32 results about "Seismic protection" patented technology

The utility model relates to the technical field of energy storage, in particular to an outdoor emergency energy storage power supply with an anti-seismic protection structure, which comprises an emergency energy storage battery, a plurality of interfaces are arranged on the side surface of the emergency energy storage battery, and a protection support is arranged outside the emergency energy storage battery. The protection device comprises a protection support, protection shells are arranged at the four corners of the protection support, the four protection shells correspond to the four corners of the emergency energy storage battery, each protection shell is filled with pearl wool, a square frame is fixedly connected to the side, close to an interface, of the protection support, and a transparent partition plate is arranged in the square frame in a sliding mode. A grip is fixedly connected to the side edge of the transparent partition plate. Through the effect of the external protection support, the protection shell and the pearl wool, a multi-layer protection structure is formed, vibration and impact in the external environment are effectively resisted, meanwhile, the damage risk caused by accidental falling or collision is reduced, and the safety and reliability of an internal power source and other electronic elements are ensured.

The application relates to the technical field of tunnel construction, and particularly discloses a bedding slope tunnel portal anti-seismic protection structure and a construction method, an anti-seismic protection structure, which comprises a retaining protection structure arranged outside a tunnel portal, a slope protection assembly arranged along a slope direction and located on a slope, a sleeve arch system arranged at the tunnel portal, and a first elastic shock absorption structure hingedly connected with the sleeve arch system and the retaining protection structure at two ends; the sleeve arch system comprises a sleeve arch structure arranged at the tunnel portal and connected with the retaining protection structure through the first elastic shock absorption structure, and an energy dissipation assembly mounted outside the sleeve arch structure and arranged along a tunnel axial direction. The construction method of the anti-seismic protection structure is also disclosed; the anti-seismic performance of the protection structure can be improved; and the influence of the earthquake action on the tunnel structure can be effectively reduced.

The utility model relates to the technical field of constructional engineering, and discloses an assembly type steel-wood mixed anti-seismic structure system which comprises a transverse rod and a vertical rod, a connecting sleeve is fixedly installed on the surface of the transverse rod through a bolt, the bottom end of the connecting sleeve is fixedly connected with an inserting seat, an inserting block is inserted into the inserting seat, and the inserting block is fixedly connected with the transverse rod through a bolt. The bottom end of the inserting block is fixedly connected with a connecting base, a bottom sleeve is installed in the connecting base, the bottom sleeve is fixedly installed at the top of the vertical rod through a bolt, a buffering assembly is installed at the top end of the bottom sleeve, containing grooves are formed in the two sides of the inner wall of the inserting base, and clamping assemblies are installed in the containing grooves. According to the steel-wood mixed anti-seismic structure system, the connecting joints can be rapidly assembled, the building efficiency is improved, the buffering assembly is arranged, and the anti-seismic protection effect of the steel-wood mixed anti-seismic structure system is further improved.

The invention discloses a control method and system of a photovoltaic energy storage charging station. The method comprises the following steps: acquiring equipment operation load data, environment interference data and original vibration signals caused by the data; denoising and filtering the original vibration signals to generate a preprocessed vibration signal data set, extracting frequency domain features and time domain features related to geological activities, combining equipment operation load data and environment interference data, and fusing to generate a comprehensive vibration feature matrix; performing mode classification on the vibration characteristics by using a geological risk classification evaluation mechanism, and outputting a risk grade evaluation result; if the risk level evaluation result exceeds a preset threshold value, updating the comprehensive vibration characteristic matrix, analyzing the risk change trend, generating a shockproof strategy optimization instruction, adjusting the operation parameters of the structure shockproof protection device configured at the key structure position based on the shockproof strategy optimization instruction, and verifying the validity of the shockproof strategy by comparing historical data. According to the method, the accuracy and timeliness of structural safety protection of the photovoltaic energy storage charging station are improved.

The utility model relates to the related technical field of transformers, in particular to a power transformer anti-seismic protection device which comprises a transformer body, a protection mechanism is arranged on the upper surface of the transformer body, and a cooling mechanism is arranged on the surface of one side of the transformer body. According to the anti-seismic protection device for the power transformer, by arranging the protection mechanism, when an earthquake occurs, seismic waves drive the transformer body to vibrate, at the moment, a protection plate can primarily buffer vibration borne by the transformer body under the elastic force effect of a first spring, and meanwhile, a swing block can swing under the elastic force effect of a second spring; and the fixing plate is pushed to swing through the connecting plate, vibration borne by the transformer body is further buffered, equipment displacement caused by stress concentration is avoided, and the safety and stability of operation of the transformer body are improved.

The utility model discloses a safe anti -seismic protection mechanism, including anti -seismic mechanism and the fixed establishment of assembling in the upper portion of anti -seismic mechanism, the anti -seismic mechanism includes central seat, the periphery of central seat all slidingly installed has the support plate, one end all fixed mounting of support plate has the sleeve pipe, both sides all slidingly installed of sleeve pipe has the expansion plate, one end all fixed mounting of expansion plate has the corner seat, the utility model relates to the thermal -insulation decorative integrated board processing technical field. The safe anti -seismic protection mechanism, through the cooperation between damper shock absorber and threaded rod, can support the safe anti -seismic protection when, avoid or reduce the vibration of outside to the precision instrument and data storage disc in the safe storage cause damage's condition, through the cooperation of sleeve pipe and expansion plate, can stretch and contract when using the mechanism, the size of the mechanism is adjusted and controlled to the size of safe according to staff, reduced the limitation.

A vibration isolation and seismic protection platform for power equipment, relating to the field of seismic isolation technology, includes a base. Multiple elastic seats are spaced apart on the side walls of the base. Each elastic seat includes an upper support plate and a lower support plate. The upper support plate is connected to the base, and the lower support plate is connected to the lower structure. An elastic connector is provided between the upper and lower support plates. The multiple elastic seats support the base, creating an isolation gap between the bottom surface of the base and the lower structure. Multiple limiting seats are also spaced apart on the side walls of the base. Each limiting seat includes an upper limiting plate and a lower limiting plate. The upper limiting plate is connected to the base, and the lower limiting plate is connected to the lower structure. The upper and lower limiting plates are spaced apart and connected by threaded components. During mild vibrations, the elastic seats can effectively absorb vibrations and maintain the stability of the base. Under accidental loads, the limiting seats can restrict the movement of the base, ensuring the safety of the equipment above the base.

The utility model discloses a battery pack anti -seismic frame structure, it includes: base, floating support board, plugging board, piston and spring, the base top edge is provided with the side guard board that extends upwards, utilizes the installation cavity of side guard board city and the battery pack corresponding, floating support board sets up in the installation cavity, the bottom surface recessed of base is provided with cooling cavity, the piston mounting hole that communicates with the installation cavity is provided with the interval in the cooling cavity top, and the piston sets up in the piston mounting hole, and the piston top is provided with the connecting rod that extends upwards and is connected with floating support board, spring setting is at the bottom of floating support board, and the edge of cooling cavity is provided with the cooling groove that extends to the side guard board in, and is provided with cooling liquid in the cooling cavity. Through the spring and carry out the elastic support of floating support board, and utilize the connecting rod and drive the piston's elevation, consume the energy of vibration, carry out the anti -seismic protection, strengthen the flow of cooling liquid in cooling cavity and cooling groove, be favorable to the heat absorption of battery pack.

The application discloses a pipe force valve with an anti-seismic protection structure, which comprises a valve body, a valve plate body, a valve rod body, a top rod shaft sleeve and a diaphragm body, the valve rod body is connected through the inside of the valve body, one side of the valve rod body is fixedly connected with the valve plate body, the upper end of the valve body is fixedly connected with the top rod shaft sleeve, and the inside of the top rod shaft sleeve is fixedly connected with the diaphragm body. The pipe force valve with the anti-seismic protection structure, when the pipe force valve body is impacted by the outside, the shell is extruded to one side of the valve body, the telescopic rod starts to contract, and the extrusion buffer air bag is extruded, at this time, the buffer air bag is buffered, when the shell moves inward, the buffer spring is compressed synchronously under the action force, and the impact force is secondarily buffered, so that the pipe force valve is less likely to be damaged under the external impact force, and the possibility of affecting the normal work of the valve is reduced.

The invention relates to a cultural relic showcase protection method and system based on active control and earthquake early warning linkage, and the method comprises the following active control stage steps: comparing real-time showcase displacement data with a vibration displacement time history curve, and obtaining a comparison result; and inputting the comparison result into a fuzzy PID module, and outputting an AMD control instruction. The method has the advantages that after seismic waves arrive, the obtained real-time showcase displacement data and the vibration displacement time history curve are compared, and the error between the vibration displacement time history curve and data obtained from the state monitoring module can be obtained. And the comparison result is dynamically adjusted through the fuzzy PID module, so that the accuracy of adjusting the AMD control instruction is improved, and the anti-seismic protection success rate of the fragile cultural relics is further improved.

The utility model discloses an anti-seismic protection type power transformer, which relates to the technical field of power transformers and comprises a base and an anti-seismic unit. A fixed seat is placed on the top surface of the base, the interior of the fixed seat is correspondingly clamped with the bottom frame, a transformer main body is mounted on the top surface of the bottom frame, and a protection unit is arranged on the top surface of the base; the anti-seismic unit comprises sliding plates, damping rods and damping springs, the four damping rods are correspondingly fixed to the left side face and the right side face of the interior of the base in pairs, the sliding plates are fixed to the inner side ends of the damping rods in each group, and the sliding plates are slidably connected with the through grooves in the top face of the base. Vibration generated by the power transformer can be effectively counteracted by matching the damping springs with the damping pads, the power transformer can be protected by the protective shell under the condition that heat dissipation is not affected, and the power transformer can be prevented from colliding with the protective shell in the vibration process through an internally-arranged rubber pad.

Seismic Protection System: An additional seismic protection system (10) for a structure comprising a lower foundation slab (2) and an upper foundation slab (3) with a set of seismic supports (4) between the two, designed to protect the structure against the occurrence of a vertical displacement beneath it, leading to a subsidence of the lower foundation slab (2). This protection system includes a set of two-state support devices (11) arranged between the two foundation slabs, configured to automatically switch, in reaction to the subsidence of the lower foundation slab (2), from a retracted standby state where the support of the upper foundation slab (3) is ensured primarily by the seismic supports (4), to an active deployed state where the force applied by the support devices (11) on the upper foundation slab (3) is sufficient to compensate for the loss of effect of the seismic supports (4). Figure for the abbreviation: Fig. 6

This invention provides a seismic protection structure and method for water conservancy pipelines, relating to the field of pipeline protection. The seismic protection structure includes a first support member, a second support member, and a first connecting assembly. The first support member is configured to support a first pipe fitting, and the second support member is configured to support a second pipe fitting. The second pipe fitting is connected to the first pipe fitting. The first connecting assembly includes a first connecting rod, a second connecting rod, and a third connecting rod connected sequentially. The first connecting rod is connected to the first support member, and the third connecting rod is connected to the second support member. At least one of the first and third connecting rods slides along the axial direction of the first pipe fitting with the second connecting rod. This seismic protection structure and method for water conservancy pipelines can mitigate the different frequency vibration amplitudes of the first and second pipe fittings, thereby improving the stability of the pipe fitting connection.

The invention relates to a non-intrusive anti-seismic protection two-way vibration barrier and a construction method, the non-intrusive anti-seismic protection two-way vibration barrier is arranged on the periphery of a to-be-protected object and buried in a soil body, the non-intrusive anti-seismic protection two-way vibration barrier comprises a groove-shaped rigid enclosure structure and a mass box arranged in the rigid enclosure structure, and a spherical hinge support is arranged on the inner bottom surface of the rigid enclosure structure; the mass box is arranged on the spherical hinge support, a plurality of layered mass blocks stacked in the vertical direction are arranged in the mass box, and a buffering and damping piece is horizontally arranged between the outer circumferential side face of the mass box and the inner circumferential side wall of the rigid enclosure structure. The construction method comprises the steps that a groove is excavated, the enclosure structure is poured, the spherical hinge support is installed, the mass box is hoisted in place, the one-way springs and the dampers are connected, and the layered mass blocks are assembled. The device is reasonable in design, has a non-intrusive anti-seismic protection function, and has the advantages of broadband vibration isolation, high energy dissipation efficiency, adjustable parameters and small influence on a site.

The invention discloses a variable mass column bearing type vertical silo variable stiffness combined seismic isolation system and an application method, and relates to the technical field of building seismic resistance. The system comprises a variable-stiffness shock insulation support module, an overload protection damper module and a cooperative control assembly. The rigidity self-adaption under small / medium / large deformation of the variable-rigidity support is realized through a double-hemming structure; the overload protection damper avoids overload damage by means of an overflow valve pressure relief mechanism; the cooperative control assembly dynamically adjusts parameters according to the material storage state. During application, low-rigidity shock insulation is achieved under the small-earthquake / empty-bin working condition, rigidity linear improvement is achieved under the medium-earthquake / half-bin working condition, high-rigidity limiting is achieved under the large-earthquake / full-bin working condition, and overload protection is triggered. The problems that a traditional shock insulation technology is poor in adaptability and unbalanced in energy consumption and safety are solved, the acceleration response of the granary and the displacement of the shock insulation layer can be remarkably reduced, the method is suitable for newly building and transforming the column type concrete vertical silo, and an anti-seismic guarantee is provided for grain safety.

The utility model discloses a frame structure of a foldable pickup truck back-camel house box, which belongs to the technical field of motor homes and comprises a chassis frame, adjusting support plates are slidably mounted at two ends of the chassis frame, support plates are fixedly connected to the bottom of the chassis frame, a lead screw is connected between the support plates through bearings, and the lead screw is connected with the adjusting support plates through bearings. The bottom of the front face and the bottom of the rear face of the adjusting supporting plate are both fixedly provided with buffering supporting blocks, the bottoms of the buffering supporting blocks are slidably connected with the top of the chassis frame, and the bottom of the other end of the adjusting supporting plate is rotationally provided with a rubber rolling rod. The chassis bracket has the advantages that the supporting plate can be adjusted to flexibly stretch out and draw back so that the chassis bracket can be matched with house boxes of different sizes, and the chassis bracket can be folded and stretched out and drawn back so that the chassis bracket can be conveniently carried, stored and transported; and in addition, the technical effects that the adjusting flexibility is achieved, the anti-seismic protection performance is achieved, and the use efficiency is improved are achieved.

The utility model relates to the technical field of building keel, disclose an anti-seismic keel and easy buckle structure thereof, including base, the top fixed mounting of base has the support plate, the bottom of base is provided with the anchoring structure, is used for reinforcing the connecting stability of base and ground and other installation base, prevent displacement when in the earthquake. The utility model is provided with the arc shock pad, when the earthquake occurs, the arc shock pad is in the installation gap and occurs elastic deformation by the special arc structure of itself. The deformation can effectively dissipate and buffer the energy produced by the earthquake, greatly reduce the earthquake force on the keel main body, thereby avoiding the damage of the keel main body due to stress concentration. Compared with the traditional keel lacking damping and buffering mechanism, the utility model effectively improves the stability of the keel in the earthquake, greatly reduces the risk of building structure suffering damage due to the damage of the keel, and provides more reliable anti-seismic protection for the building.

The invention relates to the technical field of earthquake protection, and discloses an earthquake prevention method based on fault zone balance, which comprises the following steps: S1, earthquake fault zone positioning and detection: determining the trend, range, internal cavity and crack distribution position of an earthquake fault zone through geological radar and earthquake wave detection technologies, and marking a stress concentration area; water injection wells are arranged in the edge area in the extension direction of the fault zone at intervals, and the depth of the water injection wells reaches the core cavity area of the fault zone. According to the method, a traditional passive protection mode of post-earthquake shock absorption and pre-earthquake early warning is broken through, and aiming at the problem of unbalanced fault zone stress caused by an earthquake, the stress is always maintained within a safety threshold value by filling gaps with water, adjusting fluid pressure, directly dispersing a stress concentration area and reducing fault frictional resistance; the earthquake caused by the fact that stress accumulation breaks through a critical value is avoided from the source, and the active protection effect of disease prevention is achieved.

A device for protecting an area from seismic shocks and seismic wave shielding and a method for protecting an area from seismic waves by installing a seismic wave shielding device. The seismic wave shielding device includes a set of uprights embedded in a weathered layer in contact with a bedrock. A material contrast exists between the material forming the stand column and the weathered layer.

The application discloses a double-T plate connecting structure, which comprises a double-T plate, a first connecting mechanism is arranged on the side wall surface of one end of the double-T plate, a second connecting mechanism is arranged on the side wall surface of the other end of the double-T plate, the first connecting mechanism and the second connecting mechanism are fixed through a first fixing mechanism, the first connecting mechanism and the second connecting mechanism are fixed in the double-T plate through a second fixing mechanism, and an anti-seismic mechanism is arranged on the upper wall surface of the second fixing mechanism. When the double-T plate is poured, the first fixing mechanism is placed in the double-T plate, so that the first fixing mechanism can be used for connecting when the double-T plate is solidified, the second fixing mechanism can be used for more firmly connecting a pair of double-T plates through bidirectional threads when the pair of double-T plates are connected, and the anti-seismic mechanism can be used for anti-seismic protection of the connecting position of the pair of double-T plates after the connection and fixation are completed, so that the pair of double-T plates can be used for a longer period and are more firm.

The utility model discloses a connecting piece for a steel structure roof equipment layer pipeline and a main rigid frame, which comprises a top plate, a fixing plate, a bottom plate for supporting, a fixing rod and a fixing cylinder, the fixing rod and the fixing cylinder are nested with each other, the lower end of the fixing cylinder is fixedly connected with the fixing plate, and the fixing cylinder drives the fixing plate to form a lifting structure below the top plate. The side protection plates are symmetrically arranged on the left side and the right side of the fixing plate, a fixing pressing plate used for pressing and positioning is arranged in the middle of each side protection plate, an upper buffering rubber mat is arranged on the inner side of each fixing pressing plate, meanwhile, the fixing pressing plates are arranged above the bottom plate, and a lower buffering rubber mat is arranged at the upper end of the bottom plate. According to the connecting piece capable of being used for the steel structure roof equipment layer pipeline and the main rigid frame, the mounting height of the pipeline can be properly adjusted through telescopic sliding between the fixing rod and the fixing cylinder which are nested with each other, and the pipeline is in contact with the lower buffering rubber mat and the upper buffering rubber mat, so that the buffering and anti-seismic protection effects on the pipeline can be achieved.

The utility model discloses an outdoor unit top cushion packaging structure which comprises an air cushion body, and a hot-pressing part and a hot-pressing bending line are arranged on the air cushion body. By implementing the structure, the packaging structure is environment-friendly, recyclable and low in cost, and has excellent moisture-proof, anti-corrosion and anti-shock protection effects, so that the problems of environmental pollution and production complexity of the current packaging mode of the air conditioner outdoor unit are solved.

The utility model provides an anti-seismic protection structure of a high-low voltage power distribution cabinet, which comprises a power distribution cabinet body and is characterized in that the bottom of the power distribution cabinet body is provided with a box body, the left side and the right side of the power distribution cabinet body are respectively provided with a ventilation slot, the surface of the box body is provided with an anti-seismic mechanism, and the anti-seismic mechanism comprises an arc-shaped block, a frame and a spring damper. The arc-shaped block is located in an inner cavity of the box body, the surface of the arc-shaped block makes contact with the bottom of the power distribution cabinet body, the two frames are fixedly installed on the front side and the rear side of the box body, and sliding rods are fixedly installed on the inner sides of the two frames. The power distribution cabinet transportation device has the advantages that the power distribution cabinet is effectively prevented from being damaged due to bumping in the transportation process, the safety of the power distribution cabinet during transportation is guaranteed, the anti-seismic protection effect of the power distribution cabinet during transportation is improved, and subsequent normal use and work are facilitated.

The utility model relates to the technical field of house anti-seismic protection, in particular to a house wall anti-seismic protection device which comprises a supporting bottom plate and a rotating plate, the rotating plate is installed on one side of the top of the supporting bottom plate through a rotating shaft, two buffering grooves are formed in the rotating plate, and two positioning assemblies are installed in the buffering grooves in a sliding mode. And energy absorption damping rods are fixed to the two sides of the interior of the buffer groove through bolts, one end of each energy absorption damping rod is fixedly connected with one side of a positioning assembly, an energy absorption supporting rod is slidably installed in the positioning assembly, a first threaded groove is formed in the anti-seismic connecting plate, and a plurality of fixing bolts are installed in the fixing plate at equal intervals. The flexible anti-seismic protection device can perform flexible anti-seismic protection on the wall body, and can absorb and consume kinetic energy of the wall body when the wall body moves transversely and longitudinally in an earthquake, so that the deformation and damage degree of the device is reduced, the service life of the device is prolonged, and the maintenance cost is reduced.

The utility model discloses an anti-seismic supercharger oil return pipe, and relates to the technical field of supercharger oil return pipes, the anti-seismic supercharger oil return pipe comprises a pipe body, two ends of the pipe body are respectively provided with a connecting assembly, the connecting assemblies are used for later installation and disassembly of the pipe body, and better operation of technicians is facilitated. Mounting assemblies for fixed connection are arranged on the connecting assemblies at the two ends; and the anti-seismic assembly is arranged on the mounting assemblies at the two ends and used for winding the outer portion of the pipe body, the pipe body can be buffered, and anti-seismic protection of the pipe body is achieved. According to the anti-shock oil return pipe of the supercharger, the soft rubber sleeve and the buffer pad are matched with each other, so that the outer wall of the pipe body can be wound and protected, and the problem that the oil return pipe is damaged due to the fact that the oil return pipe is driven to collide with a peripheral structure by vibration generated during operation of an engine is solved.

The utility model relates to the technical field of semi-automatic de-weighting machines, and discloses a high-stability armature semi-automatic de-weighting machine with an anti-shock protection structure, which comprises a shell, a water storage box is fixedly connected to the right side of the outer wall of the shell, a protection box is slidably connected to the top wall of the water storage box, and a plurality of connecting plates are in threaded connection to the bottom wall of the shell. A protective shell is fixedly connected to the bottom wall of the connecting plate, a bearing column is slidably connected to the inner wall of the protective shell, an extrusion column is slidably connected to the inner wall of the bearing column, and an extrusion rod is mounted on the inner wall of the extrusion column. According to the utility model, the extrusion rod extrudes the hydraulic oil in the extrusion column, so that the hydraulic oil enters the bearing column, the problems of damping force generated by viscous friction of liquid, vibration energy consumption and vibration caused by unbalanced installation of parts are solved, the device becomes stable, the measurement result does not generate deviation after the device is stable, the manufacturing quality of the device is improved, and the production cost is reduced. And the fatigue life of the part is prolonged.

1. Name of the designed product: shockproof bed (shape No. 1). 2. Use of the designed product: for earthquake protection system. 3. Design points of the designed product: in shape. 4. Picture or photo best indicating the design points: perspective view.

The anti-seismic base comprises a bearing plate, a base body and a protection mechanism, universal wheels are arranged below the bearing plate, the base body is located at the bottom of the bearing plate, the protection mechanism is located on the base body and used for carrying out anti-seismic protection on the bearing plate, the protection mechanism comprises an installation frame and an installation groove, the installation frame is located on the base body, and the installation groove is located in the installation frame. The mounting groove is formed in the top of the seat body, and the mounting frame is slidably connected with an inner cavity of the mounting groove in a penetrating mode. Through mutual cooperation of the mounting frame, the buffer column, the fixing plate, the elastic steel sheet, the supporting column, the arc-shaped plate, the connecting frame and the supporting piece, the mounting frame supports the buffer column, the elastic steel sheet, the buffer column, the supporting column and the arc-shaped plate elastically buffer the connecting frame, and the supporting piece buffers downward pressing of the bearing plate; and therefore, damping protection on the bearing plate is facilitated, anti-seismic protection on the seat body and the mixer main body is facilitated, and noise pollution is reduced conveniently.

The utility model relates to the technical field of energy pipeline anti-seismic protection sleeves, and discloses a high-strength anti-seismic protection sleeve which comprises a protection mechanism and a supporting mechanism arranged on the outer side of the protection mechanism, the protection mechanism comprises an inner-layer buffering sleeve, and the protection mechanism, the inner-layer buffering sleeve and a spiral protrusion are matched and can be tightly attached to the surface of a pipeline. Friction force is enhanced to prevent displacement of the protective sleeve, tiny vibration generated by operation of the pipeline can be absorbed through flexible materials, when the pipeline is subjected to vibration impact, the sliding part slides in the sliding groove, the buffer spring is compressed to absorb energy, the flexible compression-resistant part avoids rigid collision of the spring, vibration of different frequencies is effectively attenuated, and the service life of the pipeline is prolonged. And the outer layer protective sleeve is made of a high-strength alloy steel material and is matched with an anti-corrosion coating, so that the outer layer protective sleeve has high-strength impact resistance and excellent corrosion resistance, and can resist external mechanical impact and severe environment erosion.