146results about How to "Simplify complex structures" patented technology

A wind turbine includes a turbine housing, a turbine wheel system housed in the turbine housing, and a wind power converting system for converting kinetic energy generated by the turbine wheel system into electrical energy. The turbine wheel system includes a turbine rotor being driven to rotate circumferentially around an interior of the turbine housing, and a rail frame guiding a rotational movement of a turbine rotor. The wind turbine not only allows airflow to move across and through the turbine wheel system but also allows airflow to be directed and exhausted to maximize and control energy generation. The wind turbine is able to efficiently convert wind power to electrical power via a turbine wheel system which allows for the load generated to be distributed across the circumference of the turbine wheel system instead of localized in the center as the traditional wind turbine.

The invention relates to a crushing mechanism of a plastic crusher, which comprises a transmission shaft, a fixed cutter and a movable cutter set, wherein the movable cutter set comprises a plurality of press cutters and circular cutters, the press cutters and the circular cutters are arranged on the transmission shaft through concentric shaft holes, and two sides of the movable cutter set are provided with a group of fixed cutters respectively; the movable cutter set comprises three press cutters and four circular cutters, wherein the press cutters form a three-leaf spiral structure and each press cutter is provided with three R-shaped press cutter edges, and a plurality of blades of the circular cutters are regularly arranged to form a spiral V-shaped structure and each circular cutter is provided with a plurality of R-shaped circular cutter edges; and a fixed cutter edge matched with the movable cutter part is formed inside the fixed cutter. The crushing mechanism of the plastic crusher has the advantages that through the R-shaped edges formed on the edges of the press cutters and the circular cutters respectively, the irregular cut materials are ensured, the production of dust is reduced, and the conventional complex structure is simplified; and meanwhile, the traditional screen is replaced by adopting the fixed cutter structure, so the assembly is convenient to mount and maintain.

The present invention provides a resembling prismatic structure of light guide plate to economize the optical films such as prismatic film, diffusion film, reflection film and . . . etc. The present invention simplifies the multifarious structures of the prior LCD backlight modules. It can efficiently decrease the material of making the backlight module and the cost of the manufacturing time. In comparison with that conventional LCD backlight module emits light wholly, continuously and evenly from light emitting face of light guiding plate. Large amount of energy is wasted in the conventional backlight module owing to its illumination on the opaque part of LCD substrate such as common electrode and black matrix. As the resembling prismatic structure of the light guide plate of the present invention make light emit from specified positions, and be limited to small angle and pointing to each corresponding opening of LCD substrate, energy can be used efficiently; brightness can be raised; display quality can be promoted; electricity energy consumption can be lowered down, and life of battery can be postponed.

The invention provides a method for enabling a metal insert to be moulded through injection moulding and an injection product containing the metal insert. The method comprises: performing pre-treatment to the metal insert having a pre-set shape to make the surface of the metal insert clean; performing anodic oxidation treatment to the metal insert after the pre-treatment to allow a film layer with a thickness of 1-8 mum to be formed on the surface of the metal insert, wherein holes with irregular shapes are formed in the film layer; performing adhesion treatment to the metal insert containing the holes by using an adhesion treatment agent; and carrying out injection moulding to the metal insert after the adhesion treatment to enable the metal insert to be directly combined with a plastic through flat surfaces. According to the invention, a combination structure of a metal and a plastic is effectively simplified; the manufacture cost is lowered; and the production efficiency and the yield are improved.

The invention particularly relates to an under-bridge accumulated water depth detection device and an intelligent early warning method and belongs to the technical field of detection. The device aims at preventing a great hidden danger from being caused to life and property safety of people due to a reason that a great amount of automobiles are flamed out when the automobiles advance by wading into the water for advancing, and providing real-time information of under-bridge accumulated water to effectively conduct traffic dispersion. The device consists of a pipe, a switch, a float, an infrared transmitter, a first infrared receiver, a second infrared receiver, a third infrared receiver, an LED (Light Emitting Diode) display screen, a short message transmitter, a sensor controller, an LED (controller, a power line, a power supply and a water inlet. The height of an air inlet is different according to different car types and early warning by levels is realized. The under-bridge accumulated water depth detection device and the intelligent early warning method have the advantages that the complex structure of the traditional equipment is simplified, the size is small, the electric energy consumption is small, the safety factor is increased and the intelligent level of the equipment is improved.

The invention relates to the technical field of pipe-shaped material machining, in particular to a multi-head pipe cutter which is provided with a plurality of pipe cutting units and can be used for cutting pipe-shaped materials simultaneously. The multi-head pipe cutter comprises a rack, a pushing device, a power device and at least two sets of pipe cutting units. The power device, the pushing device and the pipe cutting units are all mounted on the rack. Each pipe cutting unit comprises a transmission device and a cutting device, wherein the cutting device is mounted on the transmission device. The power device can drive the cutting devices through the transmission devices. The number of the pushing device is only one, and the pushing device is simultaneously connected with the transmission devices in all the pipe cutting units and can push the cutting devices through the transmission devices. Compared with the prior art, only one pushing device is needed in the entire pipe cutter, the structure is simplified, the failure rate is greatly lowered, more importantly, the synchronicity of the pushing process is guaranteed, and the cutting speed is improved to a great extent.

A double-acting tapered wedge forming mechanism comprises an upper die and a lower die. The upper die comprises an upper die seat, an upper backing plate, a clamp, a stopping plate and a stripper plate. The lower die comprises a lower die seat, a lower backing plate and a mold plate. The mold plate is provided therein with a guide groove and a guide cover plate arranged on the upper part of the guide groove. A side-wall protruding forming mechanism is arranged in the guide groove, and includes a slider A, a male die arranged at one side of the slider A, a slider B, a female die arranged at one side of the slider B and matched with the male die, a driving mechanism for driving the slider A and the slider B to move, and a reset mechanism. The invention has no need for additional single-operation dies during production, simplifies the structure of the conventional side-wall protruding forming mechanism, improves dimensional accuracy, saves the consumption of dies, labors, punching equipment, turnover boxes of semi-finished products and floors, lowers energy consumption and unit cost of parts, can realize large-scale production in short time, and improves the production efficiency and marketability.

A multi-hydraulic-cylinder driving type top-drive casing pipe feeding tool is characterized in that an end face of a hung cylinder is fixedly connected with a hydraulic cylinder assembly through bolts; a piston rod of the hydraulic cylinder assembly is connected with a push-pull clamping cylinder; a clip disk is arranged in the push-pull clamping cylinder; the lower end of the clip disk is connected with a clip plate, and teeth of the clip plate are spherical balls. A pair of bearings is respectively arranged between a hung mandrel and the hung cylinder and between the clip disk and the push-pull clamping cylinder, so that hydraulic cylinders can rotate relative to the hung mandrel and a clip mandrel, and the hydraulic cylinders are prevented from bearing torsion load. When the multi-hydraulic-cylinder driving type top-drive casing pipe feeding tool works, the four hydraulic cylinders can provide descending power for the clip plate simultaneously, at the same time the spherical balls contact the wall of a casing pipe, and a pipe column can be tightly clamped. The multi-hydraulic-cylinder driving type top-drive casing pipe feeding tool has the advantages of preventing the spherical balls from being meshed into the pipe wall, well solving the problems of damage to the pipe wall and abrasion of the clip plate, simplifying a complex device structure by using one single hydraulic cylinder and reducing the manufacturing cost. Furthermore, the multi-hydraulic-cylinder driving type top-drive casing pipe feeding tool can timely rotate, lift and release the pipe column and circulate pulp, the casing pipe feeding operation efficiency and the safety are improved, and the comprehensive well drilling cost is reduced.

The invention relates to the technical field of communication antennas, in particular to a high-gain high-directivity metamaterial microstrip antenna based on a double hexagonal ring structure. Two regular hexagonal metal copper rings which are same in size, are horizontally arranged and connected together are used as metamaterial units; a plurality of metamaterial units which are located on the same horizontal plane and are transversely connected and longitudinally disconnected form a metasurface resonator, the metasurface resonator is bonded to an upper coating dielectric substrate to serveas a metamaterial upper coating, the metamaterial upper coating is loaded on a coaxial feed microstrip antenna, and the high-gain high-directivity metamaterial microstrip antenna is formed. The coaxial feed microstrip antenna comprises a microstrip patch, a coaxial feed probe, an antenna substrate and a metal grounding plate, the microstrip patch is located in the middle of the antenna substrate,and the coaxial feed probe is arranged on the microstrip patch (3). Due to a Fabry-Perot resonant cavity effect, the higher reflection characteristic of the metamaterial is beneficial to enhancing thegain of the antenna.

The invention provides a high-power ultrasonic transducer with a controllable sound field. The high-power ultrasonic transducer with the controllable sound field comprises an ultrasonic frequency power source, a signal delay system, a multi-channel power amplifier and a linear array composite drive piezoelectric ultrasonic pipe-shaped transducer. Oscillating voltage provided by the ultrasonic frequency power source is divided by the signal delay system into a plurality of multi-channel signals with the certain phase difference, the multi-channel power amplifier amplifies the multi-channel signals and excites composite drive piezoelectric ultrasonic pipe-shaped transducer units, the sound field is dynamically adjusted by changing the phase difference of excitation signals, the defects thata single longitudinal vibration sandwich type piezoelectric ultrasonic transducer is limited in power capacity, low in acoustic radiation efficiency, small in sound wave acting range and incapable ofadjusting the sound field are overcome, the three-dimensional space circular ring-shaped sound field focusing area size, focusing circular ring radius and the position of a focus point in the axial position can be adjusted in real time in the application fields of detection ultrasound, power ultrasound and medical ultrasound.

The invention relates to a non-woven online treating device, which sequentially comprises a spinning machine, a hot rolling mill, a liquid feeding machine, a drying machine and a winding machine, wherein the liquid feeding machine is provided with a coating roller, and the coating roller can be partially immersed in an addition agent; and the drying machine has a drying region, and far infrared drying elements are arranged in the drying region. In the non-woven online treating device, the far infrared heating elements are used for drying fabrics, accordingly, the drying effect is good, and the original complicated structure formed by a circulation fan and an air duct is also simplified; and in addition, the fabrics are coated by the partial contact of the coating roller and the addition agent in a passing way, accordingly, the coating is more uniform, and the amount of the addition agent is easily controlled.

The invention relates to a U-shaped channel combined heat pipe receiver, which comprises a high-temperature resistant insulating layer, a daylighting hole, a heat pipe group heat absorption section, division plates, a diffuse reflection cone, an aluminum alloy shell, an annular sleeve, a heat pipe group condensation section, an annular radiation absorption rib, an outer wall semi-enclosed airflow baffle plate, an inner wall semi-enclosed airflow baffle plate, a totally-enclosed airflow baffle plate, an air inlet, an air outlet and the like, wherein a high-temperature heat pipe group is centered and arranged annularly and uniformly; the heat pipe group heat absorption section and the heat pipe group condensation section are separated by the division plates; the heat pipe heat absorption section and the annular radiation absorption rib are tightly contacted with each other, and form a U-shaped heat absorption channel together with the diffuse reflection cone; and the heat pipe condensation section is covered by the annular sleeve, and the division plates are internally arranged between adjacent heat pipes to guide air to flow in an S-shaped track. The U-shaped channel combined heat pipe receiver is suitable for a dish-Stirling solar heat generating system with different kinds of power; and compared with the conventional indirect receiver, the U-shaped channel combined heat pipe receiver has the advantages of uniform distribution of heat flow, high heat transfer efficiency, stable system and the like.

The invention relates to a transmission with two clutches and two intermediate shafts. The transmission comprises the two clutches, a solid input shaft, a hollow input shaft, the two intermediate shafts and an output shaft, wherein the left ends of the coaxially designed solid input shaft and hollow input shaft are respectively connected with the two clutches, the right ends of the solid input shaft and the hollow input shaft are respectively connected with normally engaged gears in the transmission, the transmission has twelve speed states comprising five low-speed forward gears, five high-speed forward gears and two reverse gears, driving gears connected with the solid input shaft are simultaneously engaged with corresponding driven gears on the two intermediate shafts with relatively small transmission degree for forming the five high-speed forward gears and a high-speed reverse gear of the transmission, and driving gears connected with the hollow input shaft are simultaneously engaged with corresponding driven gears on the two intermediate shafts with relatively large transmission degree for forming the five speed-speed forward gears and a low-speed reverse gear of the transmission. An auxiliary box of the existing transmission with two intermediate shafts is omitted, the structure of the transmission is more compact, the axial size of the whole transmission is reduced, and the weight of the main body of the transmission is reduced by 5%-20%.

The invention relates to the technical field of carbon nano tube purification, in particular to a device and a method for directly electrifying and purifying a carbon nano tube. The device comprises amain reactor, the main reactor comprises a material preheating section, a low-temperature heating reaction section, a high-temperature heating reaction section and a material cooling section which are sequentially arranged from top to bottom, the upper end of the main reactor is connected with a feeding valve, the feeding valve is connected with a feeding weighing device, the feeding weighing device is connected with a constant-pressure tank, and the constant-pressure tank is connected with a carbon nano tube storage tank; the invention discloses a device and a process method for directly electrifying and heating a carbon nano tube material in a reactor and then continuously purifying carbon nano tubes by adopting chlorine or hydrogen chloride gas. According to the continuous industrial purification device, graphite is adopted as an inner container of a reactor, a pouring material frame is combined, carbon nano tubes in the reactor are directly powered on, and acid gas and granular carbon nano tubes are used for reaction purification.

The invention discloses a beam structure defect noncontact quantitative diagnosis method based on a convolutional neural network. The diagnosis method comprises the following steps: using a laser Doppler noncontact method to measure the weak vibration time-domain signals of multiple points of a beam under random excitation; adding the random vibration signals of any three points, which are not in a same line; carrying out rapid Fourier transform to generate a frequency spectrum; converting the frequency spectrum from continuous wavelet transform (CWT) into a frequency-size distribution diagram. The quantitative evaluation result of beam structure damage can be obtained by inputting frequency-size distribution diagrams of vibration data of any three points, which are not in a same line and on the surface of a beam structure, into a trained convolutional neural network (CNN). The CNN can evaluate the bean defect level.

The invention discloses a glue coating crystal solidifying method and a glue coating crystal solidifying system. The method comprises the following steps that A, crystal grains on a wafer disc are picked through a crystal solidifying arm; B, the bottoms of the picked crystal grains are immersed into a glue disc to be coated with glue water to be subjected to gluing treatment; C, the crystal grains subjected to the gluing treatment are bonded and welded on positions requiring crystal solidification on the carrier. One machine and control structure is adopted for crystal picking, and in addition, the glue taking is realized through wafers per se, so adverse phenomena that in the traditional mode, the blind points exist in bonding positions of the crystal grains and the glue points, the bonding surface distribution is nonuniform, the deviation of the crystal grains and the glue drip reset points is greater, the glue form is not full, the absorption firmness is poor, and the like can be avoided. The crystal solidifying method can be realized through adopting the independent system, the problem of collision when two independent mechanisms are used for production in the same station can be completely avoided, the mechanical structure is simplified, the control difficulty is reduced, and meanwhile, the product precision is also improved.

The invention discloses glue coating crystal solidifying equipment, which comprises a wafer disc, a glue disc, a carrier and a crystal solidifying arm, wherein the wafer disc is used for placing crystal grains requiring the crystal solidification, the glue disc is used for carrying out gluing treatment on glue water coated on the bottoms of crystal grains, the carrier is used for providing the positions requiring the crystal solidification of the crystal grains, the crystal solidifying arm is used for picking the crystal grains, the crystal grains are conveyed to a glue disc station to be subjected to gluing treatment through the crystal solidifying arm, and then, the crystal grains subjected to the gluing treatment are bonded and welded on the positions requiring the crystal solidification on the carrier through the crystal solidifying arm. The single mechanical arm is adopted for completing the whole technical process (including crystal picking, glue taking and crystal solidifying), the problems of time sequence and structural space of the traditional process are solved, a mode for increasing work units is adopted, the equipment capacity is greatly improved, and meanwhile, the glue coating crystal solidifying equipment mainly solves the problems that in the traditional process, the height-diameter ratio in each time of glue discharge is low, the point gluing precision and the crystal solidifying precision are mutually influenced, the consistency of the shape, the thickness and the size of glue points is poor, the thickness is difficult to control, and the blind point or poor firmness and the like of the bonding surfaces can be caused.

The invention discloses a method for analyzing thermal-hydraulic characteristics of a lead-bismuth fast reactor core. The method comprises the following steps: 1, establishing a coolant flow heat exchange characteristic analysis model; 2, establishing an inter-box flow heat exchange characteristic analysis model; 3, establishing a thermal characteristic analysis model of the fuel rod; 4, establishing a multi-flow-field fluid-structure interaction heat exchange model; and 5, establishing a multi-flow-field fluid-solid coupling solving method. According to the method, a positioning grid and a rod cluster structure in a lead-bismuth fast reactor core are simplified, and the influence of component boxes and inter-box flow on the physical quantity of a coolant in a component is considered in the calculation process; through simplification of inter-box flow and wire winding, inter-box flow temperature distribution, fuel rod temperature distribution and a coolant flow field and temperature field can be accurately calculated, consumption of calculation resources is greatly reduced, the calculation speed is increased, and the calculation efficiency is improved. And an efficient and accurate novel computational fluid mechanics numerical simulation method is provided for analysis of the thermotechnical hydraulic characteristics of the whole reactor core of the lead-bismuth fast reactor in practical engineering application.

The invention discloses a one-way valve. The one-way valve comprises a valve rod, a valve body, a gate plate, a valve cover, a hand wheel and a check valve core assembly, wherein a water inlet and a water outlet are formed in the valve body, the check valve core assembly is arranged in a cavity body of the water inlet to form a check valve, at least one threading hole is formed in the valve cover, a threading hole is formed in the valve body, and a filter pipe is further connected to the outer end of the water inlet. According to the one-way valve, a gate valve and the check valve are integrated, so that the one-way valve has dual functions of two valves, and an original complex combined structure is simplified; the threading holes are formed in the valve cover and the valve body, and the valve cover and the valve body are stringed by threads, so that water is effectively prevented from being stolen by users; and furthermore, the one-way valve further has a filter function, so that the damage of the valve core is effectively prevented.

An automobile lamp having a lighting pattern with a light-and-shade contrast comprises a light guiding pipe, a projecting lens, and a lightening body. Two ends of the light guiding pipe are respectively arranged a light input surface and a light output portion. A light refracting groove is arranged at a bottom surface formed in front of the light output portion and includes a long inclined surface and a short inclined surface. The projecting lens has a light input surface and an arc light output surface. The lightening body projects an original light source opposite to the light input surface of the light guiding pipe. One part of lights of the lightening body is guided to the projecting lens for projecting a lighting pattern with a light-and-shad cut-off line, and the other part of lights is guided toward the lighting pattern to partially overlap the lighting pattern.

The invention discloses a method for designing a switchyard structure. The method is used for complex transformer substation frameworks with multiple steel beams and complex modeling. The method comprises the following steps that A, steel beams are grouped according to the lengths of steel beams of the switchyard structure; B, reference steel beams are selected to be analyzed, and the overall rigidity of the reference steel beams is calculated; C, an equivalent steel beam model which is identical with the reference steel beams in overall rigidity and simple in structure is built; D, a structure model composed of equivalent steel beams and structure columns is built, finite element analysis is carried out, and section design of the structure columns is completed; E, a space lattice type steel beam model is built, internal force of ends of the equivalent steel beams and loads borne by the equivalent steel beams are exerted to the space lattice type steel beam model, finite element analysis is carried out, and section design of the reference steel beams is completed; F, design results are applied to other steel beams of the same group, and design of the switchyard structure is completed. The method can simplify the complex structure, reduce modeling workload, shorten the design cycle and improve work efficiency.

The invention relates to a fluorescence imaging device and method. The device comprises at least one group of laser sources, a to-be-tested sample, an optical color filter, an imaging lens, an image sensor and an intelligent terminal. An optical filter is positioned above the to-be-tested sample and fixedly arranged on the lower end of the imaging lens, the image sensor is fixedly arranged on the upper end of the imaging lens and connected with the intelligent terminal; the laser sources emit laser to be irradiated onto the to-be-tested sample and generate fluorescence which is irradiated onto the optical color filter, only fluorescence with specific wavelength in the fluorescence can penetrate through the optical color filter and irradiate into the imaging lens, and is focused on the image sensor by the imaging lens. According to the fluorescence imaging device, the image acquiring speed and the irradiation uniformity of the laser excited light can be improved, the stability and reliability of equipment can be improved, the cost can be effectively lowered, the utilization rate of the light source can be increased, and the heat radiation characteristic can be greatly improved.

The invention discloses bending equipment of a metal stamping part. The equipment comprises a base, a conveying plate is arranged in the middle of the top end of the base, two symmetric motor mountinggrooves are formed in the top end of the base, and the two motor mounting grooves are located on the two sides of the conveying plate. Rotating motors are installed in the motor mounting grooves through screws, output shafts of the rotating motors are vertically arranged upwards, the output shafts of the rotating motors are connected with rotating rods, and the ends of the rotating rods are connected with pushing plates. Symmetric sliding grooves are formed in the top end of the base, sliding blocks are slidably connected with the interiors of the sliding grooves, and movable plates are connected to the top ends of the sliding blocks. When the equipment is used, the metal stamping part can be limited, and a series of stamping and bending operations can be carried out on the metal stampingpart. Meanwhile, the complex structure of bending equipment in the prior art is simplified, the cost is reduced, the bending efficiency of the metal stamping part can be greatly improved, and the equipment is suitable for popularization.

The invention relates to the field of lighting, in particular to a variable focal length cloud desk lamp lighting device. The variable focal length cloud desk lamp comprises a light housing, a light source control circuit, a focal length varying device, heat dissipation equipment and a double-axis cloud. The variable focal length cloud desk lamp realizes a variable focal length structure with an adjustable beam angle by changing a distance between an LED light source and a lens; the complicated structure of the variable focal length structure is simplified; the focal length is adjusted by adopting a stepping motor, so that the focal length is varied more accurately; a duct type integral structure is adopted, a light-weight aluminum alloy LED lamp bead support is arranged inside the duct type integral structure, so that the heat dissipation property of the integral structure is greatly improved; the variable focal length cloud desk lamp lighting device intelligently follows the rotation, namely light moves with the movement of a cloud camera, so as to capture clearer night environment information; by remote wireless control, the levelness and the pitching angle of the equipment canbe adjusted.

The invention discloses a pico-satellite open type locking and separating device comprising a separating bottom plate, a locking and separating module and a pushing module. The locking and separatingmodule comprises two sliding pieces, two cutting units, two elastic units, two sets of locking pieces and a locking rope, the two sliding pieces are symmetrically distributed and slidably mounted on the two sides of the separating bottom plate, and the two cutting units are mounted on the corresponding sliding pieces. The two elastic units connect the corresponding sliding pieces with the separating bottom plate. When the two sliding pieces are located on the locking position, the two elastic units deform to provide driving force for unlocking, and after the driving force is released, the twosliding pieces slide to the unlocking position where the two sliding pieces are away from each other. The two sets of locking pieces are mounted on the corresponding sliding pieces, and when the sliding pieces are located on the locking position, a satellite is pressed on the pushing module. The locking rope is simultaneously mounted on the cutting faces of the two cutting units in a wound mode and enables the two sliding pieces to slide to the locking position where the two sliding pieces are close to each other. The pico-satellite open type locking and separating device is simple in structure, convenient to mount, stable in work and low in development cost.

The invention discloses a three-axis adjustable device for supporting electronic equipment. The three-axis adjustable device comprises an electronic equipment connecting plate, a pitch angle steering connecting element and a left and right steering connecting element, wherein the electronic equipment connecting plate and the pitch angle steering connecting element are connected in a way capable of rotating around a middle axle of a connecting plate, the pitch angle steering connecting element and the left and right steering connecting element are connected in a way capable of realizing pitching rotation, and the left and right steering connecting element and support arms of an adjustable electronic equipment support frame are connected in a way capable of leftwards and rightwards rotating. The three-axis adjustable device has the advantages that the complicated structure in the prior art is simplified, during the use and the installation, electronic equipment such as a display can be firstly installed with the connecting plate, then, the connecting plate is connected onto the device, the complicated work procedures for the user to install the connecting plate and the electronic equipment are simplified, so the electronic equipment such as the display can be conveniently and fast installed and connected onto the three-axis adjustable device, press riveting is not needed, and in addition, the structure is simple, so the production cost is reduced, the production efficiency is improved, and the cost performance of a product is improved.

The invention provides a passband embedded-type frequency selection absorber based on parallel LC resonator loading, mainly to solve the problem that the structure in the prior art is complicated. Thepassband embedded-type frequency selection absorber based on parallel LC resonator loading comprises m*n periodically-arranged absorber units, wherein the absorber unit comprises a passband embedded-type wave absorption structure and a bandpass frequency selection structure which are vertically cascaded and with an air layer arranged in the middle; the passband embedded-type wave absorption structure comprises a first dielectric plate, the lower surface is printed with four strip patches, the upper surface is printed with a Jerusalem cross patch loaded with parallel LC resonators and resistors, and the two are connected through metalized through holes; the bandpass frequency selection structure comprises a second dielectric plate and a third dielectric plate which are stacked vertically,the upper surface of the second dielectric plate is printed with a first square ring patch and a first tail-winding cross patch located inside, and the upper surface of the third dielectric plate is printed with a standard cross patch and the lower surface is printed with a second square ring patch and a second tail-winding cross patch located inside.