CN104751581A - Intelligent electric cabinet with safety protection system - Google Patents

Abstract

The present invention is an intelligent power cabinet with a safety guarantee system, the safety guarantee system includes a door closing switch arranged on the box body to identify user information; a door magnet for detecting whether the door panel is normally opened; The camera installed in the power cabinet; when the door panel is detected to be opened abnormally, the microcontroller that triggers the camera to take pictures; and the microcontroller that is connected to the door panel and sends an alarm an alarm; and a communication device connected with the microcontroller to send warning information to the background terminal.

Description

Intelligent power cabinet with security system

technical field

The invention relates to an intelligent power cabinet with a safety guarantee system.

Background technique

With the continuous development of social economy and the increasing level of electrification, the installation and use of power facilities has spread to every corner of the society and has become an essential facility for urban and rural production and operation. Outdoor power cabinets are often used in power systems or telecommunication systems for placing power equipment or professional power wiring. It is mostly used in power systems and other aspects of large-scale projects.

The inventors found that currently, because the outdoor power cabinets are installed outdoors and there are a large number of them, maintenance and inspection personnel cannot maintain multiple cabinets at the same time, resulting in frequent theft of the power cabinets, and furthermore, the power system cannot operate normally and power outages occur.

In addition, some cabinets will place a set of monitors, keyboards and mice through a KVM switch (KVM) to maintain servers and other equipment in the cabinet, but such layout settings waste the internal space of the cabinet. The integrated KVM can save space but is expensive. It is too high. In addition, when inspecting the equipment in the cabinet, the cabinet door must be opened to open the display to perform related operations and browse the content of the display interface. When there are many cabinets in the computer room, time is wasted and the operation effect is affected.

Contents of the invention

In view of the above problems, the present invention provides an intelligent power cabinet with a security system that has both a warning device and an alarm system, which effectively reduces the frequency of outdoor power cabinet theft, and can display the situation inside the cabinet without opening the cabinet door.

In order to achieve the purpose of the above invention, the present invention provides an intelligent power cabinet with a safety guarantee system, including a cabinet body and a safety guarantee system arranged on the cabinet body, the cabinet body includes a box body, and the top of the box body A herringbone-shaped rainproof top cover is installed, and a base is installed at the bottom. The box body includes side panels connected on the left, right, and rear sides and openable left and right door panels installed on the front side, wherein the side panels Both the panel and the door panel include a shell and a moisture-proof layer. The moisture-proof layer covers the inner wall of the shell and is fixedly connected with the shell. The side shell of the shell is provided with a rubber guard, and the rubber guard is fixedly connected with the shell. The left and right two side plates are symmetrically made with radiating zones, and the radiating zones include strip windows (20) arranged in parallel, and strip eaves on the top of each strip window, and the inside of the radiating zone is also provided with The arched plate (3) arched to the inside of the shell, the upper edge of the arched plate (3) is connected to the upper edge of the uppermost strip window, and the lower edge of the arched plate (3) is connected to the uppermost The lower edge of the strip window below, the two side edges of the arched plate (3) are made into flanging, turned to the side of the heat dissipation area corresponding to the arched plate;

The safety guarantee system includes a door closing switch arranged on the box body to identify user information; a door magnet for detecting whether the door panel is normally opened; a camera installed in the power cabinet; when the door panel is detected When the door panel is opened abnormally, the microcontroller that triggers the camera to take pictures; and the alarm that sends an alarm when the door panel is opened abnormally connected with the microcontroller; and the backstage that is connected with the microcontroller A communication device for the terminal to send a warning message;

The door panel is also provided with a rotating display assembly connected to the camera, and the rotating screen assembly includes a display screen, a driven shaft, a driving shaft and a motor, and the two ends of the driven shaft are rotatably respectively The display screen and the cabinet door are connected, one end of the drive shaft is connected to the motor, and the other end is connected to the display screen, the display screen rotates under the drive of the motor, and the motor is arranged in the cabinet.

Further, a temperature sensor connected to the controller to detect the temperature inside the box is installed inside the box, and a plate-type air conditioner for heat dissipation and cooling connected to the microcontroller is installed in the box, and the microcontroller is based on The data output by the temperature sensor is used to control the plate-type air conditioner to adjust the temperature in the box.

Further, the display screen can be a touch screen, and the display screen is also provided with switch and adjustment buttons, which are respectively used to turn on and control the display screen.

Further, the safety assurance system further includes a power supply connected to the microcontroller to supply power to the microcontroller.

Further, when the alarm detects that the cabinet door is opened abnormally, the alarm sound lasts for a preset time; Take pictures at intervals, and when the cabinet door is opened abnormally, the communication device sends a warning message to the background terminal according to the second preset time interval.

Further, the communication device sends warning information to the background terminal through 2G, 3G, 4G network or WiFi signal.

Further, the background terminal is a personal PC, a notebook, a tablet computer, or a mobile phone.

Further, the base includes a bottom plate, on which a limiting frame with the same shape as the bottom of the power cabinet is arranged; The elastic member is provided with a supporting plate that can support the power cabinet, wherein the supporting plate is flush with the upper end surface of the limiting frame when the elastic member only bears the weight of the supporting plate, and the bottom plate is square , the limit frame is composed of four limit plates erected around a square bottom plate, the bottom plate is square, and the limit frame is composed of four limit plates erected around a square bottom plate, two of which are symmetrically arranged The first limit plate is set in a fixed way, and the other two symmetrically set two limit plates are set in a movable way, and the movable limit plate is connected to the two adjacent limit plates through a pin shaft, wherein the movable The limiting plate is flush with the bottom plate in the flattened state.

Further, both sides of the movable limiting plate are respectively provided with chutes for the power cabinet with pulleys at the bottom to slide, the depth of the chutes is set in an increasing manner from the inside to the outside, and the elastic member is a spring , the position of the spring is located at the positions of the four corners of the bottom plate.

Further, the rainproof plate is a stainless steel plate, the moisture-proof layer is a pearl cotton layer, the outer casing is a steel outer casing, and the arched plate (3) is made of silicon steel sheet.

Beneficial effect:

Compared with the prior art, the present invention has the following beneficial effects:

In the cabinet of the present invention, the rotating visual device is integrated on the cabinet door of the cabinet, which can effectively save the space in the cabinet. When performing various operations on the server in the cabinet, the display screen of the rotating visual device can be turned to the inside to facilitate Display and operation, and the display screen can be freely rotated according to the actual situation. According to the need, manually or automatically control the switch to adjust the rotation angle of the display screen, so that it can rotate from 0 degrees to 360 degrees. When the operation is completed, the display screen can be turned Turn the screen to the outside. At this time, you can directly monitor the running status of the server through the monitor outside the cabinet. When the outdoor power cabinet is damaged, it can report to the police in time, reducing the chance of theft of the power cabinet, thereby ensuring the normal operation of the power system.

Description of drawings

Fig. 1 is a structural representation of the security system of the present invention;

Fig. 2 is the installation schematic diagram of safety assurance system of the present invention;

Fig. 3 is a schematic diagram of the rotation state of the display screen on the door panel of the present invention;

Fig. 4 is a schematic diagram of the base structure of the present invention;

Fig. 5 is a sectional view of the use state of Fig. 4 of the present invention;

Fig. 6 is a plan view of the base of the present invention.

Specific Embodiments Specific Embodiments Specific Embodiments

The present invention will be further described below in conjunction with the accompanying drawings.

As shown in Figure 2, the intelligent power cabinet with the safety guarantee system in this embodiment includes a cabinet body and a safety guarantee system arranged on the cabinet body, the cabinet body includes a box body, and the top of the box body is installed The rainproof top cover with a herringbone structure, the base is installed at the bottom, the rainproof top cover is fixedly connected with the cabinet body, the rainproof top cover can block the rainwater for the cabinet body in rainy days, and protect the cabinet body, the base and the cabinet body Fixed connection, the base can raise the cabinet body and reduce the erosion of ground water on the cabinet body. The box body includes side panels connected to its left, right and rear sides and openable left and right door panels installed on the front side, wherein the side panels and door panels include a shell and a moisture-proof layer, and the moisture-proof layer covers The inner wall of the shell is fixedly connected with the shell, the side shell of the shell is provided with a rubber protective strip, and the rubber protective strip is fixedly connected with the shell. The moisture-proof layer can absorb the water vapor in the cabinet and reduce the humidity in the cabinet. The side shell of the shell is provided with a rubber guard, and the rubber guard 6 is fixedly connected with the shell 4. The rubber guard can cut off the direct contact between the skin and the skin. Contact with the sharp edge of the shell reduces the possibility of injury. The rainproof plate is a stainless steel plate, which is strong and durable. The moisture-proof layer is pearl cotton layer, which can dehumidify. The shell is made of steel, strong and durable. The two side plates of the left and right sides are symmetrically made with heat dissipation areas, and the heat dissipation areas include strip windows arranged in parallel, and strip eaves on the top of each strip window, and arches are also arranged inside the heat dissipation areas. The arched plate facing the inside of the shell, the upper edge of the arched plate is connected to the upper edge of the uppermost strip window, and the lower edge of the arched plate is connected to the lower edge of the lowermost strip window , the two side edges of the arched plate are made into a flanging shape, turned to the side of the heat dissipation area corresponding to the arched plate. The arched plate can be made of silicon steel sheets; during the working process of the power cabinet, it can generate sensitive electromagnetic induction to the electromagnetic waves radiated by the alternating current, so that the arched plate can maintain a relatively obvious continuous shaking state, which is conducive to promoting the arched plate. The accumulated dust on the board slides off smoothly. The two side edges of the arched plate are also made into a flanging shape, and turned to the side of the heat dissipation area corresponding to the arched plate; thus, the dust on the arched plate will not slip when sliding down the arched plate. It will slide sideways from both sides of the arched board to the inside of the power cabinet; even a dust-proof screen can be installed on both sides of the arched board, so that the arched board, dust-proof screen and heat dissipation area form a closed space. Completely cut off the passage of dust into the interior of the power cabinet; for the setting method of this kind of dust-proof screen, it is worth pointing out that, compared with directly adhering a layer of screen on the inner wall of the heat dissipation area, this scheme makes the dust-proof screen The area is greatly increased, thereby ensuring the air permeability effect between the heat dissipation area, the arched plate, and the dustproof mesh plate.

When the above-mentioned dust-proof power cabinet is in use, the dust entering through the strip windows will directly hit the surface of the arched plate, thereby attaching to the surface of the arched plate, and under the action of gravity, along the arched The surface of the board slides down to the lower edge of the arched board, and slides out of the power cabinet from the strip window at the bottom; it can be seen that the power cabinet can effectively prevent dust from entering the power cabinet without affecting the ventilation and heat dissipation of the power cabinet. Inside the cabinet, it has a good dustproof effect.

As shown in Figure 1, the described security system includes a door closing switch 101 arranged on the box to identify user information; a door magnet 102 for detecting whether the door panel is normally opened; a camera installed in the power cabinet 103; when it is detected that the door panel is opened abnormally, the microcontroller 104 that triggers the camera to take pictures; and the alarm 105 that is connected to the microcontroller and sends an alarm when the door panel is opened abnormally; and A communication device 106 connected to the microcontroller to send warning information to the background terminal;

Specifically, the communication device is electrically connected to the microcontroller, and the door closing switch is set on the outdoor power cabinet to read the user's identity information. When the door sensor detects that the door of the outdoor power cabinet is opened abnormally, the microcontroller The sensor triggers the camera device to take pictures, and at the same time, the alarm device makes an alarm sound and sends an alarm message to the background terminal.

It should be noted that the background terminal can be a device of the remote console, or a handheld electronic device of the maintenance operator, such as a mobile phone, a pager, and the like.

The purpose of this embodiment is to report to the police in time when the outdoor power cabinet is damaged, thereby reducing the chance of theft of the power cabinet and ensuring the normal operation of the power system.

More specifically, when it is detected that the cabinet door is opened abnormally, the alarm sound of the alarm will stop after a preset time interval, the camera will take pictures according to the first preset time interval, and the communication device will take pictures according to the second preset time interval. Send alarm text messages to the background terminal at preset time intervals.

For example, the outdoor power cabinet detection device will not trigger an alarm after it recognizes a legal access control card; when the cabinet door is hit by an external force or opened in an abnormal state, the alarm will be triggered, and the alarm will last for 5 minutes , and immediately send an alarm message to the relevant responsible person or console equipment through the communication device, and the shooting device of the power cabinet takes 3 photos at a certain time interval. Specifically, the communication device may be a GSM module. The memory has a storage capacity of 10 photos, and the stored data records (including photos, card swiping records, door opening records, etc.) are retrieved on-site through the handheld terminal.

Preferably, the outdoor power cabinet alarm device provided in the above embodiment can realize:

Inductive card swiping and can record 100 card swiping records; the host has a backup battery, which can notify the power bureau in time when the 220V power supply fails; the alarm is installed in the host, and the host is installed in the cabinet. When it is not opened normally, it will send 5 alarms Short message; when the door is illegally opened, the sound and light alarm will stop after 5 minutes; High temperature 80°C, low temperature resistance -35°C;

Anti-interference: The monitoring unit should be able to withstand electromagnetic interference from the power grid and the surrounding environment (including electrical fast transient interference, electrostatic discharge interference, and radiated electromagnetic field interference); components are free from soldering and desoldering; printed boards are not loose; electrical performance Meet the requirements; network interface: GSM module to send short messages, Bluetooth to download information. Effectively reduces the frequency of power cabinet theft.

To sum up, after the outdoor power cabinet alarm device provided by the present invention is put into use, when the door of the power outdoor cabinet is opened abnormally or is damaged by external force, the camera device will automatically take photos and store them (the system has a photo extraction interface) , Upload the alarm information to the relevant management personnel and ring the alarm bell on the spot, which will effectively reduce the impact of outdoor cabinet damage and power failure on users, and the photos of the thief will also provide effective help for social stability. Not only that, the research and development of the alarm device for outdoor power cabinets will facilitate the management of outdoor power cabinets in remote areas, and accumulate valuable practical experience for the network and informatization of power equipment management.

The door panel is also provided with a rotating display assembly connected to the camera. The rotating screen assembly includes a display screen, a driven shaft, a driving shaft and a motor. The cabinet door includes a hollow portion 24 on it, thereby dividing the cabinet door 20 into an upper part 22 and a lower part 26. The upper part 22 and the lower part 26 are respectively a panel, and the material can be transparent glass, plastic or metal. The hollow portion 24 is used for accommodating and installing the rotating display screen assembly 30 .

The rotating display screen assembly 30 includes a display screen 32 and a rotating mechanism (not shown) connected to the display screen 32 and capable of rotating the display screen 32 in the hollow portion 24 . The rotating mechanism includes a driven shaft 34 , a driving shaft 36 and a motor 38 . The upper part of the frame of the display screen 32 shown in FIG. 3 is provided with a power switch 322 and a button 324 .

When assembling and using the rotating display assembly, at first, the display 32 in the rotating display assembly 30 is installed on the hollow part 24 of the cabinet door of the cabinet, and the driven shaft 34 in the rotating display assembly 30 One end of which is rotatably connected to the end of the display screen 32, the other end of the driven shaft 34 is connected to the cabinet door, the motor 38 is connected to one end of the drive shaft 36, and the other end of the drive shaft 36 is connected to the display screen 32 away from the The other end of the driven shaft 36. The starter motor 38 can drive the drive shaft 36 to rotate. In the preferred present example, the connection mode of the drive shaft 36 and the motor 38 can be achieved as follows: the drive shaft 36 is provided with a gear (not shown) near the end of the cabinet body 10, and is installed on the cabinet door 20 The gears in the motor 38 in the side frame cooperate to drive the drive shaft 36 to rotate, so that the display screen 32 fixed on the drive shaft 36 rotates together to reach the set rotation angle.

Of course, the present invention can also manually solve the problem of how to rotate the display screen 32 driven by the drive shaft 36. However, how to automatically adjust in an automatic control mode can include but not limited to the following:

In this preferred embodiment, the control circuit integrated in the display screen 32 includes a central processing unit (CPU) and a storage unit. Through the button 324 on the display screen 32, the input command signal is given to the central processing unit (not shown) embedded in the display screen, and the output command signal is given to the motor 38 installed in the frame of the cabinet door 20, thereby controlling the starting and braking of the motor 38 Move to drive the drive shaft 36 to rotate to a certain angle. For example, the drive shaft 36 and the display screen 32 driven by it can be rotated to 30 degrees, 60 degrees, 120 degrees, 180 degrees and 360 degrees relative to the starting position by pressing the button 324 in sequence. Of course, it corresponds to pressing the button 324, and the specific angle of the specific rotation can be set arbitrarily.

It can be understood that the display screen can be a touch screen, and how to control the rotation of the display screen 32 driven by the drive shaft 36 can output instructions to the motor 38 and control the start and brake of the motor 38 by touching the touch screen to achieve.

In addition, in this embodiment, the control circuit can also be provided with a storage unit, which stores the signal processed by the central processing unit each time. After the power is turned on next time, if the central processing unit does not receive a newly accepted external command , the system will automatically extract the information of the latest system operation from the memory, automatically run, and adjust the display screen 32 to the previous use state.

In addition, it can be understood that the display screen 32 may integrate a gravity sensing system inside for the convenience of the operator to view the display screen of the display screen 32 . Thus, when the display screen 32 is turned from the position facing the outside of the cabinet door 20 to the position facing the inside of the cabinet door 20, the display screen can be automatically mirrored and flipped, so as to facilitate the operator to view.

When the server in the cabinet performs various operations, the present invention can manually or automatically control the angle of free rotation of the display screen 32 as required, thereby facilitating manipulation of the display screen 32 and monitoring of the server's operating conditions inside the cabinet.

The inside of the box is installed with a temperature sensor connected to the controller to detect the temperature in the box, and a plate-type air conditioner for heat dissipation and cooling connected to the microcontroller is installed in the box, and the microcontroller is based on the temperature. The data output by the sensor adjusts the temperature inside the cabinet by controlling the plate-type air conditioner.

The communication device sends warning information to the background terminal through 2G, 3G, 4G network or WiFi signal.

The background terminals are personal PCs, notebooks, tablet computers, and mobile phones.

As shown in Figures 4 to 6, the base includes a base plate 1, on which a limit frame 2 with the same shape as the bottom of the power cabinet is arranged; on the base plate and located in the limit frame An elastic member 3 is provided inside, and a supporting plate 4 capable of supporting the power cabinet is arranged on the elastic member, wherein the supporting plate is in contact with the upper part of the limit frame when the elastic member only bears the weight of the supporting plate. The end faces are even, the bottom plate is square, the limit frame is composed of four limit plates erected around the square bottom plate, the bottom plate is square, and the limit frame is composed of four limit plates erected around the square bottom plate Composition, in which two symmetrically arranged two limit plates are set in a fixed way, and the other two symmetrically set two limit plates are set in a movable way. A limit plate 6 is connected, wherein, the movable limit plate is flush with the base plate in the flattened state.

Both sides of the limiting plate adopting the movable mode are respectively provided with a chute 7 for the power cabinet with a pulley at the bottom to slide. The depth of the chute is set in an increasing manner from the inside to the outside, and the elastic member is a spring. The positions of the springs are located at the positions of the four corners of the bottom plate.

During use, the electrical cabinet 5 is lifted onto the base by manpower. Since the limit frame on the base has the same shape as the bottom of the electric cabinet, the electric cabinet can just be placed in the limit frame. After the electrical cabinet is placed, due to the weight of the electrical cabinet itself, the elastic member will be compressed, causing a part of the bottom of the electrical cabinet to sink deeply into the limit frame. Therefore, the electrical cabinet is limited by the limit frame, and it will not easily shift. And due to the effect of the elastic member, the up and down vibration caused by the electrical cabinet will be eased. When the electrical cabinet needs to be relocated, it is only necessary to expand the movable limiting plate and push the electrical cabinet with pulleys down from the chute there.

It should be understood for the present invention that the above-mentioned embodiments have further described the purpose, technical solutions and beneficial effects of the present invention in further detail. The above are only embodiments of the present invention and are not intended to limit the present invention. Within the spirit and principles of the present invention, any modifications, equivalent replacements, improvements, etc., should be included in the protection scope of the present invention, and the protection scope of the present invention should be based on the protection scope defined in the claims.

Claims (10)

1. the intelligent electric power cabinet with safe-guard system, it is characterized in that: comprise cabinet and be arranged on the safe-guard system on described cabinet, described cabinet comprises casing, the top of described casing is provided with the rainproof top cover of herringbone structure, bottom is provided with base, described casing comprises its left side, right, the side plate that rear three sides are connected and installed in front can the left side of folding, right door-plate, wherein said side plate and door-plate include shell and moisture barrier, the inwall of described moisture barrier covering shell, and be fixedly connected with shell, the limit shell of described shell is provided with rubber guard strip, described rubber guard strip is fixedly connected with shell, a described left side, on two right side plates, symmetry is manufactured with radiating area, described radiating area comprises the strip window (20) be arranged in parallel, and the strip eaves on each strip window top, the inside of described radiating area is also provided with the arch sheet (3) of arch to enclosure, the upper edge of the described strip window in one, connection the top, upper edge of described arch sheet (3), and the lower edge of described arch sheet (3) connects the lower edge of the described strip window of bottom one, two sides of described arch sheet (3) are along making flange shape, turn over to the side, radiating area corresponding to this arch sheet,

Described safe-guard system, comprises and is arranged on described casing, recognition user information close door switch; Whether detect described door-plate by the door magnetic normally opened; Be arranged on the camera in electric power cabinet; When described door-plate being detected improper opening, trigger the microcontroller that described camera head is taken pictures; And described micro-control controller be connected door-plate is improper open time, send the alarm of warning; And the communication device sending warning message to background terminal to be connected with described microcontroller;

Described door-plate is also provided with the rotational display screen assembly be connected with described camera, described rotary screen assembly comprises display screen, a driven shaft, a driving shaft and a motor, the two ends of this driven shaft connect display screen and cabinet door rotationally respectively, this driving shaft one end connects motor, the other end connects this display screen, this display screen rotates under this motor drives, and described motor is arranged in described cabinet.

2. the intelligent electric power cabinet with safe-guard system according to claim 1, it is characterized in that: described box house is provided with and detects temperature sensor in casing with described for controller is connected, be provided with the board-like air-conditioning of the cooling be connected with described microcontroller in described casing, the data that described microcontroller exports based on described temperature sensor adjust temperature in casing by controlling described board-like air-conditioning.

3. the intelligent electric power cabinet with safe-guard system according to claim 1, is characterized in that: this display screen can be a touch screen, and this display screen is also provided with switch and adjustment button, is respectively used to open and control display screen.

4. the intelligent electric power cabinet with safe-guard system according to claim 1, is characterized in that: described safe-guard system also comprises and being connected with described microcontroller, is the power supply that described microcontroller is powered.

5. the intelligent electric power cabinet with safe-guard system according to claim 1, it is characterized in that: described alarm is when described cabinet door being detected improper opening, chimes of doom continues Preset Time, when described cabinet door being detected improper opening, described camera head is taken pictures according to the first prefixed time interval, described cabinet door improper opening time, described communication device according to second prefixed time interval send warning message to background terminal.

6. the intelligent electric power cabinet with safe-guard system according to claim 1, is characterized in that: described communication device sends warning message by 2G, 3G, 4G network or WiFi signal to described background terminal.

7. the intelligent electric power cabinet with safe-guard system according to claim 1, is characterized in that: described background terminal is individual PC, notebook, panel computer, mobile phone.

8. the intelligent electric power cabinet with safe-guard system according to claim 1, is characterized in that:

Described base comprises a base plate, and described base plate is provided with a limitting casing identical with electric power cabinet bottom shape, described base plate is positioned at described limitting casing and is provided with elastic component, described elastic component is provided with can the supporting plate of support electric power cabinet, wherein, described supporting plate is concordant with the upper surface of described limitting casing when elastic component only bears pallets weight, described base plate is square, described limitting casing is made up of the four pieces of limiting plates erect around square floor, described base plate is square, described limitting casing is made up of the four pieces of limiting plates erect around square floor, wherein two pieces of symmetrically arranged two limiting plates adopt fixed form to arrange, another two pieces symmetrically arranged two limiting plates adopt manner to arrange, the two pieces of limiting plates adopting the limiting plate of manner to be adjacent by bearing pin mode are connected, wherein, movable limiting plate is mutually concordant with described base plate under flattening situation.

9. the intelligent electric power cabinet with safe-guard system stated according to Claim 8, it is characterized in that: adopt the both sides of limiting plate of manner to be respectively provided with the chute that can slide with the electric power cabinet of pulley for bottom, the degree of depth of described chute is from inside to outside arranged in incremental manner, described elastic component is spring, and the position of described spring is positioned on the position, four angles of described base plate.

10. the intelligent electric power cabinet with safe-guard system according to claim 1, it is characterized in that: described flashing board is corrosion resistant plate, described moisture barrier is expanded polyethylene foam layer, and described shell is steel shell, and described arch sheet (3) is made up of siliconized plate.