Liftable civil air defense shelter

Abstract

The liftable civil air defense shelter is placed on a common parking space without affecting parking and comprises a shell and a bottom plate, and the shell is of a helmet-shaped structure with an opening in the lower end; the bottom plate is horizontally installed at the opening of the shell, and a closed sheltering space is defined by the bottom plate and the shell; a safety door is arranged on the bottom plate, and a folding ladder is mounted at the safety door; at least four telescopic supporting legs are installed on the lower end face of the bottom plate, the four telescopic supporting legs can jack or descend the bottom plate, and when the telescopic supporting legs are in an extension state, parking space is reserved between the bottom plate and the telescopic supporting legs; when the telescopic supporting legs are in a contraction state, the edge of the shell abuts against the ground. A liftable shelter structure is arranged, and a safety door is formed in the bottom of the shelter; the shelter is jacked at ordinary times, so that parking space is not occupied; and in wartime, the shelter is put down to block the safety door, so that space waste is avoided, and the safety performance of the shelter is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of civil air defense engineering, and particularly to a liftable civil air defense shelter. Background Art

[0002] A civil air defense shelter is a type of civil air defense facility, mainly used for civil air defense during wartime, which can effectively resist the explosion shock, fragment damage, etc. brought by air raids, and protect the safety of personnel and important equipment. It can also provide a safe shelter space for the affected people during natural disasters such as earthquakes, floods, and fires, and can store living materials and important strategic materials.

[0003] However, due to different investments in civil air defense facilities in different regions, there is a general lack of corresponding shelter places in remote rural areas and old urban areas. And in many regions, especially in the middle and lower reaches of the Yangtze River, due to the relatively high groundwater level, it is very difficult for individuals to expand underground shelters.

[0004] Based on the above technical problems, the present application proposes a liftable civil air defense shelter. Summary of the Invention

[0005] The purpose of the present invention is to provide a liftable civil air defense shelter to solve the technical problems mentioned in the background art. The purpose of the present invention is achieved through the following technical solutions: A liftable civil air defense shelter is placed on a normal parking space without affecting parking, and includes a housing and a bottom plate. The housing is a steel helmet-shaped structure with an open lower end, and a camouflage layer is provided on the outside of the housing; the bottom plate is horizontally installed at the opening of the housing, and the bottom plate and the housing enclose a closed shelter space; a safety door is provided on the bottom plate, and a folding ladder is installed at the safety door; at least four telescopic legs are installed on the lower end surface of the bottom plate, and the four telescopic legs can lift or lower the bottom plate. When the telescopic legs are in the extended state, a parking space is reserved between the bottom plate and the telescopic legs; when the telescopic legs are in the contracted state, the edge of the housing abuts against the ground.

[0006] Furthermore, auxiliary legs are installed on the side surface of the telescopic legs. The upper end of the auxiliary leg is hinged to the upper end of the telescopic leg, and the lower end of the auxiliary leg is hinged to the lower end of the telescopic leg; the auxiliary leg includes a first leg and a second leg. A long circular connecting groove is provided on the side of the first leg close to the telescopic leg, and a connecting shaft is provided on the side of the second leg close to the telescopic leg. The connecting shaft is inserted into the connecting groove, so that the first leg and the second leg can be flipped relative to each other.

[0007] Furthermore, a clamping block is provided at the end of the first leg close to the second leg, and a clamping groove cooperating with the clamping block is provided at the end of the second leg close to the first leg; a limiting hole is opened on the side wall of the clamping groove, and a long circular limiting groove cooperating with the limiting hole is opened on the clamping block; a limiting pin is detachably installed in the limiting hole.

[0008] Furthermore, a guiding hole is formed in the side wall of the clamping groove, and the guiding hole is located on the side of the second leg close to the connecting shaft.

[0009] Furthermore, reinforcing ribs are arranged in the middle of the base, and the reinforcing ribs extend along the length direction of the base; a sealing plate is installed above the safety door, a sealing door is arranged on the sealing plate, and the folding ladder can be stored between the bottom plate and the sealing plate.

[0010] Furthermore, a hydraulic cylinder is installed on the telescopic leg, and a hydraulic drive system is installed on the upper side of the bottom plate. The hydraulic drive system is connected to the hydraulic cylinder through a hydraulic pipeline.

[0011] Furthermore, an installation platform is arranged on the upper part of the outer shell. The installation platform is lower than the highest point of the outer shell. An air treatment device is installed on the installation platform, and the air treatment device is communicated with the inside of the outer shell; a protective cover is installed outside the installation platform, and heat dissipation holes are formed in the protective cover.

[0012] Furthermore, a battery compartment is arranged on the bottom plate, and the battery compartment is located between the bottom plate and the sealing plate; a heat preservation layer is arranged between the sealing plate and the bottom plate.

[0013] Furthermore, a water storage tank, a toilet and a sewage tank are arranged on the bottom plate. The water storage tank is connected to the water inlet of the toilet, and the sewage outlet of the toilet is connected to the sewage tank.

[0014] Furthermore, an inflatable cushion, a medicine box, a fire extinguisher and an oxygen cylinder are also arranged on the bottom plate.

[0015] The technical solution provided by the embodiment of the present application has at least the following technical effects or advantages: 1. By providing a liftable shelter structure and opening a safety door at the bottom of the shelter; lifting the shelter usually, so as not to occupy the parking space; lowering the shelter during wartime to block the safety door, which not only avoids the waste of space, but also improves the safety performance of the shelter.

[0016] 2. By adding a follow-up auxiliary leg on the side of the telescopic leg, the telescopic leg can be supported assistingly, avoiding the failure of the telescopic leg and improving the safety of the telescopic leg. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments recorded in the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 It is a schematic diagram of the appearance of the shelter in the embodiment of the present application; Figure 2 Schematic diagram of the shelter structure according to an embodiment of the present application; Figure 3 Schematic diagram of the outer shell structure according to an embodiment of the present application; Figure 4 Schematic diagram of the internal structure of the shelter according to an embodiment of the present application; Figure 5 Schematic diagram of the connection between the telescopic leg and the auxiliary leg according to an embodiment of the present application; Figure 6 Schematic diagram of the auxiliary leg structure according to an embodiment of the present application; Figure 7 is Figure 6 partial enlarged view of; Figure 8 Schematic diagram of the retracted state of the auxiliary leg according to an embodiment of the present application.

[0019] Reference numerals: 1, outer shell; 11, mounting platform; 12, escape hole; 13, protective cover; 2, bottom plate; 21, entrance; 22, safety door; 23, folding ladder; 24, sealing plate; 25, sealing door; 26, battery compartment; 27, partition; 3, telescopic leg; 31, foot plate; 4, auxiliary leg; 41, first leg; 411, connecting groove; 412, clamping block; 413, limiting groove; 42, second leg; 421, connecting shaft; 422, clamping groove; 423, guiding hole; 43, limiting pin; 5, cleaning device; 51, water storage tank; 52, toilet; 53, sewage tank; 6, hydraulic drive device; 61, hydraulic oil tank; 62, hydraulic pump; 7, air treatment device; 71, external unit; 72, air conditioner; 73, fresh air filtration system; 8, first aid supplies; 81, medical kit; 82, fire extinguisher; 83, oxygen cylinder. Detailed implementation manners

[0020] To further elaborate on the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the following, in conjunction with the accompanying drawings and preferred embodiments, details the specific implementation manners, structures, features, and their effects of the present invention as follows.

[0021] As Figure 1 、 Figure 2A liftable civil air defense shelter as shown, which is placed on an ordinary parking space without affecting parking. It includes a housing 1, a bottom plate 2, and four telescopic legs 3 installed on the lower side of the bottom plate 2. The housing 1 is in the shape of a steel helmet with an open bottom end. The bottom plate 2 is horizontally installed at the open end of the lower end of the housing 1, and the bottom plate 2 and the housing 1 enclose a closed shelter space. The four telescopic legs 3 can lift or lower the bottom plate 1, thereby driving the shelter to rise or fall. When the telescopic legs 3 are in the extended state, the shelter is in the high position. At this time, a parking space is reserved between the lower side of the bottom plate 2 and the telescopic legs 3. When the telescopic legs 3 are in the contracted state, the shelter is in the low position. At this time, the edge of the housing 1 abuts against the ground, making the entire shelter in a protective state.

[0022] As Figures 1-3 shown, the housing 1 is designed in the shape of an elongated steel helmet. The all-curved surface design on this shape can disperse strong impacts from all angles around and at the top, and has been fully verified in products such as bunkers, hangars, and helmets. The housing 1 is precast with C140 steel fiber concrete about 20 cm thick. The strength and anti-strike ability of this material exceed those of steel plates of the same thickness, and it is known as "concrete that cannonballs can't penetrate"! It can resist high-yield aerial bomb attacks at a specific thickness and has been in service in important facilities such as hangars, runways, and bunkers for many years. And with the successive emergence of products with C200 and C220 strengths, the C140 grade has been commercially used and has a relatively high cost performance. Preferably, the housing 1 can also be replaced and upgraded with more cost-effective high-strength materials when they appear.

[0023] As Figure 2 、 Figure 4 shown, the bottom plate 2 is made of a 2-cm-thick steel plate, and the bottom of the steel plate is strengthened with a polyurea material. An inward concave step is provided at the opening of the housing 1, and the bottom plate 2 is clamped at the step. Embedded parts are installed in the housing 1, and the bottom plate 2 is fixed to the embedded parts by welding to ensure the reliability of the connection between the bottom plate 2 and the housing 1. Preferably, V-shaped reinforcing ribs are formed on the bottom plate 2 by stamping, and the reinforcing ribs are arranged along the central axis of the length direction of the bottom plate 2. The design of the reinforcing ribs can not only increase the structural strength of the bottom plate 2 but also buffer the bottom plate 2.

[0024] As Figure 2 、 Figure 4 shown, an access opening 21 is provided on the left side of the bottom plate 2, and a downward-opening safety door 22 is installed at the access opening 21. The safety door 22 is made of a 1-cm-thick steel plate, and a folding ladder 23 is installed on the safety door 22. Preferably, both the safety door 22 and the folding ladder 23 are remotely controlled electric structures. When the shelter is in the high position, the safety door 22 can be remotely controlled to open and the folding ladder 23 can be lowered to facilitate personnel entry.

[0025] As Figure 2 、 Figure 4As shown in the figure, a sealing plate 24 is installed on the left side of the bottom plate 2. A sealing door 25 that coincides with the inlet 21 in the vertical direction is installed on the sealing plate 24. The sealing door 25 is made of a steel plate with a thickness of 1 cm, and a sealing ring is installed on the edge of the sealing door 25 to prevent flue gas from entering. When the safety door 22 is closed, the folding ladder 23 is stored between the bottom plate 2 and the sealing plate 24. An inflatable bed can be placed above the sealing plate 24 as a rest area. On the one hand, the inflatable bed can be used as an emergency air reserve, and on the other hand, it can play a buffering role when an explosion occurs outside.

[0026] A battery compartment 26 is also arranged between the sealing plate 24 and the bottom plate 2. The battery compartment 26 is located around the inlet 21, and two groups of 24V high-power lithium battery packs are installed in the battery compartment 26. Rock wool fireproof insulation layers with a thickness of 4 cm and A-level fireproof rating are laid above the bottom plate 2 and below the sealing plate 24. A steel or aluminum alloy chequered plate with a thickness of 0.3 cm is laid above the insulation layer of the bottom plate 2 for leveling and anti-slip. The setting of the insulation layer can reduce the influence of the external temperature on the internal temperature of the shelter. Arranging the battery compartment 26 below the sealing plate 24 can prevent the battery pack from malfunctioning and burning, threatening the safety of the personnel inside the shelter.

[0027] As Figure 2 、 Figure 4 shown in the figure, a partition plate 27 is installed on the right side of the shelter, thus separating an equipment room on the right side of the partition plate 27. A cleaning device 5, a hydraulic drive device 6, and an air treatment device 7 are installed in the equipment room. The cleaning device 5 includes a water storage tank 51, a toilet 52, and a sewage tank 53. The sewage tank 53 is installed on the bottom plate 2, and both the water storage tank 51 and the toilet 52 are installed on the sewage tank 53. The water storage tank 51 is connected to the water inlet of the toilet 52, the sewage outlet of the toilet 52 is connected to the sewage tank 53, and a sewage outlet is installed at the bottom of the sewage tank 53. The sewage outlet is connected to the external sewage pipeline through a pipe and a hose. Among them, the capacity of the water storage tank 51 is 250L, the capacity of the sewage tank 53 is 350L, and the toilet 52 is an integrated toilet with a capacity of 3 - 5L and a handwashing function. The pipes of the cleaning device 5 are made of stainless steel with a thickness ranging from 1.2 to 1.5 mm.

[0028] The hydraulic drive device 6 includes a hydraulic oil tank 61 and a hydraulic pump 62. The hydraulic pump 62 is a hydraulic pump driven by a 5500w DC motor. The hydraulic pump 62 is electrically connected to the 24v high-power lithium battery pack to supply power to the hydraulic pump 62. The telescopic legs 3 are driven by a hydraulic cylinder. The hydraulic pump 62 is connected to the hydraulic cylinder through a pipe to realize the extension or contraction of the telescopic legs 3.

[0029] As Figures 1-4As shown in the figure, the air handling device 7 includes an outdoor unit 71, an air conditioner 72, and a fresh air filtration system 73. The air conditioner 72 is installed on the left side of the partition 27, and the fresh air filtration system 73 is installed on the right side of the partition 27. An installation platform 11 is provided on the right side of the upper part of the housing 1. The installation platform 11 is lower than the highest point of the housing 1. The outdoor unit 71 is fixed on the installation platform 11. Both the air conditioner 72 and the fresh air filtration system 73 are connected to the outdoor unit 71 to achieve the exchange and temperature control of the air inside the shelter. A protective cover 13 is installed outside the outdoor unit 71 to protect the outdoor unit 71. Heat dissipation holes are provided on the protective cover 13 to achieve the heat dissipation of the outdoor unit 71. Among them, devices such as antennas are also installed on the installation platform 11 for information interaction. Preferably, the air conditioner 72 is a 200 - 500w variable frequency split parking air conditioner.

[0030] Preferably, an escape hole 12 is further installed at the front end of the housing 1. An escape door that can only be opened from the inside is installed at the escape hole 12. When an emergency occurs inside the shelter, the internal personnel can escape urgently through the escape hole 12. Cameras are installed at the bottom and side of the housing 1 to observe the external situation of the shelter.

[0031] A camouflage layer is arranged on the outside of the housing 1. The camouflage layer can be decorated into a rockery, boulder, business vehicle, square bin, etc. according to customer needs or the environment using paint, stickers or other lightweight materials for camouflage.

[0032] As Figure 2 、 Figure 4 shown in the figure, other first aid supplies 8 are also arranged on the bottom plate 2, such as a first aid kit 81, a fire extinguisher 82, an oxygen cylinder 83, etc. Necessary living supplies such as self - heating rice, compressed dry rations, and pure water are also placed to ensure the basic living needs of 3 - 4 people for 72 consecutive hours.

[0033] In addition, when the shelter can be directly powered by an external power supply or a charging pile, directly supplied with tap water, directly connected to the sewer through a bottom sewage hose, and the living supplies can be replenished regularly, it can be on duty for 24 hours throughout the year and can also be used as a temporary residence.

[0034] As Figures 5-8 shown in the figure, a foot plate 31 is hinged at the lower end of the telescopic leg 3. An auxiliary leg 4 is installed on the side of the telescopic leg 3. The length of the auxiliary leg 4 is less than the length of the telescopic leg 3. The upper end of the auxiliary leg 4 is hinged to the lower end surface of the bottom plate 2, and the lower end of the auxiliary leg 4 is hinged to the foot plate 31.

[0035] As Figures 5-8As shown, the auxiliary outrigger 4 includes a first outrigger 41 and a second outrigger 42. On one side of the first outrigger 41 close to the telescopic outrigger 3, an oblong connecting groove 411 is fixed. On one side of the second outrigger 42 close to the telescopic outrigger 3, a connecting shaft 421 is fixed. The connecting shaft 421 is inserted into the connecting groove 411, enabling the first outrigger 41 and the second outrigger 42 to flip relative to each other. As Figure 5 shown, when the telescopic outrigger 3 extends, the first outrigger 41 and the second outrigger 42 open; when the telescopic outrigger 3 contracts, the first outrigger 41 and the second outrigger 42 fold.

[0036] As Figure 6 、 Figure 7 shown, at the end of the first outrigger 41 close to the second outrigger 42, a clamping block 412 is fixed. At the end of the second outrigger 42 close to the first outrigger 41, a clamping groove 422 matching the clamping block 412 is provided. When the telescopic outrigger 3 reaches its longest, the projection of the clamping block 412 is within the clamping groove 422. At this time, by driving the telescopic outrigger 3 to descend, the clamping block 412 can be inserted into the clamping groove 422, enabling the second outrigger 42 to support the first outrigger and realizing the auxiliary support for the shelter.

[0037] As Figure 6 、 Figure 7 shown, a limiting hole is provided on the side wall of the clamping groove 422, and a limiting pin 43 is detachably installed in the limiting hole. An oblong limiting groove 413 matching the limiting hole is provided on the clamping block 412. When the clamping block 412 is inserted into the clamping groove 422, by inserting the limiting pin 43 into the limiting hole, the first outrigger 41 and the second outrigger 42 can be connected, ensuring the reliability of the auxiliary outrigger 4.

[0038] Among them, a guiding hole 423 is also provided on the side wall of the clamping groove 422, and the guiding hole 423 is located on the side of the second outrigger 42 close to the connecting shaft 421. When the shelter needs to be lowered to the ground, the limiting pin 43 is inserted into the guiding hole 423. At this time, when the clamping block 412 moves to the guiding hole 423, the limiting pin 43 will push the clamping block 412 outwards, causing the first outrigger 41 and the second outrigger 42 to fold and preventing jamming. If the limiting pin 43 jams during downward movement, the telescopic outrigger 3 can be driven to extend to separate the clamping block 412 from the limiting pin 43.

[0039] Since the current national regulations stipulate that the standard size of a parking space for ordinary household cars is 5.3 meters in length and 2.5 meters in width, and in fact, the sizes of ordinary parking spaces in general communities are slightly reduced. Combining with the national requirements for the sizes of goods transported by ordinary trucks entering the city, after multiple on-site measurements and simulations, the preliminary standard size of this product is set to be approximately 5 meters in length, approximately 2.4 meters in width, and approximately 2.5 meters in height. This can not only ensure that the length and width meet the requirements for placement and transportation, but also ensure that the internal net height can support normal living.

[0040] Meanwhile, considering that the height of ordinary household cars is generally between 1.50 and 1.65 meters, the maximum length of the retractable legs that can be hidden between the two legs of this product is 2.3 meters, and below two meters belongs to low altitude, etc., the lifting limit of the hydraulic cylinder in the standard version is designed to be about 1.8 meters. After being fully lifted, it can just meet the parking of ordinary household cars below.

[0041] In the later stage, according to the market situation, consider adding a MINI version with a length of about 4.8 meters, a width of about 2.2 meters, and a lifting limit of 1.8 meters suitable for micro parking spaces, and a PLUS version with a length of about 6 meters, a width of about 3 meters, and a lifting limit of about 2.5 meters for parking on SUV parking spaces.

[0042] Preferably, a forced start switch is also installed inside the protective cover 13 outside the housing 1. To prevent accidental descent caused by misoperation from bringing personal and property losses, when a person without the ability to move is trapped, professional installers can be contacted to turn on the external power supply of the protective cover 13 for forced start. If frequent lifting and lowering is required without anyone on duty, a remote control device can be additionally installed on the forced start circuit inside the cover.

[0043] Screw holes for installing a breeze power generation bracket are reserved at the top of the housing 1, which can be used as a remote-controlled close-in weapon platform when necessary.

[0044] The working principle of the embodiment of this application is as follows: In normal times, the shelter is lifted to the highest position by the telescopic legs and then lowered, so that the clamping block is inserted into the clamping groove, and the limit pin is inserted into the limit groove to lock the first leg and the second leg, and the auxiliary leg supports the shelter to avoid the shelter descending uncontrollably due to the damage of the hydraulic cylinder, which may damage the vehicle and endanger the safety of personnel; when parking normally for a long time, the pressure can be appropriately relieved to let the auxiliary leg share part of the pressure, so as to increase the service life of the oil cylinder and reduce the risk of cylinder explosion.

[0045] In wartime, the limit pin is pulled out of the limit groove, the shelter is lifted to the highest position by the telescopic legs, and then the limit pin is inserted into the guide hole, and then the telescopic legs are driven to contract. At this time, when the clamping block moves to the guide hole, the limit pin will push the clamping block outwards, so that the first leg and the second leg are folded, and the contraction of the telescopic legs will not be interfered. When the shelter descends to the lowest position, the housing buckles the protective door inside to form a sealed and strong shelter space.

[0046] For ventilation and air change, the fresh air filtration system is used in normal times. In wartime or in case of a biochemical attack, it can be closed inside, and oxygen cylinders or the air in the release cushions are used for supply, and the data of the internal and external air is monitored by the gas sensor at all times.

[0047] The technical solution provided by the embodiment of this application has at least the following technical effects or advantages: 1. By setting up a liftable shelter structure and opening a safety door at the bottom of the shelter; during peacetime, the shelter is lifted to avoid occupying the parking space; during wartime, the shelter is lowered to block the safety door, which not only avoids waste of space but also improves the safety performance of the shelter.

[0048] 2. By adding auxiliary legs that follow along on the side of the telescopic legs, the telescopic legs can be supported assistingly to avoid the failure of the telescopic legs and improve the safety of the telescopic legs.

[0049] The above are only the preferred embodiments of the present invention and do not impose any formal restrictions on the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments by using the disclosed technical content within the scope of the technical solution of the present invention. However, as long as it does not depart from the content of the technical solution of the present invention, any brief modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. An elevating civil air defense shelter, characterized in that, It is placed on a regular parking space without affecting parking, including a housing and a bottom plate. The housing is a steel helmet-shaped structure with an open bottom end, and a camouflage layer is provided on the outer side of the housing; the bottom plate is horizontally installed at the opening of the housing, and the bottom plate and the housing enclose a closed shelter space; a safety door is provided on the bottom plate, and a folding ladder is installed at the safety door; at least four telescopic legs are installed on the lower end surface of the bottom plate, and the four telescopic legs can lift or lower the bottom plate. When the telescopic legs are in the extended state, a parking space is reserved between the bottom plate and the telescopic legs; when the telescopic legs are in the contracted state, the edge of the housing abuts against the ground.

2. The liftable civil air defense shelter according to claim 1, characterized in that, An auxiliary leg is installed on the side of the telescopic leg. The upper end of the auxiliary leg is hinged to the upper end of the telescopic leg, and the lower end of the auxiliary leg is hinged to the lower end of the telescopic leg; the auxiliary leg includes a first leg and a second leg. A long circular connecting groove is provided on the side of the first leg close to the telescopic leg, and a connecting shaft is provided on the side of the second leg close to the telescopic leg. The connecting shaft is inserted into the connecting groove, so that the first leg and the second leg can be flipped relative to each other.

3. The liftable civil air defense shelter according to claim 2, characterized in that, A clamping block is provided at the end of the first leg close to the second leg, and a clamping groove cooperating with the clamping block is provided at the end of the second leg close to the first leg; a limiting hole is provided on the side wall of the clamping groove, and an oblong limiting groove cooperating with the limiting hole is provided on the clamping block; a limiting pin is detachably installed in the limiting hole.

4. The liftable civil air defense shelter according to claim 3, characterized in that, A guiding hole is provided on the side wall of the clamping groove, and the guiding hole is located on the side of the second leg close to the connecting shaft.

5. The liftable civil air defense shelter according to claim 1, characterized in that, Reinforcing ribs are provided in the middle of the base, and the reinforcing ribs extend along the length direction of the base; a sealing plate is installed above the safety door, and a sealing door is provided on the sealing plate. The folding ladder can be stored between the bottom plate and the sealing plate.

6. The liftable civil air defense shelter according to claim 1, wherein, A hydraulic cylinder is installed on the telescopic leg, and a hydraulic drive system is installed on the upper side of the bottom plate. The hydraulic drive system is connected to the hydraulic cylinder through a hydraulic pipeline.

7. The liftable civil air defense shelter according to claim 1, characterized in that, An installation platform is provided on the upper part of the housing. The installation platform is lower than the highest point of the housing. An air treatment device is installed on the installation platform, and the air treatment device is communicated with the inside of the housing; a protective cover is installed on the outside of the installation platform, and heat dissipation holes are provided on the protective cover.

8. The liftable civil air defense shelter according to claim 1, wherein, A battery compartment is provided on the bottom plate, and the battery compartment is located between the bottom plate and the sealing plate; a heat preservation layer is provided between the sealing plate and the bottom plate.

9. The liftable civil air defense shelter according to claim 1, wherein A water storage tank, a toilet and a sewage tank are provided on the bottom plate. The water storage tank is connected to the water inlet of the toilet, and the sewage outlet of the toilet is connected to the sewage tank.

10. The liftable civil air defense shelter according to claim 1, characterized in that, An air cushion, a medicine box, a fire extinguisher and an oxygen cylinder are also provided on the bottom plate.

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