80results about How to "Expanded area is large" patented technology

The invention relates to a longitudinal unfolding mechanism for a direct-connected folding wing. At present, folding wings of all missiles have functions of one time unfolding and locking, and the unfolding time of the folding wings of all the missiles is very short, the unfolding and locking impact is higher, and the interference on the posture of a flying missile is higher. By adoption of a direct-connected cam mechanism design idea, the reliable locking of folding wings of the missiles can be realized at a time. Power is supplied by a gas actuator cylinder and directly drives a cam to movealong a guide rail; and a driven sliding block on the missile wing is contacted with a chute of the cam and moves in the chute of the cam to realize unfolding of the folding wing. By the longitudinalunfolding mechanism, the minimization of a wrapping space of the folding wing is realized, the mechanism is compact, and high-precision and high-reliability folding, unfolding and locking can be realized easily.

The invention relates to a redundant locking type longitudinal expansion mechanism of a folding wing. The existing missile folding wing has the once expansion locking function and has the defects of extremely short expansion time, great expansion locking impact and great posture interference on a missile in flight. The longitudinal expansion mechanism provided by the invention adopts the design idea that a worm mechanism and a ball nut are combined, wherein the mechanism can realize the once reliable locking of the folding wing; the power of a gas actuator cylinder drives the nut to move; a screw shaft is linked with a worm, thereby driving a worm gear to rotate around a wing shaft; and the locking of the folding wing is realized by utilizing the self-locking action of the worm. The longitudinal expansion mechanism provided by the invention realizes the minimization of the enveloping space of the folding wing, has the advantage of compact structure and is easy to realize the folding, the expansion and the locking with high accuracy and high reliability.

The application provides a flexible screen assembly. The flexible screen assembly includes a flexible screen body, a support member, and a driving mechanism; the flexible screen body includes a display surface and a non-display surface opposite to each other; the support member is stacked and arranged on the non-display surface of the flexible screen body; and the driving mechanism is connected tothe support member to drive the support member to stretch and contract; wherein the support member is attached to the non-display surface of the flexible screen body to drive the flexible screen bodyto synchronously stretch and contract in the same direction when the support member stretches and contracts. According to the flexible screen assembly provided by the embodiment of the application, the driving mechanism drives the support member to move, thereby driving the flexible screen body to stretch and contract; therefore, the working mode is simple. The flexible screen body is contractedinside an electronic device by a rolling method, therefore, the space occupation is small; and when the flexible screen body is stretched, a larger deployment area can be provided, therefore, the userexperience is improved. In addition, the flexible screen is placed in a curled state without folding, which can extend the service life.

The invention provides a mobile terminal. The mobile terminal comprises a flexible display screen, a first supporting part, a second supporting part and a third supporting part, wherein the flexible display screen fits to the first supporting part, the second supporting part and the third supporting part; the first supporting part and the second supporting part are connected through a first connecting part; the second supporting part and the third supporting part are connected through a second connecting part; the first connecting part and the second connecting part are bendable parts; the first connecting part is provided with a first detecting element for detecting a bending state of the first connecting part; and the second connecting part is provided with a second detecting element fordetecting a bending state of the second connecting part. The mobile terminal utilizes the first connecting part and the second connecting part which are bendable, can realize folding on the flexibledisplay screen, so that the expanding area of the display screen can be increased within a limited integral dimension; and moreover, dynamic display experience of the flexible display screen can be provided, so that the energy-saving effect is achieved.

The invention discloses a multifunctional high-efficiency air purifier. The multifunctional high-efficiency air purifier solves the problems that in the prior art, the air purification efficiency of an air purifier is low, the noise is high, most generated negative ions are heavy status negative oxygen ions, gas monitoring and alarming functions cannot be achieved, and an air humidification function cannot be achieved. The multifunctional high-efficiency air purifier comprises an air purifier shell, a centrifugal fan, a filter cylinder, a negative ion generator and a negative hydrogen ion convertor, wherein air inlets and air outlets are formed in the air purifier shell. The direction of a fan inlet of the centrifugal fan is perpendicular to the direction of a fan outlet, one end of the filter cylinder is arranged on the fan air inlet in a sleeved mode, and the other end of the filter cylinder is sealed; and the negative ion generator is connected with the negative hydrogen ion convertor, a gas monitoring and alarming device, an air temperature monitoring device and an air humidification device are further arranged, and the purified air is humidified through the air humidification device and discharged via the air outlets. The multifunctional high-efficiency air purifier is simple in structure, and reliable and scientific in design.

The present invention provides a loudspeaker diaphragm and a loudspeaker. The loudspeaker diaphragm comprises a diaphragm body, the diaphragm body is a rectangular basin-like structure, the basin-likestructure comprises a rectangular bottom surface, an annular side wall and extruded outwards rectangular edge which are connected in order from inside to outside, the four corners of the rectangularbottom surface and the rectangular edge are circular beads, the annular side wall is constructed to a three-dimensional array structure formed by a plurality of irregular surface bodies, and the adjacent irregular surface bodies are mutually connected through the edges of the irregular surface bodies. The rectangular basin-like structure of the diaphragm and the triangular three-dimensional arraystructure can improve the rigidity modulus, can reinforce robustness and can improve the conversion of the acoustic energy; paper pulp is employed as raw materials and carbon fiber and wool are addedto enhance the service life and self-damping of the diaphragm while reducing the diaphragm quality; and moreover, the loudspeaker diaphragm and the loudspeaker are not prone to generation of segmentation vibration and focusing so as to reduce harmonic distortion and phase distortion.

The invention relates to a switching power supply casing and a manufacture method thereof. The switching power supply casing comprises a base and a cover detachably mounted on the base, wherein the base wholly adopts a U shape and comprises a baseplate, a left side plate and a right side plate, the baseplate is horizontal, the left side plate is vertical and connected to the left end of the baseplate from above, and the right side plate is vertical and connected to the right end of the baseplate from above; the cover body wholly adopts a U shape and comprises a top plate, a front side plate and a rear side plate, the top plate is horizontal, the front side plate is vertical and connected to the front end of the top plate from below, and the rear side plate is vertical and connected to the rear end of the top plate from below; radiating holes and various types of mounting holes are formed in the base and the cover; and the rear side plate of the cover is detachably connected with a connecting plate of the baseplate of the base through a fastener. Main parts of the base and the cover can be subjected to one-step bending forming after stamping blanking, and the processing procedures are reduced remarkably under the premise that the radiating effect is guaranteed.

The invention relates to the technical field of computer hardware, and discloses a dust removal case capable of adjusting the temperature based on reversible reaction, which comprises a case body, a movable rod is elastically connected to the bottom end of the case body, a contact is fixedly connected to the bottom end of the movable rod, a heat dissipation disc is fixedly connected to the bottomof the case body, and a heat dissipation port is formed in the center of the heat dissipation disc. An electromagnet is fixedly connected to the top of the heat dissipation disc, and driving fan blades are elastically connected to the interior of the top of the heat dissipation disc. According to the dust removal case capable of adjusting the temperature based on the reversible reaction, heat is continuously absorbed through the reversible reaction of nitrogen dioxide gas in the gas cavity, the temperature in the case body is reduced, meanwhile, the expansion area of a heat dissipation openingis increased, heat exchange between the interior and the exterior of the case body is enhanced, and a second magnetic block is driven to rotate through a rotating rod;the first magnetic block and thesecond magnetic block are closed to each other, when the clamping rods clamp the fur airbags, the rubber rods rub to generate static electricity, dust in air is adsorbed, the effect of electrostaticdust adsorption is achieved, and the dust removal effect is improved.

The invention provides a full-automatic cat litter clearing device capable of carrying out replacement. The full-automatic cat litter clearing device comprises a shell, a cat litter bin and a driving device, wherein the cat litter bin and the driving device are arranged in the shell, and the driving device is connected with the cat litter bin and can drive the cat litter bin to rotate; and the cat litter bin comprises a bin body and a replacement bin box, a connecting part used for being connected with the driving device is arranged on the periphery of the bin body, a cavity is formed in the bin body, the replacement bin box is arranged in the cavity and connected with the cavity, and an inlet is formed in the replacement bin box. The full-automatic cat litter clearing device capable of carrying out replacement has the advantages that a waste box is arranged in the replacement bin box, the replacement bin box only needs to be integrally taken out in the replacement process, and therefore people cannot make contact with or see waste inside the replacement bin box; and special cat litter is matched, one cat can use the replacement bin box about one month, and no matter needs to be done within one month, so that the workload of raising the cat is greatly reduced.

The invention provides a shear wall frame. The shear wall frame is characterized in that the shear wall frame comprises a corrugated plate, a frame and shear pieces. The corrugated plate is arranged on the inner periphery of the frame, and the edges of the corrugated plate are connected with the frame. Concave parts and convex parts which are alternately arranged are arranged on any surface of the corrugated plate. The multiple shear pieces are distributed on the two sides of the corrugated plate, and all the shear pieces are connected with the corrugated plate and arranged in the different concave parts. The corrugated plate and the frame form a main body structure of the shear wall frame, when the shear wall is vibrated, the surface of the corrugated plate obliquely intersects with vibration perpendicular to the central plane of the corrugated plate, the wave crest firstly encounters vibration force, the oblique crossing angle of the vibration force of the wave crest of the corrugated plate perpendicular to the central plane of the corrugated plate is small, and the bearing capacity of the shear wall is improved.

The invention discloses a dual authentication door lock. The dual authentication door lock comprises a fingerprint key, a checking module, and a locking mechanism; the locking mechanism comprises a side spring bolt, an upper spring bolt and a lower spring bolt; through an electric push rod, popping and retraction of the spring bolts can be controlled through an electric push rod, the checking module is used for determining the identity of a guest and comprises a lock cylinder and a processing module, after the lock cylinder rotates by a certain angle, an interface of the processing module canbe exposed out, the key can be inserted into the processing module only by rotating a dynamic angle, in the process, a radio frequency identification module verifies an electronic label in the key, first-layer verification is obtained, after the key is inserted in the processing module, the fingerprint identifying part in the key is powered on, the fingerprint identifying part sends the information after fingerprint identifying to the processing module, second-layer verification is achieved, unlocking is achieved only through two-time verification, and safety is greatly improved.

The invention discloses a substrate structure suitable for a flexible solar wing and a forming method of the substrate structure. The substrate structure has certain flexibility, is thin (0.3 mm) andlarge in size, and has good mechanical properties and space environment resistance. The flexible substrate adopts a novel design thought integrating the characteristics of a flexible plate and a rigidplate, and is of a five-layer plane symmetrical structure, the middle layer is made of a fiber reinforced composite material, the outermost layer is a polyimide film, and the polyimide film and the middle reinforcing layer are bonded, cured and formed by adopting a flexible adhesive. According to the flexible substrate suitable for the low-orbit environment, in order to protect low-orbit atomic oxygen, an atomic oxygen protection layer is further arranged on the outer surface of the polyimide film. In order to ensure no layering, no bubble and smooth surface between layers after the flexiblesubstrate is molded, the invention innovatively provides a molding process of combining a soft board and a hard board for molding.

The invention discloses a solar battery sailboard unfolding mechanism, and can be used for solving the problems that a pneumatic drive is adopted for the existing solar battery sailboard unfolding mechanism, the sealability requirement is high, the structure is complicate, and floor space is large. The unfolding mechanism comprises a fixed support and a moveable support and a folded arm mechanism, wherein multiple groups of folded arm mechanisms are articulated between the fixed support and the moveable support, and the two ends of the fixed support are respectively articulated with two unfolding inner arms; the two ends of the moveable support are respectively articulated with two unfolding outer arms, the other ends of the unfolding outer arms and the unfolding inner arm are provided with gears so as to form gear pairs which are mutually meshed; and a hydraumatic push-pull rod is arranged between the fixed support and the unfolding inner arms, and the gear pairs positioned on one side of the two ends of the fixed support are connected through a stretching mechanism. The unfolding mechanism provided by the invention has the advantages that the constructional element quantity is less, developed area is large, the floor area is small after shrinkage, the unfolding mechanism has hardly any requirements on sealability and the like, the hydraulic drive is adopted, and the reliability is high.

The invention discloses a finely levelling robot with a folding type connecting rod. The finely levelling robot with the folding type connecting rod comprises chassis, and a connecting rod, a scrapingplate stretching and retracting executing mechanism and a grain surface scraping plate which are mounted between the two chassis; the connecting rod comprises a stretching and retracting frame and astretching and retracting supporting mechanism; the stretching and retracting frame comprises a plurality of stretching and retracting unit frames; the plurality of the stretching and retracting unitframes are connected end to end in sequence to form a whole body; the plurality of the stretching and retracting unit frames can be overlapped with one another or unfolded in the horizontal direction;each stretching and retracting unit frame is provided with first unit rods and second unit rods which are hinged to one another; the stretching and retracting supporting mechanism can stretch and retract to adjust the height above the floor in the vertical direction; the robot can reduce the size of the structure to enters an opening of a grain store and is assembled into the structure with a large grain levelling area after entering the grain store to expand a grain levelling robot and expand the grain levelling area; and the existing manual store levelling and impurity removing is directlyimproved to an automatic and intelligent level by effectively increasing the grain levelling range and improving the grain levelling efficiency per unit time, so that the speed and the capacity of grain store levelling and surface layer impurity removing can be improved remarkably.

The invention provides an external gear-shaped reinforced composite pipe. The external gear-shaped reinforced composite pipe is characterized in that the external gear-shaped reinforced composite pipe comprises a pipe body, a spigot and a socket, wherein the spigot and the socket are arranged at the two ends of the pipe body respectively, the pipe body comprises an inner layer and an outer layer, the cross section of the inner layer is in a circular ring shape, the outer layer comprises a plurality of gear-shaped circular ring protrusions, and the gear-shaped circular ring protrusions are of hollow structures; and the cross section of the outer layer is in a gear ring shape, and the cross section of the spigot and the cross section of the socket are both in a ring shape. According to the external gear-shaped reinforced composite pipe, the outer layer of the pipe body is of a gear circular ring structure, the contact area of the pipe body and soil can be enlarged, good anti-sedimentation capacity is achieved, water and soil loss is prevented, higher rigidity and higher load resistance are achieved, the axial flexibility of traditional double-wall corrugations is reserved, stress is uniform, and collapse caused by local buckling deformation or reverse bending deformation is not liable to occur.

The invention belongs to the field of greenhouses, and discloses an intelligent greenhouse planting device. The intelligent greenhouse planting device comprises a greenhouse and a window opening and closing device, wherein the greenhouse is provided with shutters used for ventilation in the greenhouse; and the window opening and closing device comprises memory metals, rotating shafts and gears. The intelligent greenhouse planting device further comprises rain and snow prevention mechanisms, wherein the rain and snow prevention mechanisms comprise inflation bottles, hydraulic cylinders, rain and snow sensors and programmable logic controllers (PLC) which are arranged on the outer side wall of the greenhouse; air bags matched with the shutters are connected to bottle openings of the inflation bottles in a sealed mode; compressed air is arranged in the inflation bottles; valves are arranged on the inflation bottles; piston rods of the hydraulic cylinders are movably arranged in the inflation bottles and matched with the valves; bottle plugs are arranged at the upper ends of the piston rods; vertical rods with the diameter being smaller than the diameters of the bottle plugs are arranged at the lower ends of the piston rods; and through holes are formed in the piston rods. According to the scheme, the rain and snow prevention mechanisms are arranged, so that the greenhouse can be continuously ventilated in rainy and snowy days, and rain and snow cannot enter the greenhouse.

The invention relates to the technical field of purification equipment, in particular to a discharge structure, a dust removal device and an air purifier. The discharge structure comprises a conductive strip made of a conductive material, a dielectric layer and a discharge electrode; at least part of the dielectric layer is attached to the conducting strip; and the dielectric layer is made of an insulating material; and at least part of the discharge electrode is attached to the dielectric layer, and the discharge electrode and the conducting strip are arranged on the two opposite sides of the dielectric layer respectively; and a discharge slit is formed between the discharge electrode and the dielectric layer. According to the discharge structure provided by the invention, an electric field is formed under the condition of applying enough voltage by constructing a dielectric barrier discharge structural form and utilizing an atmospheric pressure surface discharge technology to ionize air, so that gaseous pollutants are effectively removed, and the effects of disinfecting and sterilizing the air are achieved.

The invention relates to the technical field of barrier-free taxi taking auxiliary equipment, in particular to a barrier-free folding supporting device for a taxi, which comprises a first supporting plate, a second supporting plate and a middle control plate. According to the foldable supporting device for the barrier-free taxi, the foldable structural design is adopted, the occupied space of the foldable supporting device in the storage state can be effectively reduced, the foldable supporting device can be conveniently used in narrow spaces such as the taxi, and the unfolding area of the foldable supporting device can be effectively enlarged; a movable control handle is adopted between the first supporting plate, the second supporting plate and the middle control plate to rotate so as to be clamped into a limiting frame, and lateral limiting plates on the two sides of a middle assembly base are adopted for limiting the bottom and the top, so that the structural stability and firmness of the whole device after being unfolded are greatly improved; hidden storage and external control can be facilitated, and use is very convenient; and when unfolded, the device automatically extends downwards, the supporting force and stability of the bottoms of the two sides of the device are improved, and safety is greatly improved.

The invention relates to an unfoldable solar battery array and a pressing releasing mechanism thereof. The unfoldable solar battery array comprises the pressing releasing mechanism and a solar batteryarray which are arranged on a spacecraft; the pressing releasing mechanism comprises a storage box plate; one end of the storage box plate is hinged to the spacecraft through a box plate hinge; a connection separating mechanism capable of being automatically separated from the spacecraft is arranged at the other end of the storage box plate; the solar battery array comprises multiple base plates;the adjacent base plates are hinged to each other through interplate hinges; solar cells are arranged on the base plates; a one-dimensional unfolding device is also arranged on the solar battery array; one end of the unfolding device is arranged at one end of the solar battery array; the other end of the unfolding device is arranged at the other end of the solar battery array; and one end of thesolar battery array is also connected to the spacecraft. According to the unfoldable solar battery array and the pressing releasing mechanism thereof, the unfolding area is large, and the folding andunfolding ratio is high.

The invention discloses electronic equipment, and belongs to the field of communication equipment. The electronic equipment comprises a flexible screen; a shell assembly, which comprises a first shell and a second shell which are movably connected in the first direction and matched in a limiting mode in the direction perpendicular to the first direction; a supporting assembly, which comprises a first supporting plate fixed to the first shell and a second supporting plate driven by the second shell to move in the first direction, wherein the first supporting plate and the second supporting plate are each provided with a screen supporting face used for supporting the flexible screen, and one end of the flexible screen is fixedly connected with the second shell, the other end of the first spring extends between the first supporting plate and the first shell. In the first state, the distance between the first end of the first shell and the second end of the second shell is a first distance, and the first supporting plate and the second supporting plate are arranged in a stacked mode; in the second state, the distance between the first end part and the second end part is increased, and the screen supporting surfaces are coplanar. The flexible screen in the electronic equipment does not generate creases in the action process.

The invention discloses a wind-solar complementary mobile energy storage vehicle and a seamless switching control method thereof. The wind-solar complementary mobile energy storage vehicle comprises a carriage (1) and a vehicle head (2) for dragging the carriage (1), wherein an electrical cabinet (3) is arranged in the carriage (1), a plurality of quick plugging interfaces (3.1) are formed in the side wall of the carriage (1), and an outgoing line of a storage battery in the electrical cabinet (3) is communicated with the quick plugging interfaces (3.1); a plurality of sets of wind driven generators (4) are vertically arranged on the outer wall of the top of the vehicle head (2), two sets of solar power generation assemblies (5) are arranged on the outer wall of the top of the carriage (1), and power output lines of the wind driven generators (4) and power output lines of the solar cell panels (5.3) are connected to a storage battery in the electrical cabinet (3). According to the wind-solar complementary mobile energy storage vehicle and the seamless switching control method thereof, an energy storage mode is adopted for power supply, noise and tail gas pollution to a power supply place are avoided, meanwhile, switching is convenient and rapid, and original power can be maintained for effective power supply.

The invention discloses a pair of underwater bionic swimming aid sock shoes. Each underwater bionic swimming aid sock shoe comprises a plastic sock shoe sole, a sock surface, an ear-shaped swimming shoe skirt, a skirt beam convex rib, a skirt beam folding groove and a sock shoe adhesive vertical wall, wherein plastic cement is utilized to lengthen the outer side, the front and the back of the foot for more than twice of the area of the sole, so that the ear-shaped swimming shoe skirt is formed. When the foot pedals forcibly, the ear-shaped swimming shoe skirt is extended, so that the stress area of the sole can be increased, and the swimming speed of a human body is increased; when the foot is bent to shrink back, the ear-shaped swimming shoe skirt is folded, the stress area is reduced, the foot bending and shrinkage resistance can be reduced, and underwater actions are like a sleeve-fish body. The skirt beam convex rib and a skirt beam sloping film are utilized as a sock shoe skirt webpage skeleton, the skirt beam folding groove and a skirt beam sloping groove are beneficial for the ear-shaped swimming shoe skirt to fold and bend at an angle which is greater than a right angle, the sock shoe adhesive vertical wall is utilized to position the ear-shaped swimming shoe skirt to a planar state, the foot pedals and retracts under the water to drive the ear-shaped swimming shoe skirt to reciprocally shrink and expand to assist swimming, the plastic cement is used for reinforcing tight joint of a sock surface, the shoe and the foot, and the pair of underwater bionic swimming aid sock shoes is particularly suitable for leathernecks, underwater operators and swimming fans.

The invention discloses a solar sunshade knapsack, which comprises a knapsack body, straps are fixedly arranged on the end face of the left side of the knapsack body, a knapsack storage cavity is formed in the knapsack body, a knapsack cover capable of being opened is assembled on the inner top wall of the knapsack storage cavity, and a sunshade plate sliding groove with an upward opening is formed in the inner wall of the left side of the knapsack storage cavity; a sunshade mechanism is arranged in the sunshade plate sliding groove, a fan cavity with an upward opening is formed in the end face of the top of the knapsack body, and an upper transmission cavity is formed in the inner bottom wall of the fan cavity; the knapsack is simple in structure and convenient to operate, airflow is formed through the fan to ventilate the person knapsack when the back is hot and sweats in the backpack process, comfort in the knapsack process is guaranteed, when sunlight on the rear side is too large,the sunshade plate is unfolded to shield the sunlight on the rear side of a person, the heatstroke phenomenon of the person due to the too large sunlight is avoided, Meanwhile, the unfolding area ofthe photovoltaic panel is increased while the sunshade plate is unfolded, the knapsack is better charged, and long-time use of the knapsack is guaranteed.

The invention relates to the technical field of precast pile manufacturing, in particular to an unreinforced precast concrete thin-wall pile and a preparation method thereof, and the unreinforced precast concrete thin-wall pile is prepared from the following raw material components in parts by weight: 400-700 parts of cement, 50-100 parts of mineral admixture, 700-1000 parts of sand, 100-250 partsof water, 5-20 parts of admixture, 3-8 parts of air entraining agent and 70-130 parts of composite fiber. The raw materials are stirred and mixed to prepare newly mixed concrete with the slump of 70-120 mm, and then a thin-wall pile with the wall thickness of 30-50 mm is manufactured. The invention further relates to application of the unreinforced prefabricated concrete thin-wall pile in a stiffbody composite foundation. The unreinforced precast concrete thin-wall pile manufactured by the method is large in bearing capacity, good in pile body corrosion resistance and durability, low in steel consumption and high in cost performance, and has a wide application prospect.

The invention discloses a dense arrangement type filler which comprises a middle rope and a plurality of fiber units, wherein the fiber units are fixedly arranged on the middle rope and bent into an 8-shaped fiber rope; the middles of the fiber units are in braided connection with the middle rope; and hollow rings are respectively formed in two sides of the fiber units. Since the middle rope and the fiber units in the invention are fixed by adopting a warp knitted weft insertion weaving process, the processing cost is low, and the filler is difficult in filament drop and long in service life.

The invention provides an outer multilateral impeller-shaped reinforced composite pipe. The outer multilateral impeller-shaped reinforced composite pipe comprises a pipe body, a spigot and a socket, wherein the spigot and the socket are arranged at two ends of the pipe body respectively, the pipe body comprises an inner layer and an outer layer, the cross section of the inner layer is in a circular ring shape, and the outer layer comprises polygonal circular ring protrusions and corrugated protrusions; and the corrugated protrusions are arranged on the surfaces of the straight edges of the polygonal annular protrusions, the polygonal annular protrusions and the corrugated protrusions are each of a hollow structure, the cross section of the outer layer is in the shape of a polygonal impeller ring, and the cross section of the spigot and the cross section of the socket are each in the shape of a ring. The outer layer of the pipe body is of a multilateral impeller circular ring structure with circular rings and corrugations, so that the contact area of the pipe body and soil can be enlarged, the pipe body has good anti-settling capacity, water and soil loss is prevented, the pipe body further has higher rigidity and higher load resistance, the axial flexibility of traditional double-wall corrugations is reserved, stress is uniform, and collapse caused by local buckling deformation or reverse bending deformation is not liable to occur.