22results about How to "Mature processing technology" patented technology

The invention requests to protect a terahertz wave beam steering gear based on a Huygens metasurface, which relates to the technical field of terahertz, and is composed of five resonance units with different shapes and sizes in the horizontal direction, and the same units are periodically arranged in the vertical direction. Each resonance unit comprises a dielectric substrate PI (polyimide) and a metal structure. The metal structure in one resonance unit is composed of a plurality of metal strips, and a metal opening is designed between the specific metal strips in each group of metal structure. According to the terahertz wave beam steering device based on the Huygens metasurface, incident terahertz waves can be refracted and steered, and the terahertz wave beam steering device has a high transmission coefficient. The terahertz sensor is simple in structure and mature in manufacturing process, and has important application prospects in the fields of terahertz components, terahertz sensing and the like.

The utility model discloses a flexible photovoltaic support in the technical field of solar photovoltaic, which comprises at least two groups of photovoltaic supports which are longitudinally arranged, connecting pieces are arranged in the longitudinal direction, a plurality of groups of photovoltaic supports are connected through the connecting pieces, each group of photovoltaic supports at least comprises two bases, two inhaul cables and a photovoltaic assembly, the bases are transversely arranged, and the photovoltaic assemblies are arranged on the bases. The lower ends of the bases are fixed on the ground, the bases are connected through the inhaul cables, the photovoltaic modules are fixed on the inhaul cables, the connecting pieces comprise span stabilizing pieces and connecting ropes, the span stabilizing pieces are connected between the inhaul cables arranged on each group of photovoltaic supports side by side, and the connecting ropes are used for connecting the span stabilizing pieces on two adjacent groups of photovoltaic supports. According to the flexible photovoltaic support, the technical problems that a certain safety risk exists and the labor intensity and the installation difficulty are increased due to the fact that an installation instrument needs to be manually lifted on a mountainous region to pre-tighten a steel rope in an existing device are solved, and the installation difficulty and the labor intensity are reduced, and the installation cost is reduced.

A high-precision quartz crystal vibrating beam accelerometer comprises a base, a meter core and a shell, a circuit board is packaged in the base, and the meter core is packaged on the base through the shell; the meter core comprises a mass pendulum, two resonant beams and two circular damping plates which are all made of quartz crystal materials; the mass pendulum comprises two semicircular bases, two semicircular pendulum tongues and a circular flexible layer, the two semicircular bases and the two semicircular pendulum tongues are symmetrically bonded to the two sides of the circular flexible layer respectively, and receding gaps are formed between the semicircular bases and the semicircular pendulum tongues; the resonant beam is radially arranged above a strip-shaped groove in the center of the outer end surface of the semicircular base, one end of the resonant beam is bonded with the semicircular base, and the other end of the resonant beam is bonded with the semicircular swing tongue and electrically connected with the circuit board; the two circular damping plates are connected to the two sides of the two semicircular bases in a semi-symmetrical bonding mode through the inner end faces, the resonance beams are located in strip-shaped holes of the circular damping plates, and the semicircular concave tables and the semicircular swing tongues are opposite to form vibration gaps.

The application provides a glass with energy-saving and wireless communication frequency band enhancement functions, comprising periodically arranged FSS units, each of which comprises an infrared low emission layer, an air layer and a wave-transparent FSS layer, the infrared low emission layer comprising a first glass layer and a first dielectric substrate; the surface of the first glass layer is provided with a first etching layer; the first etching layer comprises a plurality of grid grooves; the wave-transparent FSS layer comprises a second glass layer, a second dielectric substrate and a third glass layer; the surface of the second glass layer is provided with a second etching layer; the second etching layer comprises an annular groove and a plurality of cut grooves arranged on the circumferential side of the annular groove; the surface of the third glass layer is provided with a third etching layer; and the third etching layer is provided with a second annular patch. The structure can realize the effects of wave-transparent communication frequency band and infrared low emission, has visible light transparency, meets certain thickness and is suitable for large-area paving.

This invention discloses an automatic screwdriver bit mounting shaft structure, including a shaft body. The rear end of the shaft body is provided with a motor connection part for connecting to the drive shaft of a screwdriver motor. The front end of the shaft body is provided with a bit mounting part extending axially. The side wall of the bit mounting part is provided with a central rectangular groove extending axially. The central rectangular groove is used to mate with the central flat part of a central flat bit. This invention integrates three independent torque transmission structures—a central rectangular groove, an eccentric rectangular groove, and an end rectangular groove—on the same mounting shaft, which can simultaneously adapt to three mainstream bit types: central flat, notched, and double-ear. Different types of bits can be freely switched without changing the mounting shaft, simplifying the operation process, improving work efficiency, and reducing the number of accessories, thus lowering usage and management costs.

According to the technical scheme, the blowing-up type steam generator is characterized in that the blowing-up type steam generator comprises a first base plate and a second base plate which are resistant to high temperature, the first base plate and the second base plate are pressed and sealed through the hot pressing technology, and a channel which is generated through the blowing-up technology and used for liquid or steam to flow is formed in the first base plate; a liquid inlet used for liquid inflow and an outlet used for leading out heated liquid or steam are formed in the positions, located at the initial end and the tail end of the channel, of the first base plate respectively, and a graphene heating coating used for heating the liquid in the channel is arranged on the bottom face of the second base plate; according to the utility model, the blowing process is adopted for production and processing, the processing steps are simple, the production efficiency is higher, the production cost can be reduced, and meanwhile, the device can be flexibly and widely applied to various electric heating products; moreover, the base plate adopted in the blowing process is thin, heat conduction is fast, the heating efficiency of the adopted graphene heating coating is high, and the instant heating effect can be easily achieved.

The application discloses a motor-driven closing and opening cover lock, characterized in that the motor-driven closing and opening cover lock comprises a shell assembly, a lock block assembly, a closing and opening mechanism and a driving assembly; the shell assembly comprises a shell and a mounting plate which are fixed to each other; the lock block assembly comprises a ratchet wheel and a pawl which are rotatably installed on the shell assembly, and an elastic member which provides a reset force for the ratchet wheel and the pawl; the closing and opening mechanism comprises a slider which is reciprocally slidably installed on the shell assembly, and a cam which is installed on the slider; and the driving assembly comprises a closing pull wire and an electric opening pull wire which are electrically connected with a door lock controller; wherein the closing pull wire and the electric opening pull wire are connected with the slider, and through bidirectional sliding of the slider on the shell assembly, the ratchet wheel or the pawl is driven to move, so that the motor-driven closing and opening cover lock realizes the functions of motor-driven closing and motor-driven opening. Through bidirectional movement of a single slider, the motor-driven closing and opening cover lock realizes two core functions of motor-driven closing and motor-driven opening in an integrated manner, and the structure is highly simplified.

The present invention relates to the technical field of electromagnetic functional devices, and in particular to a multi-bit terahertz phase shifter based on a reflection-transmission combined with phase shifting method, including an input waveguide, a waveguide-microstrip line transition structure on a large-area substrate, a reflective terahertz phase shifting structure, a transmission terahertz phase shifting structure, a microstrip line-waveguide transition structure on a large-area substrate, and an output waveguide. The multi-bit terahertz phase shifter based on a reflection-transmission combined with phase shifting method proposed in the present invention adopts a waveguide-microstrip line transition structure of a large-area substrate to reduce the insertion loss of the device, avoid excessive reflection from damaging the terahertz source, and is easy to work with other terahertz modules to achieve good working results. The present invention adopts a coding voltage to control the on-off of a diode to achieve 360° multi-bit terahertz phase regulation. The coding voltage can be conveniently combined with a digital baseband circuit to achieve high-speed information transmission.

The utility model relates to a combined type power assembly suspension assembly which comprises a suspension shock pad arranged on a vehicle frame and an engine support arranged on an engine, the suspension shock pad is provided with a conical concave hole, the engine support is provided with a conical boss, and the suspension shock pad and the engine support are positioned through the conical concave hole and the conical boss and are connected through assembly bolts. The suspension shock pad and the engine support are positioned through the conical concave hole and the conical boss, the problem that when the suspension shock pad and the engine support are assembled, assembly is difficult due to the fact that installation holes are difficult to align is solved, lapping is more convenient, and assembly is more accurate. And meanwhile, the problem that the vibration isolation performance of the suspension shock pad is reduced due to assembly stress in the suspension shock pad caused by assembly deviation is solved.

The steel bar truss floor support plate comprises a steel plate, a steel bar truss and a concrete layer, concrete layers are attached to the upper surface and the lower surface of the steel plate; the steel plate is a dense-hole steel plate. The utility model provides a UHPC (Ultra High Performance Concrete)-dense-hole profiled steel sheet steel bar truss floor support plate, which is mainly characterized in that a profiled steel sheet is provided with holes, and floor steel bars and pipelines can be arranged on site; the UHPC-dense-hole profiled steel sheet steel bar truss floor support plate is directly used as a construction formwork for pouring concrete, putty can be directly applied after construction is completed, a suspended ceiling is not needed, and the floor clearance is improved; the UHPC bottom plate is prefabricated in a factory, the product quality is guaranteed, damage is avoided in the transportation process, direct stacking can be achieved, and the transportation and construction efficiency is improved. The floor support plate can be moved by workers due to the lightweight design, and construction is facilitated.

This invention provides a low-line-count lidar, belonging to the field of lidar technology, comprising: a housing, a PCBA, an integrated transceiver module, and a multi-faceted scanning mirror; horizontal scanning of the light beam is achieved by rotating the multi-faceted scanning mirror; after the light beam is reflected by reflective surfaces at different tilt angles, different exit angles are generated in the vertical direction, thereby generating multi-line scanning; the number of lines and vertical field of view of the lidar can be flexibly configured by adjusting the number of reflective surfaces and the tilt angle; the overall architecture of this invention is scientifically simple, safe and reliable in operation, requires only one transceiver module, significantly reducing the number of lasers and detectors; it reduces size and is suitable for vehicle-mounted, robotic, and other scenarios; only single-channel transceiver module calibration and standardization are required, making calibration less difficult than for multi-channel systems.

The application belongs to the field of micro-nano photonics and infrared sensing, and relates to an infrared broadband absorption metasurface structure. A structure of metal layer-dielectric layer-metal layer is adopted, the upper and lower metal layers adopt platinum, the dielectric layer uses traditional material silicon, and array arrangement is realized by combining different size sub-units, an infrared broadband absorption metasurface based on a square bevel structure is designed, and an average absorption rate of more than 60% in the 8-13um atmospheric window band is realized. The bottom metal and the dielectric layer are uniform layer structures, and the top metal layer adopts a square bevel of one angle, the ratio of the bevel to the square side length is related to the absorption wavelength. The application regulates the light field based on micro-nano structure parameter change, has good wavelength selectivity and modulation performance, the selected material has good chemical stability, and has practicability and process compatibility.

The invention discloses a dual-passband filter based on a dual-mode ring resonator and a design method of the dual-passband filter. The input and output feeder lines are located on the top layer of the dielectric substrate, the two cascaded transmission lines and the dual-mode annular resonator are connected with the input and output feeder lines, the vertical parallel short-circuit stub line and the bent parallel open-circuit stub line are connected, and the metal grounding plate is located on the bottom layer of the dielectric substrate. Wherein the annular resonator is composed of a pair of vertical coupling lines and two transverse transmission lines. The two coupling lines and the transverse transmission line on the upper side form a signal path, meanwhile, the transverse transmission line on the lower side serves as another signal path, signal cancellation is achieved through the 180-degree phase difference, and the dual-passband characteristic is achieved. The dual-mode ring resonator and the parallel open-circuit stub can realize seven transmission zeros, thereby effectively improving the frequency selectivity. In addition, the invention further provides a comprehensive design method, the optimal characteristic impedance value can be obtained, the design efficiency is fully improved, and universality is achieved.

The invention provides a pump-jet propeller rotor based on heterogeneous coupling blades and a design method, the pump-jet propeller rotor comprises a plurality of groups of rotor blades which are arranged in a staggered coupling manner along the circumferential direction of a rotor hub, each group of rotor blades comprises long blades and short blades, the blade tip parts of each group of long blades are connected with the inner wall of a circular end ring, and the blade tip parts of each group of short blades are connected with the inner wall of the circular end ring; each group of short blades are arranged in a gap area between two adjacent long blades, and the blade root parts of the short blades are fixed on the inner wall of the circular end ring. When the scaling semi-suspension rudder is subjected to a loading test, torque application can be performed on the scaling semi-suspension rudder system, and the torque value of the rudder system can be monitored; and corresponding no-load test, static load test and dynamic load test are completed.

The invention particularly relates to an optical lens bracket, and belongs to the technical field of optical systems. Comprising a vertical plate and a bottom plate, the vertical plate is used for installing an optical lens assembly, the bottom plate is provided with a locking assembly used for fastening the bottom plate to a supporting table top, and the bottom plate is fixedly arranged at the bottom of the vertical plate; the adjusting assembly is located beside the vertical plate, one end of the adjusting assembly is used for being connected with a supporting table top, and the other end of the adjusting assembly is connected with the bottom plate; the adjusting assembly comprises a ball groove fixing piece and a ball head rod piece, and a ball head of the ball head rod piece is arranged in a spherical groove of the ball groove fixing piece in a matched mode. In the using process, the distance between the bottom plate and the supporting table top is adjusted by changing the relative position between the ball head rod piece and the bottom plate. The problem of pitching adjustment of the large-aperture optical mirror bracket can be solved, the reliability of the large-aperture optical mirror bracket can be improved, and the large-aperture optical mirror bracket has the advantages of being simple in structure, wide in application scene and mature in processing technology.

The utility model provides a novel three-way pipe fitting and a refrigeration pipeline assembly, a main pipe body in the novel three-way pipe fitting is of a combined structure and comprises a thin-wall pipe body and a neck bush, the section of the inner circumferential wall of the thin-wall pipe body is circular or approximately circular, and the neck bush is embedded and attached into the thin-wall pipe body. A lining through hole with the axis perpendicular to or basically perpendicular to the axis of the thin-wall pipe body is formed in the circumferential wall of the neck bush, a pipe body through hole is correspondingly formed in the thin-wall pipe body, and the lining through hole and the pipe body through hole jointly form a pipe connecting hole. The thickness of the overlapped wall of the thin-wall pipe body and the neck bush at the pipe connecting hole is 1.5 mm-5 mm, and the inner circumferential wall of the through hole of the bush and the inner circumferential wall of the through hole of the pipe body jointly form a brazing face of the pipe connecting hole. The ratio of the inner diameter of the connecting end of the vertical connecting pipe to the inner diameter of the neck bush at the connecting pipe hole is 0.75-1.50, the peripheral wall of the connecting end of the vertical connecting pipe is attached and welded to a brazing surface in a surface contact manner, and a brazing layer is formed between the two attaching surfaces. The two end connecting pipes are welded to the two axial ends of the main pipe body in a sleeved mode respectively.

This invention discloses a segmented skeleton-type flexible current transformer, relating to the field of current measurement technology. The invention aims to solve the technical problems of traditional rigid current transformers, such as inconvenient installation, incompatibility with Rogowski coil outputs, low accuracy, and excessive errors at the joints of existing flexible current transformers. The transformer core employs differentiated impregnation treatment; the middle flexible main body section is not impregnated to maintain flexibility, while the rigid connecting sections at both ends are impregnated, cured, and have smooth connecting surfaces. Multiple I-shaped skeletons are fixed at equal intervals on the flexible main body section, with air gaps reserved between adjacent skeletons. Independent secondary windings wound on each skeleton are connected in series to form a single closed loop. Locking docking mechanisms are provided at both ends to form a closed magnetic circuit. An auxiliary compensation winding connected in the same direction is fixed on the rigid connecting section to compensate for measurement errors at the magnetic circuit connection point. This invention allows for uninterrupted winding installation, direct output of standard current signals without auxiliary power, full-circuit measurement accuracy of 0.5%, simple and reliable structure, and is suitable for power distribution upgrades and current measurement in confined spaces.

The invention provides a display module, a preparation method thereof and a display device.The preparation method of the display module comprises the steps that a to-be-processed display module is obtained, the to-be-processed display module comprises a display area and a frame area located on the periphery of the display area, and the to-be-processed display module further comprises a bonding area and an edge area; the bonding area is located on one side of the frame area close to the display area, and the edge area is located on one side of the frame area away from the display area. And forming a cutting channel in an area between the bonding area and the edge area. And a blocking dam is formed between the cutting channel and the bonding area. According to the preparation method of the display module, the problem of signal line short circuit caused by cutting can be solved by arranging the blocking dam, so that the cutting yield is improved.

The invention discloses a welding-free reinforcing structure and method for fatigue cracks of a steel bridge deck slab, and belongs to the field of bridge engineering. The welding-free reinforcing structure comprises a steel bridge deck slab top plate, top plate welding studs, a reinforcing mesh, a steel bridge deck slab U-shaped stiffening rib, a reinforcing steel plate and an ultra-high-performance cement-based material layer; the steel bridge deck U-shaped stiffening ribs are fixed to the lower surface of the steel bridge deck top plate, the reinforcing steel plate is pasted within the fatigue crack range of the top plate, digging holes are formed in the reinforcing steel plate, the vertical bending steel plate is arranged on the digging holes, the top plate welding nails are welded to the steel bridge deck top plate, and the reinforcing mesh is installed on the top plate welding nails. And the ultra-high performance cement-based material layer is poured above the steel bridge deck top plate, the reinforcing steel plate and the reinforcing mesh. According to the method, the range of the cracks of the top plate is covered with the reinforcing steel plate, the rigidity and strength of the fatigue crack area of the top plate are enhanced through the reinforcing steel plate, the shearing force of the steel bridge deck and the reinforcing steel plate is increased through the dug holes and the vertical bending steel plates on the dug holes, and rapid and nondestructive repairing of the fatigue cracks of the steel bridge deck is achieved.

The dense-hole profiled steel sheet floor support plate comprises a steel plate, a high-rib profiled steel sheet and a concrete layer, a plurality of high-rib profiled steel sheets are fixedly arranged on the steel plate; a concrete layer is attached to the lower surface of each steel plate; the steel plates and the high-rib profiled steel plates are dense-hole steel plates. The dense and higher rib plates of the profiled steel sheet replace a steel bar truss, so that the deflection of the floor support plate is reduced, and the partial rigidity of the floor support plate is provided; the profiled steel sheet is provided with holes, and floor steel bars and pipelines can be arranged on site; the UHPC-dense-hole profiled steel sheet floor support plate is directly used as a construction formwork for pouring concrete, putty can be directly applied after construction is completed, a suspended ceiling is not needed, and the floor clearance is improved; the UHPC bottom plate is prefabricated in a factory, the product quality is guaranteed, damage is avoided in the transportation process, direct stacking can be achieved, and the transportation and construction efficiency is improved. The floor support plate can be moved by workers due to the lightweight design, and construction is facilitated.

The invention discloses a fiber bragg grating ice force sensor integrated with a simply supported beam structure and a force measuring method thereof. The fiber bragg grating ice force sensor comprises a beam body, a fixed support and an optical fiber, the two ends of the beam body are installed on the fixed supports to form a simply supported beam structure. One surface, directly bearing an ice force load, of the part, located between the fixed supports, of the beam body is a stress surface, and the other surface opposite to the stress surface is an optical fiber mounting surface; and the optical fiber is mounted on the optical fiber mounting surface of the beam body. When the stressed plate is subjected to ice force, displacement and strain are generated, the beam body is driven to be bent and deformed in a simply supported beam mode, the optical fiber connecting piece fixed to the beam body generates tiny displacement accordingly, the fiber bragg grating in the optical fiber connected with the optical fiber connecting piece generates axial strain, and therefore the Bragg wavelength of the fiber bragg grating drifts; and the size and direction of the ice force can be obtained through inversion by monitoring wavelength change. According to the invention, the metal beam body and the fiber grating sensing element are highly integrated, the structure is compact, the weight is light, and installation and arrangement on a laboratory ice force experiment model are facilitated.

The invention discloses an absorption-deflection integrated multilayer electromagnetic metasurface which comprises a first dielectric layer, a loss dielectric pattern layer, a second dielectric layer and a reflecting layer which are sequentially arranged from top to bottom, the loss dielectric layer is loss dielectric patterns arranged periodically, and each period is composed of 4-16 basic unit patterns. And each basic unit pattern comprises 1-6 sub-array units. The metasurface can achieve abnormal deflection of electromagnetic waves towards any expected direction under incidence of TE or TM polarized plane waves, energy coupling of the electromagnetic waves towards the expected direction is achieved, meanwhile, the effect of restraining energy of other orders of sidelobes is achieved, and the absorption and deflection efficiency of the metasurface exceeds 80%. Single-station radar stealth is achieved, and meanwhile the probability of being detected by double-station radars is reduced. The stealth metasurface is simple in structure and mature in processing technology, has complete theoretical support and stealth performance, and has important application significance in the field of stealth metasurfaces.