buffer support being a composite material member; a hinge device, the door body having a first end and a second end opposite to each other along a second direction, the first end of the door body being movably connected to the door frame via the hinge device; a locking device, the locking device being arranged at the second end of the door body, the locking device respectively cooperating with the door frame and the door body to open or close the door body.

[0006] According to the protective door of the utility model, the door body is constructed to include an outer shell and a buffer support member, the outer shell has an energy absorption cavity, the buffer support member is arranged in the energy absorption cavity, and the buffer support member is a composite material member. When the door body is subjected to impact force, such as explosion impact force, the buffer support member can absorb and buffer the impact force transmitted from the outer shell, and evenly distribute the impact force to the inner side wall of the outer shell, the door frame and the wall, which is conducive to better absorption and buffering of impact energy, improving the protective performance of the protective door, and the door body has higher structural strength and lighter weight, reducing dead weight, and can also reduce costs, which is conducive to extending the service life of the door body.

[0007] In some embodiments, there are a plurality of buffer supports, and the plurality of buffer supports divide the energy absorbing cavity into a plurality of sub-cavities.

[0008] In some embodiments, the energy absorption cavity is formed into an arc shape bulging outward along the first direction, a plurality of buffer supports are arranged at intervals and parallel to each other along the extension direction of the energy absorption cavity, and each buffer support extends along the first direction.

[0009] In some embodiments, the buffer support member is a basalt fiber reinforced composite material member; and / or, the buffer support member is a honeycomb structure member.

[0010] In some embodiments, the door body further includes a filling layer, wherein the filling layer fills the energy absorbing cavity, and the filling layer is aramid fiber.

[0011] In some embodiments, the shell includes: a first side panel, a second side panel, a third side panel and a fourth side panel, the first side panel and the second side panel are opposite to each other along the first direction and are both formed in an arc shape; the third side panel and the fourth side panel are respectively located at the two ends of the first side panel and the second side panel, and are respectively connected to the first side panel and the second side panel to jointly define the energy absorption cavity.

[0012] In some embodiments, the door frame includes a first blocking plate and a second blocking plate relatively distributed along the second direction, the first blocking plate and the second blocking plate extend obliquely toward a side away from each other in a direction from inside to outside relative to a center line of the door frame, the third side plate is parallel to the first blocking plate, and the fourth side plate is parallel to the second blocking plate.

[0013] In some embodiments, the door frame also includes: a first connecting plate and a second connecting plate, the first connecting plate is arranged on the inner side of the first blocking plate along the first direction and connected to the first blocking plate, the second connecting plate is arranged on the inner side of the second blocking plate along the first direction and connected to the second blocking plate, and the locking device is respectively connected to the door body and the second connecting plate.

[0014] In some embodiments, the locking device includes: a movable guide rail, which is fixedly arranged on the door frame; a first latch, which is provided with a first latch groove opening along the second direction; a second latch, which is provided with a second latch groove opening along the second direction, and the opening directions of the second latch groove and the first latch groove are opposite, and the second latch groove is movably arranged on the movable guide rail between a first position and a second position, wherein, in the first position, the first latch groove is engaged with the second latch groove, and the second latch groove is engaged with the first latch groove, and in the second position, the first latch groove is disengaged from the second latch groove, and the second latch groove is disengaged from the first latch groove.

[0015] In some embodiments, the hinge device includes: a fixed base, which is suitable for being fixed to a wall; a movable arm, one end of which is rotatably connected to the fixed base and the other end is connected to the door body, and the movable arm is suitable for driving the fixed base to rotate relative to the fixed base. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 A schematic structural diagram of a protective door according to an embodiment of the utility model at one angle;

[0018] Figure 2 A cross-sectional view of a protective door according to an embodiment of the utility model;

[0019] Figure 3 It is a schematic structural diagram of the buffer support member of the protective door according to an embodiment of the utility model.

[0020] Description of reference numerals:

[0021] 100-protective door;

[0022] 1- Door frame;

[0023] 11-first blocking plate; 12-second blocking plate; 13-first connecting plate; 14-second connecting plate;

[0024] 2- portal;

[0025] 21- housing;

[0026] 211-first side plate; 212-second side plate; 213-third side plate; 214-fourth side plate;

[0027] 22-energy absorbing cavity; 23-buffer support member; 24-filling layer;

[0028] 3- Hinge device;

[0029] 31-fixed seat; 311-seat body; 312-first connecting ear; 313-second connecting ear;

[0030] 32- movable arm;

[0031] 33-rotation axis;

[0032] 4-Locking device;

[0033] 41-moving guide rail;

[0034] 42-first fastener; 421-first slot;

[0035] 43 - second latching member; 431 - second latching slot; 432 - movable guide slot. DETAILED DESCRIPTION

[0036] In order to make the above-mentioned purposes, features and advantages of the embodiments of the present application more obvious and understandable, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of this application.

[0037] As the most important protective equipment at the entrance of a protective project, the protective door can resist the shock wave of an explosion and plays a decisive role in ensuring the overall safety of personnel and equipment in the project. At present, the research and production of protective doors are mainly based on reinforced concrete structures and steel structures. Therefore, the existing protective doors have shortcomings such as large deadweight, high maintenance costs, and excessive cost of the door body to improve the protective performance.

[0038] In view of this, the utility model provides a protective door, in which the door body is constructed to include an outer shell and a buffer support member, the outer shell has an energy absorption cavity, the buffer support member is arranged in the energy absorption cavity, and the buffer support member is a composite material member. When the door body is subjected to impact force, such as explosion impact force, the buffer support member can absorb and buffer the impact force transmitted from the outer shell, and evenly distribute the impact force to the inner side wall of the outer shell, the door frame and the wall, thereby improving the overall impact resistance of the protective door. In addition, the buffer support member has higher structural strength and lighter weight, which is conducive to better absorption and buffering of impact energy, improving the service life and protective performance of the door body, and the cost is relatively low. In addition, the outer shell is configured as a cavity structure with an energy absorption cavity, which is conducive to reducing the dead weight of the door body, thereby reducing the overall weight, and can also reduce costs.

[0039] Reference below Figure 1-Figure 3 A protective door 100 according to an embodiment of the present invention is described.

[0040] Combination Figure 1 and Figure 2 The protective door 100 of the embodiment of the utility model can be used in protective projects, such as tunnels, underground shelters, etc. The protective door 100 can be set at the entrance of the protective project. The protective door 100 can include: a door frame 1, a door body 2, a hinge device 3 and a locking device 4.

[0041] Among them, Figure 1 As shown, the door frame 1 can be roughly square-shaped, and the door frame 1 defines an entrance. The door frame 1 can be fixed to a door opening of a wall, and the wall refers to the wall of a protective project.

[0042] The door body 2 may include a shell 21 and a buffer support 23. The shell 21 has an energy absorbing cavity 22. The buffer support 23 is disposed in the energy absorbing cavity 22. The buffer support 23 and the energy absorbing cavity 22 are connected along a first direction (eg Figure 2 The first direction may be the inner and outer directions, wherein the side of the door body 2 facing the inner side of the entrance is the inner direction, and the direction of the door body 2 facing the outer side of the entrance is the outer direction. When the door body 2 is subjected to an impact force such as an explosion impact force, the outer side wall of the outer shell 21 can transfer the external force to the internal buffer support 23, and the buffer support 23 absorbs the impact force and evenly transfers the impact force to the inner side wall of the outer shell 21, the door frame 1 and the wall. Thus, the overall impact resistance is improved.

[0043] The buffer support 23 is a composite material, so that the buffer support 23 has a higher structural strength and a lighter weight, which is conducive to better absorption and buffering of impact energy, improving the service life and protection performance of the door body 2, and the cost is low. In addition, in order to ensure the structural strength of the shell 21, the thickness of the side wall of any side of the shell 21 can be adjusted according to actual needs. The shell 21 is set to a cavity structure with an energy absorption cavity 22, which is conducive to reducing the deadweight of the door body 2, thereby reducing the overall weight.

[0044] The door body 2 has a second direction (such as Figure 2 The first end of the door body 2 is movably connected to the door frame 1 through the hinge device 3. For example, the first end of the door body 2 is rotatably matched with the door frame 1 through the hinge device 3. The locking device 4 is provided at the second end of the door body 2, and the locking device 4 is respectively matched with the door frame 1 and the door body 2 to open or close the door body 2.

[0045] According to the protective door 100 of the embodiment of the utility model, the door body 2 is constructed to include an outer shell 21 and a buffer support 23, the outer shell 21 has an energy absorption cavity 22, the buffer support 23 is arranged in the energy absorption cavity 22, and the buffer support 23 is a composite material. When the door body 2 is subjected to an impact force such as an explosion impact force, the buffer support 23 can absorb and buffer the impact force transmitted from the outer shell 21, and evenly distribute the impact force to the inner side wall of the outer shell 21, the door frame 1 and the wall, which is conducive to better absorption and buffering of impact energy, improving the protective performance of the protective door 100, and the door body 2 has a higher structural strength and lighter weight, reducing its own weight, and can also reduce costs, which is conducive to extending the service life of the door body 2.

[0046] In some embodiments, reference Figure 2 , there can be multiple buffer supports 23, and multiple buffer supports 23 divide the energy absorption cavity 22 into multiple sub-cavities. For example, multiple buffer supports 23 can be arranged in parallel and at intervals, in which case, a sub-cavity with mutually parallel side walls is formed between two adjacent buffer supports 23; or, multiple buffer supports 23 can be connected in sequence and arranged obliquely to form a wave shape, in which case, a triangular sub-cavity is formed between two adjacent buffer supports 23. In this way, the large energy absorption cavity 22 is divided into multiple sub-cavities by multiple buffer supports 23, which is conducive to better dispersing the impact force, thereby improving the protective performance of the door body 2.

[0047] In some embodiments, reference Figure 2 The energy absorption cavity 22 is formed into an arc shape along the first direction and convex from the inner side of the door frame 1 to the outer side. In other words, the energy absorption cavity 22 can be formed into an arch structure, and a plurality of buffer support members 23 are arranged at intervals and parallel to each other along the extension direction of the energy absorption cavity 22, and each buffer support member 23 extends along the first direction. In this way, it is beneficial for the protective door 100 to evenly disperse the shock wave, so that the pressure on the door body 2 is evenly distributed, thereby improving the protective performance of the door body 2.

[0048] In some embodiments, the buffer support member 23 is a basalt fiber reinforced composite material. Since basalt fiber reinforced composite materials have the characteristics of light weight, high strength, corrosion resistance, insulation, non-magnetic conductivity, undetectability, low thermal conductivity, and high durability, the buffer support member 23 made of this material has a lightweight structure, high strength, and high toughness, a fast and convenient process, good structural integrity, and can maintain excellent load-bearing and impact resistance. In addition, the material is undetectable, which is conducive to concealment during wartime.

[0049] Further, refer to Figure 3 The buffer support member 23 is a honeycomb structure member, that is, the buffer support member 23 can be a honeycomb support plate, which is structurally composed of a plurality of hexagonal cells, for example, nine. Since the honeycomb structure has more honeycomb holes, it is beneficial for the buffer support member 23 to better absorb the impact force, so as to better support the shell 21 and improve the overall protection performance of the door body 2.

[0050] In some embodiments, reference Figure 2 The door body 2 may also include a filling layer 24, which is filled in the energy absorption cavity 22. In other words, each sub-chamber may be filled with a filling layer 24. The filling layer 24 is aramid fiber, which can reduce the self-weight of the protective door 100 and make the protective door 100 structure have better overall performance, enhance the strength of the civil air defense engineering protective door 100, and meet the requirements of the overall structural impact resistance.

[0051] Of course, in other alternative embodiments, the filling layer 24 may also be a concrete layer, which can further enhance the overall strength of the door body 2 and help better resist external impacts.

[0052] In some embodiments, reference Figure 2 The housing 21 may include a first side plate 211, a second side plate 212, a third side plate 213 and a fourth side plate 214. The first side plate 211 and the second side plate 212 are opposite to each other along the first direction and are both formed into an arc shape. The third side plate 213 and the fourth side plate 214 are respectively located at the two ends of the first side plate 211 and the second side plate 212, and are respectively connected to the first side plate 211 and the second side plate 212 to jointly define the energy absorption cavity 22. For example, the first side plate 211 may be a side plate of the housing 21 facing outward, the second side plate 212 may constitute a side plate of the housing 21 facing inward, the third side plate 213 may be a left side plate of the housing 21, and the fourth side plate 214 may be a right side plate of the housing 21. In this way, the first side plate 211 and the second side plate 212 are opposite to each other along the first direction and are both formed into an outwardly convex arc shape, which is conducive to better resisting external impact force, thereby improving the overall protection performance, and the structure of the housing 21 is relatively simple and easy to manufacture.

[0053] Optionally, the first side plate 211 , the second side plate 212 , the third side plate 213 and the fourth side plate 214 may be connected by welding, so that the structural strength of the housing 21 is high and easy to implement.

[0054] It can be understood that the buffer support 23 and the filling layer 14 of the honeycomb structure fit the shape of the arched first side panel 211 and the second side panel 212 of the door body 2 in the cross section to form an arched honeycomb sandwich structure, which is beneficial for the protective door 100 to evenly disperse the shock wave and has a good buffering and energy absorption effect.

[0055] In addition, the housing 21 may further include a top plate and a bottom plate, both of which may be formed into an arc shape adapted to the first side plate 211 and the second side plate 212, wherein the periphery of the top plate may be respectively connected to the top ends of the first side plate 211, the second side plate 212, the third side plate 213 and the fourth side plate 214, for example, by welding, and the periphery of the bottom plate may be respectively connected to the bottom ends of the first side plate 211, the second side plate 212, the third side plate 213 and the fourth side plate 214, for example, by welding,

[0056] In some embodiments, reference Figure 2The door frame 1 may include a first blocking plate 11 and a second blocking plate 12, which are relatively distributed along the second direction, and the first blocking plate 11 and the second blocking plate 12 are inclined to extend away from each other from the inside to the outside relative to the center line of the door frame 1, and the third side plate 213 is parallel to the first blocking plate 11, and the fourth side plate 214 is parallel to the second blocking plate 12.

[0057] In this way, when the door body 2 is in a closed state, the first blocking plate 11 of the door frame 1 abuts against the third side plate 213 of the door body 2, and the second blocking plate 12 of the door frame 1 abuts against the fourth side plate 214 of the door body 2. Moreover, compared with the scheme in which the first blocking plate 11 and the second blocking plate 12 both extend in the inward and outward directions, since the first blocking plate 11 and the second blocking plate 12 extend obliquely relative to the center line of the door frame 1, the first blocking plate 11 has both a supporting component force in the first direction and a supporting component force in the second direction on the third side plate 213. Correspondingly, the second blocking plate 12 also has a supporting component of force along the first direction and a supporting component of force along the second direction on the fourth side plate 214. When the door body 2 is subjected to external impact, the impact force can be better transmitted between the door body 2 and the door frame 1, and the wall and the door frame 1 can be used to better support the door body 2. At the same time, under the action of external force, the contact between the door frame 1 and the door body 2 can be made closer, achieving a close fit, improving the sealing, and effectively preventing shock wave penetration and external damage.

[0058] Optionally, the housing 21 may be a metal part, for example, the housing 21 may be an alloy steel part. In this way, the housing 21 has a high structural strength.

[0059] In some embodiments, reference Figure 2 The door frame 1 may also include a first connecting plate 13 and a second connecting plate 14, both of which may be used to connect to a wall, that is, the first connecting plate 13 and the second connecting plate 14 may be used to fix the door frame 1 to the wall. The first connecting plate 13 is disposed on the inner side of the first blocking plate 11 along the first direction and is connected to the first blocking plate 11, and the second connecting plate 14 is disposed on the inner side of the second blocking plate 12 along the first direction and is connected to the second blocking plate 12. For example, the first connecting plate 13 and the first blocking plate 11 may be welded, and the second connecting plate 14 and the second blocking plate 12 may be welded, so as to improve the connection strength between the first connecting plate 13 and the first blocking plate 11, and the structural strength between the second connecting plate 14 and the second blocking plate 12.

[0060] The locking device 4 is respectively connected to the door body 2 and the second connecting plate 14. In this way, the second connecting plate 14 can be used to provide an installation position for the locking device 4. In addition, it also avoids affecting the coordination between the second sealing plate 12 and the fourth side plate 214 of the door body 2 when the locking device 4 is set on the second blocking plate 12, which helps to ensure the sealing and protection of the protective door 100.

[0061] In some embodiments, reference Figure 2 The locking device 4 may include: a movable guide rail 41, a first latch 42, and a second latch 43. The movable guide rail 41 is fixedly arranged on the door frame 1. For example, the movable guide rail 41 may be fixedly arranged on the second connecting plate 14 of the door frame 1, and the movable guide rail 41 may extend in the vertical direction. The first latch 42 is provided with a first latch groove 421 opening in the second direction. The second latch 43 is provided with a second latch groove 431 opening in the second direction, and the opening directions of the second latch groove 431 and the first latch groove 421 are opposite, that is, the first latch groove 421 is a U-shaped structure, and the second latch groove 431 is an inverted U-shaped structure.

[0062] The second latch 43 is movably arranged on the movable guide rail 41 between a first position and a second position, wherein, in the first position, the first latch 42 is latched in the second latch slot 431, and the second latch 43 is latched in the first latch slot 421, and in the second position, the first latch 42 is disengaged from the second latch slot 431, and the second latch 43 is disengaged from the first latch slot 421, and during the movement of the second latch 43, the movable guide rail 41 can guide the movement of the second latch 43 to ensure the smoothness of the movement process. In this way, the opening and closing of the protective door is controlled by the upper and lower second latches 43, the device is simple and easy to operate, and the locking device 4 can withstand the large impact force generated when the door body 2 vibrates and is not easily deformed after receiving the impact.

[0063] Optionally, refer to Figure 2 The movable guide rail 41 has a first side surface and a second side surface that are opposite to each other along the second direction, wherein the first side surface faces away from the second connecting plate 14, and the second side surface faces the second connecting plate 14 and is in contact with the second connecting plate 14. In the direction from the first side surface to the second side surface along the second direction, the width of the movable guide rail 41 along the first direction gradually decreases, so that the cross section of the movable guide rail 41 is formed into a trapezoid. Correspondingly, the second latch 43 has a movable guide groove 432, and the movable guide groove 432 is adapted to the shape of the movable guide rail 41, so that the movable guide rail 41 is snapped into the movable guide groove 432. In this way, the cooperation between the second latch 43 and the movable guide rail 41 is simple and reliable, so that the movement process of the second latch 43 is smoother, so as to realize the opening or closing of the door body 2.

[0064] In some embodiments, the movement of the second fastener 43 can be performed by manual pulling by the operator, that is, the operator manually pulls the second fastener 43 along the extension direction of the movable guide rail 41 to make the first fastener 42 and the second fastener 43 engage with each other or separate from each other. In this way, the opening and closing operation of the protective door 100 is simple and easy to operate.

[0065] Alternatively, in some other possible embodiments, the locking device 4 may also be provided with a driving device (not shown in the figure), for example, the driving device may be a driving motor, the driving motor having a retractable output shaft, the output shaft being connected to the second snap-fitting member 43, so as to realize the automatic movement of the second snap-fitting member 43, so that the opening and closing operation of the protective door 100 is time-saving and labor-saving. Of course, a transmission mechanism (not shown in the figure) may also be provided between the driving device and the second snap-fitting member 43 according to factors such as the arrangement position and setting space of the driving device and the second snap-fitting member 43, for example, the transmission mechanism may be a gear rack mechanism or other mechanisms, and the specific layout of the transmission mechanism will not be described in detail here.

[0066] In some embodiments, in combination Figure 1 and Figure 2 The hinge device 3 may include a fixed seat 31 and a movable arm 32. The fixed seat 31 is suitable for being fixed to a wall, and the fixed seat 31 may be fixedly connected to the door frame 1 so that the fixed seat 31 and the door frame 1 form a whole. One end of the movable arm 32 is rotatably connected to the fixed seat 31, and the other end is connected to the door body 2. The movable arm 32 is suitable for driving the fixed seat 31 to rotate relative to the fixed seat 31. In this way, the door body 2 can be opened or closed, and the hinge device 3 has a relatively simple structure and is easy to assemble.

[0067] In some embodiments, in combination Figure 1 and Figure 2 The fixed seat 31 may include a seat body 311, a first connecting ear 312 and a second connecting ear 313, wherein the seat body 311 may be plate-shaped, and the seat body 311 may be fixed to a wall or welded to the door frame 1. The first connecting ear 312 and the second connecting ear 313 are parallel to each other and arranged vertically at intervals. A first pivot hole is formed on the first connecting ear 312, and a second pivot hole is formed on the second connecting ear 313. The first pivot hole and the second pivot hole are opposite to each other. The first end of the movable arm 32 is provided with a pivot matching hole, and the second end is fixedly connected to the first side plate 211 of the door body 2, for example, by welding. The hinge device 3 may also include: a rotating shaft 33, and the movable arm 32 and the fixed seat 31 may be rotatably connected by the rotating shaft 33 passing through the first pivot hole, the pivot matching hole and the second pivot hole in sequence. In this way, the connection method between the fixed seat 31 and the movable arm 32 is relatively simple and easy to implement.

[0068] Optionally, a first bearing can be provided in the first pivot hole, a second bearing can be provided in the second pivot hole, and the rotating shaft 33 can be passed through the first bearing and the second bearing. In this way, the first bearing and the second bearing can be used to provide rotation support for the rotating shaft 33, making the rotation process of the door body 2 smoother and more labor-saving.

[0069] In some embodiments, there may be multiple hinge devices 3, and the multiple hinge devices 3 may be arranged at intervals along the vertical direction. In this way, the door body 2 can be better fixed, so that the rotation process of the door body 2 is smoother and the structure is more reliable.

[0070] It should be noted that the embodiments represented by "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments", etc. mentioned in the specification may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. In addition, when describing specific features, structures or characteristics in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such features, structures or characteristics in conjunction with other embodiments that are explicitly or not explicitly described.

[0071] In general, terms should be understood, at least in part, by the context in which they are used. For example, the term "one or more" as used herein may be used to describe any feature, structure, or characteristic in a singular sense, or may be used to describe a combination of features, structures, or characteristics in a plural sense, depending, at least in part, on the context. Similarly, terms such as "a," "an," or "the" may also be understood to convey singular usage or to convey plural usage, depending, at least in part, on the context.

[0072] It should be easily understood that “on,” “above,” and “over” in the present disclosure should be interpreted in the broadest manner, so that “on” not only means “directly on something,” but also includes the meaning of “on something” with intervening features or layers therebetween, and “above” or “over” not only includes the meaning of “above” or “over,” but also may include the meaning of “above” or “over something” with no intervening features or layers therebetween (i.e., directly on something).

[0073] In addition, spatially relative terms, such as "below," "below," "beneath," "above," "above," etc., may be used herein for ease of description to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation shown in the figures. The device may have other orientations (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein may likewise be interpreted accordingly.

[0074] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A protective door, characterized in that: include: Door frame; A door body, the door body comprising an outer shell and a buffer support member, the outer shell having an energy absorbing cavity, the buffer support member being disposed in the energy absorbing cavity, the buffer support member abutting against two opposite side walls of the energy absorbing cavity along a first direction, and the buffer support member being a composite material member; A hinge device, wherein the door body has a first end and a second end opposite to each other along a second direction, and the first end of the door body is movably connected to the door frame through the hinge device; A locking device is arranged at the second end of the door body, and the locking device cooperates with the door frame and the door body respectively to open or close the door body.

2. The protective door according to claim 1, characterized in that: There are a plurality of buffer support members, and the plurality of buffer support members divide the energy absorbing cavity into a plurality of sub-cavities.

3. The protective door according to claim 2, characterized in that: The energy absorbing cavity is formed into an arc shape convex outward along the first direction, The plurality of buffer support members are arranged at intervals and parallel to each other along the extension direction of the energy absorbing cavity, and each of the buffer support members extends along the first direction.

4. The protective door according to any one of claims 1 to 3, characterized in that: The buffer support member is a basalt fiber reinforced composite material member; and / or the buffer support member is a honeycomb structure member.

5. The protective door according to any one of claims 1 to 3, characterized in that: The door body further comprises a filling layer, wherein the filling layer is filled in the energy absorbing cavity and the filling layer is aramid fiber.

6. The protective door according to any one of claims 1 to 3, characterized in that: The housing comprises: a first side plate, a second side plate, a third side plate and a fourth side plate, wherein the first side plate and the second side plate are opposite to each other along the first direction and are both formed in an arc shape; The third side plate and the fourth side plate are respectively located at two ends of the first side plate and the second side plate, and are respectively connected to the first side plate and the second side plate to jointly define the energy absorption cavity.

7. The protective door according to claim 6, characterized in that: The door frame includes a first blocking plate and a second blocking plate that are relatively distributed along the second direction, and the first blocking plate and the second blocking plate are inclined and extend away from each other in a direction from the inside to the outside relative to the center line of the door frame. The third side plate is parallel to the first blocking plate, and the fourth side plate is parallel to the second blocking plate.

8. The protective door according to claim 7, characterized in that: The door frame further includes: a first connecting plate and a second connecting plate, wherein the first connecting plate is arranged on the inner side of the first blocking plate along the first direction and connected to the first blocking plate, and the second connecting plate is arranged on the inner side of the second blocking plate along the first direction and connected to the second blocking plate. The locking device is connected to the door body and the second connecting plate respectively.

9. The protective door according to any one of claims 1 to 3, characterized in that: The locking device comprises: A movable guide rail, wherein the movable guide rail is fixedly arranged on the door frame; a first fastener, wherein the first fastener is provided with a first fastening groove opening along the second direction; a second fastener, wherein the second fastener is provided with a second fastener slot opening along the second direction, and the second fastener slot and the first fastener slot have opening directions opposite to each other, The second fastener is movably disposed on the movable guide rail between a first position and a second position, wherein in the first position, the first fastener is engaged in the second slot and the second fastener is engaged in the first slot, and in the second position, the first fastener is disengaged from the second slot and the second fastener is disengaged from the first slot.

10. The protective door according to any one of claims 1 to 3, characterized in that: The hinge device comprises: A fixing seat, wherein the fixing seat is suitable for being fixed to a wall; A movable arm, one end of which is rotatably connected to the fixed seat, and the other end of which is connected to the door body, and the movable arm is suitable for driving the fixed seat to rotate relative to the fixed seat.

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