Earthquake refuge protection frame and earthquake refuge protection system

Abstract

This utility model discloses an earthquake refuge and protection frame and an earthquake refuge and protection system, including: a supporting base frame; a supporting and fixed front frame, which is fixed to the front end of the supporting base frame, thus forming a bed frame; two bases, which are respectively installed on the left and right sides of the bed frame; multiple stacked U-shaped protective frames, each U-shaped protective frame having both ends hinged to the corresponding base; two sets of side hinges arranged on the left and right sides of the U-shaped protective frames, each set of side hinges being hinged to the side longitudinal beam of the front frame supporting and fixed front frame and the protective side longitudinal beam of each U-shaped protective frame; and two drive telescopic cylinders, which are respectively hinged to the two side longitudinal beams of the front frame, for driving the multiple U-shaped protective frames to open or fold in an orderly fan shape, so as to form a protective cover in the space above the supporting base frame or to fold the protective cover. This protective frame can be folded up and used as a regular bed without increasing the space occupied by the bed, and can be quickly lowered to protect the body in the event of an emergency disaster.

Description

Technical Field

[0001] This utility model relates to the field of earthquake-resistant and disaster prevention devices, and more specifically to an earthquake refuge and protection frame and an earthquake refuge and protection system. Background Technology

[0002] Although meticulous seismic calculations and designs are often performed in civil engineering structural design, general seismic design cannot completely ensure the safety of ground buildings. Especially in the event of a strong earthquake of magnitude 7 or above, the collapse and damage of buildings are often unavoidable. Therefore, building a relatively stable seismic-resistant structure indoors can play a role in emergency refuge and rescue, and can reduce the risk of casualties during a strong earthquake.

[0003] Currently, earthquake-resistant beds for emergency shelter exist, such as CN221383028U – a titanium alloy earthquake-resistant bed. However, existing earthquake-resistant beds often involve increasing structural strength on a basic bed frame, resulting in a series of drawbacks, such as: large space occupation, lack of lateral protection facilities, small refuge space, poor operability, insufficient stability, low level of intelligence, incompatibility with home environment, and lack of necessary emergency facilities. Utility Model Content

[0004] The purpose of this utility model is to solve at least one of the above-mentioned problems, and in order to achieve these objectives and advantages according to this utility model, the following technical solution is adopted:

[0005] An earthquake refuge shelter includes:

[0006] Support frame;

[0007] A front support frame is provided, the bottom of which is fixed to the front end of the base support frame, thereby forming a bed frame;

[0008] The base consists of two bases arranged near the front support frame, which are respectively installed on the left and right sides of the bed frame;

[0009] The U-shaped protective frame consists of multiple stacked units, with each U-shaped protective frame having both ends hinged to the corresponding base.

[0010] The side hinges are arranged in two sets on the left and right sides of the U-shaped protective frame. Each set of the side hinges is hinged to the front frame side longitudinal beam that supports and fixes the front frame and the protective side longitudinal beam of each U-shaped protective frame.

[0011] Two drive telescopic cylinders are respectively hinged to two front frame side longitudinal beams to drive multiple U-shaped protective frames to open or fold in an orderly fan shape, so as to form a support protective cover in the space above the support base frame or to make the support protective cover retract.

[0012] As can be seen from the above technical solution, compared with the prior art, this utility model discloses an earthquake refuge and protective frame that can be used as a bed frame. When an earthquake occurs, the telescopic cylinder is activated, causing multiple U-shaped protective frames to open in an orderly fan shape, forming a protective cover in the space above the supporting base frame. Together with the supporting base frame and the supporting fixed front frame, it forms a relatively closed earthquake support and protection structure, thereby providing an emergency refuge place and ensuring personal safety. Moreover, the protective cover can also be folded up and used as a regular bed without increasing the space occupied by the bed, and can be quickly lowered to protect the human body in the event of an emergency disaster.

[0013] Furthermore, the base is fixed to the front frame side longitudinal beam and the top longitudinal beam of the support base frame. The telescopic end of the drive telescopic cylinder is hinged to the U-shaped protective frame away from the support fixed front frame. The action of the drive telescopic cylinder can drive multiple U-shaped protective frames to open or fold in an orderly fan shape, so as to form a support protective cover in the space above the support base frame or to make the support protective cover retract.

[0014] Furthermore, it also includes a U-shaped support movable rear frame, the ends of the two rear frame side longitudinal beams of the U-shaped support movable rear frame are respectively hinged to the two top longitudinal beams of the support base frame, and the two rear frame side longitudinal beams are respectively hinged to the two bases, and the bases are hinged to the top longitudinal beams;

[0015] The two ends of the side hinge are respectively hinged to the front frame side longitudinal beam and the rear frame side longitudinal beam;

[0016] The telescopic end of the drive telescopic cylinder is hinged to the rear frame side longitudinal beam;

[0017] The telescopic end of the drive cylinder drives the U-shaped support frame to swing down or up, and then drives multiple U-shaped protective frames to open or fold in an orderly fan shape through the side hinge, so as to form a support protective cover in the space above the support base or to make the support protective cover close.

[0018] Furthermore, the base includes:

[0019] A rocker arm, one end of which is hinged to the front side of the top longitudinal beam;

[0020] The mounting base has its front and rear ends hinged to the end of the rocker arm and the rear frame side longitudinal beam, respectively. The top of the mounting base has a mounting groove, and the ends of the protective side longitudinal beams of each U-shaped protective frame are sequentially hinged to the side wall of the mounting groove.

[0021] Furthermore, each of the side hinges includes: a first chain plate assembly and a second chain plate assembly;

[0022] The first chain plate assembly includes: a first chain plate and a second chain plate, wherein one end of the first chain plate is hinged to the front frame side longitudinal beam, and one end of the second chain plate is hinged to the other end of the first chain plate;

[0023] The second chain plate assembly includes: a plurality of third chain plates and a plurality of fourth chain plates arranged alternately, wherein the plurality of third chain plates and the plurality of fourth chain plates are sequentially hinged end to end to form a hinge string, and both the third chain plates and the fourth chain plates are hinged to the protective side longitudinal beam; wherein, the third chain plates located at the front end of the hinge string are all hinged to the other end of the second chain plate and the front frame side longitudinal beam, and the fourth chain plates located at the rear end of the hinge string are hinged to the rear frame side longitudinal beam.

[0024] Furthermore, the second chain plate assembly also includes a plurality of upper return springs located on the upper side of the hinge string and a plurality of lower return springs located on the lower layer of the hinge string. One end of two adjacent upper return springs and one adjacent lower return spring are respectively staggered and hinged to the protective crossbeams and the protective side longitudinal beams of two adjacent U-shaped protective frames. The other ends of two adjacent upper return springs and two adjacent lower return springs are respectively staggered and hinged to two adjacent fourth chain plates. Among them, the upper return springs on the fourth chain plate closest to the second chain plate are hinged to the front frame side longitudinal beam.

[0025] After the multiple U-shaped protective frames are opened in an orderly fan shape, the hinge string is straightened under the action of the upper and lower return springs, and the hinge string as a whole presents a rigid support to increase the load-bearing capacity of the overall protective frame.

[0026] Furthermore, it also includes auxiliary retraction and extension components, which include:

[0027] The top fixed pulley group consists of multiple top fixed pulley groups, which are respectively installed on the protective crossbeams of multiple U-shaped protective frames and on the front frame crossbeams that support and fix the front frame;

[0028] A first pull rope is wound around the top fixed pulley assembly, and one end of the first pull rope is fixedly connected to the protective crossbeam near the U-shaped support movable rear frame, and the other end is fixedly connected to the top fixed pulley assembly near the U-shaped support movable rear frame.

[0029] The first movable pulley seat is provided with a first movable pulley group and a first pin, and the first pull rope is wound around the first movable pulley group;

[0030] The rear fixed pulley assembly is mounted on the front support frame or connected to the sealing plate on the front support frame.

[0031] An auxiliary spring, one end of which is connected to the front support frame or to a sealing plate on the front support frame;

[0032] The second movable pulley seat is fixedly connected to the other end of the auxiliary spring, and the second movable pulley seat is provided with a second movable pulley group and a second pin.

[0033] The second pull rope is wound around the rear fixed pulley group and the second movable pulley group, and its two ends are fixedly connected to the first pin and the second pin, respectively.

[0034] Furthermore, the first movable pulley group is provided with a first movable pulley groove, a second movable pulley groove, a third movable pulley groove, and a fourth movable pulley groove in sequence;

[0035] The plurality of top fixed pulley groups are respectively a first top fixed pulley group installed on the front frame crossbeam and a second, third, fourth, and fifth top fixed pulley groups spaced apart on the corresponding protective crossbeams. Each of the first, second, third, fourth, and fifth top fixed pulley groups is provided with a lower fixed pulley group and an upper fixed pulley group. The lower fixed pulley group is provided with a first lower fixed pulley groove, a second lower fixed pulley groove, a third lower fixed pulley groove, and a fourth lower fixed pulley groove in sequence. The upper fixed pulley group is provided with a first upper fixed pulley groove, a second upper fixed pulley groove, a third upper fixed pulley groove, and a fourth upper fixed pulley groove in sequence.

[0036] One end of the first pull rope is fixedly connected to the protective crossbeam near the movable rear frame of the U-shaped support. The other end passes sequentially through the grooves of the first lower fixed pulley on the fifth top fixed pulley group, the fourth top fixed pulley group, the third top fixed pulley group, the second top fixed pulley group, and the first lower fixed pulley on the first top fixed pulley group. Then, it extends downwards around the groove of the first movable pulley, folds upwards back around the groove of the first upper fixed pulley on the first top fixed pulley group, passes through the groove of the first upper fixed pulley on the second top fixed pulley group, folds back through the groove of the second lower fixed pulley on the first top fixed pulley group, extends downwards around the groove of the second movable pulley, folds upwards back around the groove of the second upper fixed pulley on the first top fixed pulley group, and passes through the groove of the third top fixed pulley group. The second upper fixed pulley groove of the pulley group folds back and passes through the third lower fixed pulley groove of the first top fixed pulley group, extends downward around the third movable pulley groove, then folds back upward around the third upper fixed pulley groove of the first top fixed pulley group, passes through the third upper fixed pulley groove of the fourth top fixed pulley group, then folds back and passes through the fourth lower fixed pulley groove of the first top fixed pulley group, extends downward around the fourth movable pulley groove, then folds back upward around the fourth upper fixed pulley groove of the first top fixed pulley group, and then passes sequentially through the fourth upper fixed pulley grooves of the second top fixed pulley group, the third top fixed pulley group, and the fourth top fixed pulley group before being fixed to the fourth upper fixed pulley groove of the fifth top fixed pulley group.

[0037] Furthermore, each of the first, second, third, fourth, and fifth top fixed pulley groups is provided with a rope-passing limiting plate. The rope-passing limiting plate has four lower passing limiting holes and four upper passing limiting holes for the first rope to pass through. The four lower passing limiting holes correspond to the grooves of the first, second, third, and fourth lower fixed pulleys, respectively, and the four upper passing limiting holes correspond to the grooves of the first, second, third, and fourth upper fixed pulleys, respectively.

[0038] Furthermore, the rear fixed pulley assembly includes:

[0039] A fixed pulley is disposed on the front support frame or connected to the sealing plate on the front support frame, and is located below the first pin;

[0040] A fixed pulley assembly is disposed on the front support frame or connected to the sealing plate on the front support frame and located below the second pin. The fixed pulley assembly and the fixed pulley are arranged parallel to each other at intervals.

[0041] The second pull rope is wound around the fixed pulley, the fixed pulley group, and the second movable pulley group.

[0042] This utility model also provides an earthquake refuge and protection system, including: the earthquake refuge and protection frame, the seismic wave detector, the alarm, and the controller, wherein the controller is electrically connected to the seismic wave detector, the alarm, and the drive telescopic cylinder;

[0043] The seismic wave detector is used to detect seismic waves and send the seismic wave signals to the controller;

[0044] The controller activates the alarm based on the seismic wave signal and controls the drive telescopic cylinder to open the multiple U-shaped protective frames, which are in a folded state, in an orderly fan-shaped manner, forming the support protective cover in the space above the support base. Attached Figure Description

[0045] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0046] Figure 1 A schematic diagram of the axial side structure of an earthquake refuge and protection frame when it is folded up, as provided by this utility model.

[0047] Figure 2 for Figure 1 A magnified schematic diagram of the structure of part A in the middle.

[0048] Figure 3 This is a schematic diagram of the rear structure of an earthquake refuge and protection frame when it is folded up, as provided by this utility model.

[0049] Figure 4 for Figure 3 A magnified schematic diagram of the structure of part B in the middle.

[0050] Figure 5 for Figure 3 A magnified schematic diagram of the structure of part C in the middle.

[0051] Figure 6 for Figure 3 A magnified schematic diagram of the structure of part D in the middle.

[0052] Figure 7 This is a front view structural diagram of an earthquake refuge and protection frame when it is folded up, as provided by this utility model.

[0053] Figure 8 A schematic diagram of the axonometric structure of an earthquake refuge and protection frame when deployed, provided by this utility model.

[0054] Figure 9 for Figure 8 A magnified schematic diagram of the structure of part E in the middle.

[0055] Figure 10 for Figure 8 A magnified schematic diagram of the structure of part F in the middle.

[0056] Figure 11 This is a rear view diagram of an earthquake refuge and protection frame when it is deployed, which is provided by this utility model.

[0057] Figure 12 This is a front view structural diagram of an earthquake refuge and protection frame when it is deployed, which is provided by this utility model.

[0058] Figure 13 This is a schematic diagram of the mounting base.

[0059] Figure 14 This is another embodiment of the base connection method of this utility model.

[0060] Figure 15 This utility model provides a structural block diagram of an earthquake refuge and protection system.

[0061] Figure 16 This is a control logic block diagram of the controller of this utility model. Detailed Implementation

[0062] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0063] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0064] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0065] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0066] like Figures 1-13 As shown, this utility model embodiment discloses an earthquake refuge and protection frame, comprising:

[0067] Support frame 1;

[0068] The front frame 2 is supported and fixed, and the bottom of the front frame 2 is fixed to the front end of the base frame 1, thus forming the bed frame;

[0069] Base 4, there are two bases 4 arranged close to the front support frame 2, and they are respectively installed on the left and right sides of the bed frame;

[0070] The U-shaped protective frame 6 consists of multiple stacked units, with both ends of each U-shaped protective frame 6 hinged to the corresponding base 4.

[0071] Side hinges 7 are two sets arranged on the left and right sides of the U-shaped protective frame 6. Each set of side hinges 7 is hinged to the front frame side longitudinal beam 21 that supports and fixes the front frame 2 and the protective side longitudinal beam 61 of each U-shaped protective frame 6.

[0072] There are two drive telescopic cylinders 8, which are respectively hinged to the two front frame side longitudinal beams 21. They are used to drive multiple U-shaped protective frames 6 to open or fold in an orderly fan shape, so as to form a support protective cover 200 in the space above the support base frame 1 or to make the support protective cover 200 close.

[0073] The protective frame of this utility model can be used as a bed frame. Specifically, the supporting base frame 1 can be used as a bed frame, and the supporting and fixed front frame 2 can be used as a headboard. A mattress can be placed on the supporting base frame 1 to make it a bed. When the U-shaped protective frame 6 is not closed, the space above the supporting base frame 1 is completely exposed without any obstruction and can be used as a regular bed. When an earthquake occurs, the telescopic cylinder is activated, causing multiple U-shaped protective frames to open in an orderly fan shape, forming a protective shield above the supporting base frame. Together with the supporting base frame and the supporting and fixed front frame, they form a relatively closed earthquake support and protection structure, thereby providing an emergency refuge and ensuring personal safety.

[0074] Therefore, because the protective frame is equipped with a U-shaped protective frame, when it is closed, it can simultaneously form an effective support and protection frame on the upper and side sides of the bed, which can effectively resist the impact and compression of falling floor slabs, collapsing walls, etc., greatly improving personal safety. Moreover, when the U-shaped protective frame is not closed, there are no objects obstructing the upper, side, and rear sides of the bed, providing a wide field of vision, and it is also suitable for use with ordinary beds with a wide field of vision.

[0075] Of course, in some embodiments, a flexible canopy (not shown) can also be provided between two adjacent U-shaped protective frames. In this way, when the U-shaped protective frames are unfolded, the flexible canopy can unfold along with them, thereby realizing a closed support canopy structure. This can also block smaller falling objects and avoid the risk of personal injury caused by gaps between the unfolded U-shaped protective frames that cannot block smaller falling objects.

[0076] Flexible tarpaulins can be made of high-strength, bulletproof tarpaulin made of Kevlar or high-molecular-weight polyethylene fiber to improve their support strength and service life.

[0077] This utility model provides one embodiment of the base 4, see [link to relevant documentation]. Figure 14 The base 4 is fixed on the front frame side longitudinal beam 21 and the top longitudinal beam 11 of the support base frame 1. The telescopic end of the drive telescopic cylinder 8 is hinged to the U-shaped protective frame 6 away from the support and fixed front frame 2. The drive telescopic cylinder 8 can drive multiple U-shaped protective frames 6 to open or fold in an orderly fan shape, so as to form a support protective cover 200 in the space above the support base frame 1 or to make the support protective cover 200 close.

[0078] In this utility model, there is also a U-shaped support movable rear frame 5. The ends of the two rear frame side longitudinal beams 51 of the U-shaped support movable rear frame 5 are respectively hinged to the two top longitudinal beams 11 of the support base frame 1, and the two rear frame side longitudinal beams 51 are respectively hinged to the two bases 4, and the bases 4 are hinged to the top longitudinal beams 11.

[0079] The two ends of the side hinge 7 are respectively hinged to the front frame side longitudinal beam 21 and the rear frame side longitudinal beam 51;

[0080] The telescopic end of the drive telescopic cylinder 8 is hinged to the rear frame side longitudinal beam 51;

[0081] The telescopic end of the drive telescopic cylinder 8 drives the U-shaped support movable rear frame 5 to swing down or up, and then drives multiple U-shaped protective frames 6 to open or fold in an orderly fan shape through the side hinge 7, so as to form a support protective cover 200 in the space above the support base frame 1 or to make the support protective cover 200 close.

[0082] Based on the above solution, this utility model provides another embodiment of the base 4, see [link to relevant documentation]. Figure 7 The base 4 includes:

[0083] Rocker arm 41, one end of rocker arm 41 is hinged to the front side of top longitudinal beam 11;

[0084] Mounting base 42, with its front and rear ends hinged to the end of rocker arm 41 and rear frame side longitudinal beam 51 respectively. Mounting base 42 has a mounting groove 421 at its top. The ends of the protective side longitudinal beam 61 of each U-shaped protective frame 6 are sequentially hinged to the side wall of the mounting groove 421.

[0085] Mounting base 42 can integrate multiple U-shaped protective frames 6 for installation, and also facilitates the unfolding of multiple U-shaped protective frames 6. Moreover, after the U-shaped protective frame 6 is unfolded, the rocker arm 41 can hold the mounting base 42 and connect with the side hinge to achieve the stability of the frame unfolding.

[0086] See Figure 9 , Figure 10 An embodiment of the side hinge 7 is given, each side hinge 7 comprising:

[0087] First chain plate assembly 71, second chain plate assembly 72;

[0088] The first chain plate assembly 71 includes: a first chain plate 711 and a second chain plate 712, one end of the first chain plate 711 is hinged to the front frame side longitudinal beam 21, and one end of the second chain plate 712 is hinged to the other end of the first chain plate 711.

[0089] The second chain plate assembly 72 includes: a plurality of third chain plates 721 and a plurality of fourth chain plates 722 arranged alternately. The plurality of third chain plates 721 and the plurality of fourth chain plates 722 are connected end to end in sequence to form a hinge string, and both the third chain plates 721 and the fourth chain plates 722 are hinged to the protective side longitudinal beam 61. Among them, the third chain plates 721 located at the front end of the hinge string are all hinged to the other end of the second chain plate 712 and the front frame side longitudinal beam 21, and the fourth chain plates 722 located at the rear end of the hinge string are hinged to the rear frame side longitudinal beam 51.

[0090] The hinges not only allow multiple U-shaped protective frames to be stacked and unfolded in an orderly manner, but also provide rigid and stable support for the unfolded U-shaped protective frames, ensuring the stability of the frame after unfolding.

[0091] Of course, based on the above-described embodiment of the side hinge 7, this utility model also provides a second embodiment. The second chain plate assembly 72 further includes a plurality of upper return springs 723 located on the upper side of the hinge string and a plurality of lower return springs 724 located on the lower layer of the hinge string. One end of two adjacent upper return springs 723 and lower return springs 724 are respectively staggered and hinged to the protective crossbeams 62 and protective side longitudinal beams 61 of two adjacent U-shaped protective frames 6. The other ends of two adjacent upper return springs 723 and lower return springs 724 are respectively staggered and hinged to two adjacent fourth chain plates 722. Among them, the upper return spring 723 on the fourth chain plate 722 near the second chain plate 712 is hinged to the front frame side longitudinal beam 21.

[0092] In this way, by setting up the upper and lower return springs, the vibration of the chain plate when the U-shaped protective frame is unfolded can be damped, reducing vibration noise. Moreover, when the U-shaped protective frame is folded up, the corresponding fourth chain plate can be accurately reset under the tension of the upper and lower return springs, avoiding jamming that would affect the folding of the frame.

[0093] Based on the above embodiments, this utility model also provides another embodiment of an earthquake refuge shelter, which further includes an auxiliary retraction component 9, comprising:

[0094] The top fixed pulley group 91 consists of multiple top fixed pulley groups 91, which are respectively installed on the protective crossbeams 62 of multiple U-shaped protective frames 6 and on the front frame crossbeams 22 that support and fix the front frame 2;

[0095] The first pull rope 92 is wound around the top fixed pulley group 91, and one end of the first pull rope 92 is fixedly connected to the protective crossbeam 62 near the U-shaped support movable rear frame 5, and the other end is fixedly connected to the top fixed pulley group 91 near the U-shaped support movable rear frame 5.

[0096] A first movable pulley seat 93 is provided with a first movable pulley group 94 and a first pin 95, and a first pull rope 92 is wound around the first movable pulley group 94.

[0097] The rear fixed pulley group 96 is installed on the supporting and fixed front frame 2, or connected to the sealing plate 3 on the supporting and fixed front frame 2.

[0098] An auxiliary spring 97, one end of which is connected to the front support frame 2 or to the sealing plate 3 on the front support frame 2;

[0099] The second movable pulley seat 98 is fixedly connected to the other end of the auxiliary spring 97. The second movable pulley seat 98 is provided with a second movable pulley group 99 and a second pin 100.

[0100] The second pull rope 101 is wound around the rear fixed pulley group 96 and the second movable pulley group 99. The two ends of the second pull rope 101 are fixedly connected to the first pin 95 and the second pin 100, respectively.

[0101] In this embodiment, when the frame is not deployed, the auxiliary spring is in a contracted state; when the frame is deployed, the auxiliary spring is in a stretched state. Thus, when the frame is folded up under the action of the drive telescopic cylinder, the stretched auxiliary spring can provide a certain pull force to the deployed U-shaped protective frame through the second and first pull ropes, allowing the U-shaped protective frame to be easily folded up. Therefore, by using the auxiliary deployment / retraction assembly 9 in conjunction with the auxiliary drive telescopic cylinder, the load on the pull-back action of the drive telescopic cylinder can be reduced. This not only allows for the selection of a drive telescopic rod with a smaller load, reducing costs, but also extends the lifespan of the drive telescopic cylinder.

[0102] The first and second pull ropes can be made of 2-5mm steel wire, which has good strength and long service life.

[0103] Below, this utility model provides an embodiment of a structure in which the first pull rope is wound around the top fixed pulley group and the first movable pulley group:

[0104] The first movable pulley group 94 is provided with a first movable pulley groove 941, a second movable pulley groove 942, a third movable pulley groove 943, and a fourth movable pulley groove 944 in sequence;

[0105] Multiple top fixed pulley groups 91 are respectively a first top fixed pulley group 911 installed on the front frame crossbeam 22 and a second top fixed pulley group 912, a third top fixed pulley group 913, a fourth top fixed pulley group 914, and a fifth top fixed pulley group 915 spaced apart on the corresponding protective crossbeams 62. Each of the first top fixed pulley group 911, second top fixed pulley group 912, third top fixed pulley group 913, fourth top fixed pulley group 914, and fifth top fixed pulley group 915 has... The system is provided with a lower fixed pulley group 9101 and an upper fixed pulley group 9102. The lower fixed pulley group 9101 is provided with a first lower fixed pulley groove 91011, a second lower fixed pulley groove 91012, a third lower fixed pulley groove 91013, and a fourth lower fixed pulley groove 91014 in sequence. The upper fixed pulley group 9102 is provided with a first upper fixed pulley groove 91021, a second upper fixed pulley groove 91022, a third upper fixed pulley groove 91023, and a fourth upper fixed pulley groove 91024 in sequence.

[0106] One end of the first pull rope 92 is fixedly connected to the protective crossbeam 62 near the U-shaped support movable rear frame 5. The other end passes sequentially through the first lower fixed pulley groove 91011 on the fifth top fixed pulley group 915, the fourth top fixed pulley group 914, the third top fixed pulley group 913, the second top fixed pulley group 912, and the first lower fixed pulley groove 91011 on the first top fixed pulley group 911. After passing downwards around the first movable pulley groove 941, it folds back upwards and passes through the first upper fixed pulley groove 91021 on the first top fixed pulley group 911. It then passes through the first upper fixed pulley groove 91021 on the second top fixed pulley group 912, folds back, passes through the second lower fixed pulley groove 91012 on the first top fixed pulley group 911, extends downwards around the second movable pulley groove 942, folds back upwards and passes through the second upper fixed pulley groove 91022 on the first top fixed pulley group 911, and passes through the second lower fixed pulley groove 91012 on the third top fixed pulley group 913. After the second upper fixed pulley groove 91022 is folded back, it passes through the third lower fixed pulley groove 91013 of the first top fixed pulley group 911, extends downward around the third movable pulley groove 943, then folds back upward around the third upper fixed pulley groove 91023 on the first top fixed pulley group 911, and passes through the third upper fixed pulley groove 91023 of the fourth top fixed pulley group 914, then folds back and passes through the fourth lower fixed pulley groove 91023 of the first top fixed pulley group 911. The groove 91014 extends downward around the fourth movable pulley groove 944, then folds upward and wraps around the fourth upper fixed pulley groove 91024 on the first top fixed pulley group 911, and then passes sequentially through the fourth upper fixed pulley groove 91024 on the second top fixed pulley group 912, the third top fixed pulley group 913, and the fourth top fixed pulley group 914, before being fixed to the fourth upper fixed pulley groove 91024 of the fifth top fixed pulley group 915.

[0107] By cooperating with the first pull rope and the top fixed pulley group and the first movable pulley group, the U-shaped protective frame can be folded up.

[0108] The first top fixed pulley assembly 911, the second top fixed pulley assembly 912, the third top fixed pulley assembly 913, the fourth top fixed pulley assembly 914, and the fifth top fixed pulley assembly 915 are all equipped with rope-passing limiting plates 9103. The rope-passing limiting plates 9103 have four downward-passing limiting holes 91031 and four upward-passing limiting holes 91032 for the first pull rope 92 to pass through. 1 corresponds to the positions of the first lower fixed pulley groove 91011, the second lower fixed pulley groove 91012, the third lower fixed pulley groove 91013, and the fourth lower fixed pulley groove 91014, respectively. The four upper limiting holes 91032 correspond to the positions of the first upper fixed pulley groove 91021, the second upper fixed pulley groove 91022, the third upper fixed pulley groove 91023, and the fourth upper fixed pulley groove 91024, respectively.

[0109] In this way, by threading the pull rope through the limiting plate, the pull rope can be orderly and stably limited within the wheel groove, ensuring the normal use of the pull rope.

[0110] This utility model also provides an embodiment of a rear fixed pulley assembly 96, which includes:

[0111] Fixed pulley 961 is provided on the supporting and fixed front frame 2 or connected to the sealing plate 3 on the supporting and fixed front frame 2, and is located below the first pin 95;

[0112] Fixed pulley block 962 is installed on the supporting and fixed front frame 2 or connected to the sealing plate 3 on the supporting and fixed front frame 2, and is located below the second pin 100. Fixed pulley block 962 and fixed pulley 961 are arranged parallel to each other at intervals.

[0113] The second pull rope 101 is wound around the fixed pulley 961, the fixed pulley block 962, and the second movable pulley block 99.

[0114] See Figure 15 The present invention provides an earthquake refuge and protection system, comprising: the aforementioned earthquake refuge and protection frame, seismic wave detector 300, alarm 400, and controller 500, wherein the controller 500 is electrically connected to the seismic wave detector 300, the alarm 400, and the drive telescopic cylinder 8.

[0115] The seismic wave detector 300 is used to detect seismic waves and send the seismic wave signals to the controller 500;

[0116] The controller 500 controls the alarm 400 to issue an audible and visual alarm based on the seismic wave signal, and controls the drive telescopic cylinder 8 to move, causing multiple U-shaped protective frames 6 that are in a folded state to open in an orderly fan shape, forming a support protective cover 200 in the space above the support base frame 1.

[0117] This invention takes into account the uncertainty of earthquakes and the fact that people spend a third of their time in bed. It cleverly combines a protective frame with a bed. When the protective frame is folded up, it functions like a regular household bed. When unfolded, the protective frame forms a protective cover 2 meters long, 1.8 meters wide, and 1.5 meters high. Depending on the size and thickness of the materials used, the cover can withstand weights ranging from several tons to tens of tons, effectively resisting the impact and pressure of falling floor slabs and collapsing walls. People can lie down, sit, or even stand up inside, and it can accommodate 5 to 6 people simultaneously. Furthermore, the supporting base 1 and / or the supporting front frame 2 can be equipped with storage cabinets for storing emergency supplies such as bottled water, compressed biscuits, sugar, honey, blankets, quilts, flashlights, emergency toilets, cutting machines, and disassembly wrenches.

[0118] When an earthquake occurs, the seismic wave detector (which can also be connected to a seismic network early warning system) detects a high-speed P-wave signal and sends a signal command, triggering an alarm with a voice alert. Simultaneously, upon receiving the signal command, the controller immediately activates the drive cylinder of the protective frame, which can fully open or close the protective frame within 5-20 seconds (adjustable and configurable speed).

[0119] Based on the above-mentioned earthquake refuge and protection system, in another extended embodiment of this utility model, the protection system further includes an infrared sensor probe for detecting whether there is a person on the bed. The infrared sensor probe is electrically connected to the controller, wherein there are two controllers (which may be control handles), one placed inside the bed and the other outside the bed.

[0120] If the infrared sensor detects that no one is on the bed, it will stop immediately when the protective frame is halfway released, leaving the entrance open. If people are in the living room or kitchen at this time, they will quickly run to the bed after hearing the voice prompt of the audible and visual alarm. After getting into bed, they can start the drive cylinder to close the protective frame from the inside by operating the controller (which can be a control handle).

[0121] If the infrared sensor detects someone in the bed (possibly sleeping), the drive system will shut off the arch within 5 seconds.

[0122] If there are family members in the living room or kitchen at this time, and they come over and see that the safety frame is closed, they can open the safety frame through the controller (which can be a control handle) on the outside of the safety frame. After getting into bed, they can close the safety frame by operating the controller (which can be a control handle).

[0123] Based on the aforementioned earthquake refuge and protection system, in another extended embodiment of this utility model, a safety airbag is provided on the inner side of the earthquake refuge and protection frame. When the earthquake magnitude is large, the seismic wave detector will send a command to the controller to activate the safety airbag. At this time, the safety airbag will inflate rapidly, providing an all-round protective airbag to the inner side of the protection frame, so as to prevent people from being injured by hitting the protection frame during building collapse or violent shaking.

[0124] Of course, it is also equipped with a steel-cased power distribution cabinet (shaped like a bedside table), which contains a storage battery (protected by an iron casing to prevent spontaneous combustion or explosion) to provide emergency power in case of power grid failure.

[0125] After an earthquake, if you are not buried in the rubble, you can open the protective frame using the operating handle and walk out safely. In the event of a flood after an earthquake, the safety airbags can be used as a drift raft. If you are deeply buried in the rubble, the system's built-in battery can charge your phone, provide emergency lighting, and send distress signals. The emergency supplies in the lockers can ensure you can easily survive for more than ten days while awaiting rescue. If there is an escape route, but the protective frame is blocked by heavy objects, you can use a cutting machine or wire cutters to cut the ropes, disassemble the connectors, and loosen part of the protective frame to create an escape exit.

[0126] The drive telescopic cylinder 8 of this utility model is preferably a cylinder. The system is equipped with a compressor for supplying air to the cylinder and the airbag.

[0127] 1. Compressor control logic (handleCompressor function), with priorities from highest to lowest:

[0128] High-voltage protection (highest priority)

[0129] Conditions: High-pressure switch triggered (COMP_HIGH_PRESSURE pin is low) && compressor is running.

[0130] Action: Immediately stop the compressor and exit the function. This protection is effective in all modes.

[0131] Time Limit Judgment

[0132] Condition: The current time is between 8:00 PM and 8:00 AM the next day.

[0133] Action: Set the timeRestricted flag so that the compressor will not start automatically when the main power supply is normal during this period.

[0134] Main power supply normal mode (mainPowerNormal == true)

[0135] Remove the leak sign.

[0136] Manual mode timeout recovery: If the compressor stops due to manual operation and there is no other manual operation for 1 minute, the automatic control mode will be automatically restored (compressorAutoMode=true).

[0137] Low-voltage triggered startup (automatic mode core)

[0138] Conditions: Low-pressure switch triggered (COMP_LOW_PRESSURE is low) && compressor not running && leakage protection not triggered.

[0139] Startup judgment:

[0140] If the main power supply is faulty (mainPowerNormal == false), immediately start the compressor (to charge the cylinder).

[0141] If the main power supply is normal, it will only start during non-time-restricted periods (timeRestricted == false).

[0142] Leakage protection (only effective in case of main power failure)

[0143] Conditions: Main power supply failure && compressor running continuously for 1 hour.

[0144] Action: Triggers the leak protection flag (gCompressorLeak=true), stops the compressor, and sends a notification via Bluetooth. This flag will prevent the compressor from restarting automatically.

[0145] 2. Alarm handling logic (checkAlarmSignal & handleAlarms functions)

[0146] The alarm signal has two sources: a dedicated I / O pin and serial port 1. The processing logic follows the principle of "prioritizing strong alarms".

[0147] Signal detection:

[0148] IO detection: Continuously detect whether the ALARM_STRONG and ALARM_NORMAL pins are low.

[0149] Serial port detection: Parse the data of serial port 1 and look for specific instruction frames "03*" (powerful alarm) or "02*" (normal alarm).

[0150] Priority handling:

[0151] Once a strong alarm is detected, immediately override any ongoing regular alarms.

[0152] Normal alarms will only be triggered when there is no strong alarm.

[0153] Alarm action:

[0154] Standard alarm:

[0155] Control the bed to descend (meaning the protective frame opens).

[0156] If there is someone in the bed, the descent will stop after 60 seconds.

[0157] If no one is in bed, the alarmUnattendedDuration will continue to decrease (default 7 seconds) and then stop.

[0158] Powerful alarm:

[0159] Activate the airbag (RELAY_AIR) immediately and set it to automatically deactivate after 10 minutes.

[0160] The timing rules for controlling the bed to descend (meaning the protective frame to open) are the same as for ordinary alarms.

[0161] The airbag function will only be activated under a strong alarm.

[0162] 3. Manual control logic (handleManualControls function)

[0163] Manual operation has high priority, but an automatic recovery mechanism is provided for timeout.

[0164] Button response:

[0165] Compressor Start / Stop: Switches the compressor status and sets the control mode to manual.

[0166] Rise (referring to the retraction of the protective frame) / Stop / Lower (referring to the opening of the protective frame): Controls the movement of the bed. Any operation will set the mode to manual.

[0167] Emergency Stop: Highest priority. Immediately stops all outputs (compressor, bed, airbags) and clears alarm status.

[0168] Mode switching: Switch between manual and automatic modes. Switching back to automatic mode will automatically stop all motion.

[0169] Security restrictions:

[0170] Bed movement timeout: Whether rising or falling, the movement will automatically stop after 60 seconds to prevent jamming or motor overheating.

[0171] Manual mode timeout: If there is no manual operation within 10 minutes, the system will automatically switch back to automatic mode.

[0172] 4. Scheduled task logic (handleDailyRise function)

[0173] Conditions: Main power supply is normal && Current time is 19:00.

[0174] action:

[0175] Clear any alarm status.

[0176] Make sure the airbags are deactivated.

[0177] Control the bed to rise continuously for 60 seconds.

[0178] Send notifications via Bluetooth.

[0179] This is an action that is executed only once a day to prevent it from being triggered repeatedly within the 19:00 minute.

[0180] 5. Bluetooth communication logic (updateBLEStatus function)

[0181] Connection Management: When Bluetooth is disconnected, it automatically restarts broadcasting and waits for clients to connect.

[0182] Downlink data (APP->Device): Receives time information sent by the APP, calibrates the RTC; receives configuration parameters such as alarm duration.

[0183] Data upload (device -> APP): Circularly report complete system status information, including all sensor readings, relay status, mode flags, etc., to achieve remote monitoring.

Claims

1. A seismic refuge shield, characterized by, include: Support frame (1); The front support frame (2) is fixed at the bottom and the bottom of the front support frame (1) is fixed to the front end of the base support frame (1), thereby forming a bed frame; The base (4) consists of two bases arranged near the supporting and fixing front frame (2), which are respectively installed on the left and right sides of the bed frame; U-shaped protective frames (6) are stacked in multiple ways, and both ends of each U-shaped protective frame (6) are hinged to the corresponding base (4); Side hinges (7), the side hinges (7) are two sets arranged on the left and right sides of the U-shaped protective frame (6), each set of the side hinges (7) is hinged to the front frame side longitudinal beam (21) of the front frame (2) and the protective side longitudinal beam (61) of each U-shaped protective frame (6); Two drive telescopic cylinders (8) are respectively hinged to two front frame side longitudinal beams (21) to drive multiple U-shaped protective frames (6) to open or fold in an orderly fan shape, so as to form a support protective cover (200) or to make the support protective cover (200) close in the space above the support base frame (1).

2. The seismic refuge shelter frame of claim 1, wherein, The base (4) is fixed on the front frame side longitudinal beam (21) and the top longitudinal beam (11) of the support base frame (1). The telescopic end of the drive telescopic cylinder (8) is hinged to the U-shaped protective frame (6) away from the support fixed front frame (2). When the drive telescopic cylinder (8) is activated, it can drive multiple U-shaped protective frames (6) to open or fold in an orderly fan shape, so as to form a support protective cover (200) in the space above the support base frame (1) or to make the support protective cover (200) close.

3. The seismic refuge shelter frame of claim 1, wherein, It also includes a U-shaped support movable rear frame (5), the ends of the two rear frame side longitudinal beams (51) of the U-shaped support movable rear frame (5) are respectively hinged to the two top longitudinal beams (11) of the support base frame (1), and the two rear frame side longitudinal beams (51) are respectively hinged to the two bases (4), and the bases (4) are hinged to the top longitudinal beams (11); The two ends of the side hinge (7) are respectively hinged to the front frame side longitudinal beam (21) and the rear frame side longitudinal beam (51); The telescopic end of the drive telescopic cylinder (8) is hinged to the rear frame side longitudinal beam (51); The telescopic end of the drive telescopic cylinder (8) drives the U-shaped support movable rear frame (5) to swing down or up, and then drives multiple U-shaped protective frames (6) to open or fold in an orderly fan shape through the side hinge (7), so as to form a support protective cover (200) in the space above the support base frame (1) or to make the support protective cover (200) close.

4. The seismic refuge shelter frame of claim 3, wherein, The base (4) includes: A rocker arm (41), one end of which is hinged to the front side of the top longitudinal beam (11); Mounting base (42), the front and rear ends of the mounting base (42) are respectively hinged to the end of the rocker arm (41) and the rear frame side longitudinal beam (51), the top of the mounting base (42) has a mounting groove (421), and the end of the protective side longitudinal beam (61) of each U-shaped protective frame (6) is sequentially hinged to the groove side wall of the mounting groove (421).

5. The seismic refuge shelter frame of claim 3, wherein, Each of the side hinges (7) includes: a first chain plate assembly (71) and a second chain plate assembly (72); The first chain plate assembly (71) includes a first chain plate (711) and a second chain plate (712). One end of the first chain plate (711) is hinged to the front frame side longitudinal beam (21), and one end of the second chain plate (712) is hinged to the other end of the first chain plate (711). The second chain plate assembly (72) includes: a plurality of third chain plates (721) and a plurality of fourth chain plates (722) arranged alternately, wherein the plurality of third chain plates (721) and the plurality of fourth chain plates (722) are connected end to end in sequence to form a hinge string, and the third chain plates (721) and the fourth chain plates (722) are both hinged to the protective side longitudinal beam (61); wherein the third chain plates (721) located at the front end of the hinge string are all hinged to the other end of the second chain plate (712) and the front frame side longitudinal beam (21), and the fourth chain plates (722) located at the rear end of the hinge string are hinged to the rear frame side longitudinal beam (51).

6. A seismic refuge shelter frame according to claim 5, wherein, The second chain plate assembly (72) further includes a plurality of upper return springs (723) located on the upper side of the hinge string and a plurality of lower return springs (724) located on the lower layer of the hinge string. One end of two adjacent upper return springs (723) and lower return springs (724) are respectively staggered and hinged to the protective crossbeams (62) and the protective side longitudinal beams (61) of two adjacent U-shaped protective frames (6). The other ends of two adjacent upper return springs (723) and lower return springs (724) are respectively staggered and hinged to two adjacent fourth chain plates (722). Among them, the upper return springs (723) on the fourth chain plate (722) closer to the second chain plate (712) are hinged to the front frame side longitudinal beam (21). After the multiple U-shaped protective frames (6) are opened in an orderly fan shape, the hinge string is straightened under the action of the upper and lower reset springs, and the hinge string as a whole presents a rigid support to increase the load-bearing capacity of the overall protective frame.

7. A seismic refuge shelter frame according to any one of claims 3-5, characterized in that, It also includes an auxiliary take-up and take-down component (9), which includes: Top fixed pulley group (91), there are multiple top fixed pulley groups (91), which are respectively set on the protective crossbeams (62) of multiple U-shaped protective frames (6) and on the front frame crossbeam (22) of the supporting and fixed front frame (2); The first pull rope (92) is wound around the top fixed pulley group (91), and one end of the first pull rope (92) is fixedly connected to the protective beam (62) near the U-shaped support movable rear frame (5), and the other end is fixedly connected to the top fixed pulley group (91) near the U-shaped support movable rear frame (5). A first movable pulley seat (93) is provided with a first movable pulley assembly (94) and a first pin (95), and the first pull rope (92) is wound around the first movable pulley assembly (94); The rear fixed pulley assembly (96) is provided on the front support frame (2) or connected to the sealing plate (3) on the front support frame (2); An auxiliary spring (97) is connected at one end to the front support frame (2) or to the sealing plate (3) on the front support frame (2). The second movable pulley seat (98) is fixedly connected to the other end of the auxiliary spring (97). The second movable pulley seat (98) is provided with a second movable pulley group (99) and a second pin (100). The second pull rope (101) is wound around the rear fixed pulley group (96) and the second movable pulley group (99), and the two ends of the second pull rope (101) are fixedly connected to the first pin (95) and the second pin (100) respectively.

8. An earthquake refuge and protective frame according to claim 7, characterized in that, The first movable pulley group (94) is provided with a first movable pulley groove (941), a second movable pulley groove (942), a third movable pulley groove (943), and a fourth movable pulley groove (944) in sequence; The plurality of top fixed pulley groups (91) are respectively a first top fixed pulley group (911) disposed on the front frame crossbeam (22) and a second top fixed pulley group (912), a third top fixed pulley group (913), a fourth top fixed pulley group (914), and a fifth top fixed pulley group (915) disposed at intervals on the corresponding protective crossbeams (62). (915) is provided with a lower fixed pulley group (9101) and an upper fixed pulley group (9102). The lower fixed pulley group (9101) is provided with a first lower fixed pulley groove (91011), a second lower fixed pulley groove (91012), a third lower fixed pulley groove (91013), and a fourth lower fixed pulley groove (91014) in sequence. The upper fixed pulley group (9102) is provided with a first upper fixed pulley groove (91021), a second upper fixed pulley groove (91022), a third upper fixed pulley groove (91023), and a fourth upper fixed pulley groove (91024) in sequence. One end of the first pull rope (92) is fixedly connected to the protective crossbeam (62) near the U-shaped support movable rear frame (5), and the other end passes sequentially through the first lower fixed pulley groove (91011) on the fifth top fixed pulley group (915), the fourth top fixed pulley group (914), the third top fixed pulley group (913), the second top fixed pulley group (912), and the first top fixed pulley group (911), then extends downward around the first movable pulley groove (941) and then folds back upward around the first The first upper fixed pulley groove (91021) on the top fixed pulley assembly (911) passes around the first upper fixed pulley groove (91021) of the second top fixed pulley assembly (912), then folds back through the second lower fixed pulley groove (91012) of the first top fixed pulley assembly (911), extends downward around the second movable pulley groove (942), then folds back upward around the second upper fixed pulley groove (91022) on the first top fixed pulley assembly (911), and passes around the third top fixed pulley assembly (913). The second upper fixed pulley groove (91022) folds back through the third lower fixed pulley groove (91013) of the first top fixed pulley group (911), extends downward around the third movable pulley groove (943), then folds back upward around the third upper fixed pulley groove (91023) on the first top fixed pulley group (911), and then around the third upper fixed pulley groove (91023) of the fourth top fixed pulley group (914), before folding back through the fourth lower fixed pulley groove of the first top fixed pulley group (911). The groove (91014) extends downward around the fourth movable pulley groove (944) and then folds back upward around the fourth upper fixed pulley groove (91024) on the first top fixed pulley group (911). It then passes sequentially through the fourth upper fixed pulley groove (91024) on the second top fixed pulley group (912), the third top fixed pulley group (913), and the fourth top fixed pulley group (914) before being fixed to the fourth upper fixed pulley groove (91024) of the fifth top fixed pulley group (915).

9. A seismic refuge shelter frame according to claim 8, wherein, The first top fixed pulley group (911), the second top fixed pulley group (912), the third top fixed pulley group (913), the fourth top fixed pulley group (914), and the fifth top fixed pulley group (915) are all provided with a rope-passing limiting plate (9103). The rope-passing limiting plate (9103) has four lower passing limiting holes (91031) and four upper passing limiting holes (91032) for the first pull rope (92) to pass through. The four lower passing limiting holes (91031) are provided with a rope-passing limiting plate (91031) and a rope-passing limiting plate (91032) for the first pull rope (912) to pass through. 31) The four upper through-holes (91032) correspond to the positions of the first lower fixed pulley groove (91011), the second lower fixed pulley groove (91012), the third lower fixed pulley groove (91013), and the fourth lower fixed pulley groove (91014), respectively.

10. A seismic refuge protection system, characterized in that, include: The earthquake refuge and protection frame, seismic wave detector (300), alarm (400), and controller (500) as described in any one of claims 1-9, wherein the controller (500) is electrically connected to the seismic wave detector (300), the alarm (400), and the drive telescopic cylinder (8); The seismic wave detector (300) is used to detect seismic waves and send the seismic wave signals to the controller (500); The controller (500) controls the alarm (400) to sound an alarm based on the seismic wave signal, and controls the drive telescopic cylinder (8) to move, so that the multiple U-shaped protective frames (6) in the folded state can be opened in an orderly fan shape to form the support protective cover (200) in the space above the support base frame (1).

Images