47results about How to "High structural utilization" patented technology

The invention discloses a double-layer dielectric metasurface-based optical zooming system. The system comprises a first layer of dielectric metasurface and a second layer of dielectric metasurface, wherein both the two layers of dielectric metasurface are formed by a plurality of basic units through splicing; each basic unit comprises a base plate and a cylindrical dielectric column arranged on the base plate; a mapping relationship exists among the diameters of the cylindrical dielectric columns of each layer of dielectric metasurface, the distances from the cylindrical dielectric columns tothe centers of the dielectric metasurface and the angles between the cylindrical dielectric columns and the dielectric metasurface; incident light is incident to pass through the two layers of dielectric metasurface in sequence; the two layers of dielectric metasurface carry out phase modulation on the incident light in sequence for two times, so as to realize a focusing effect for the incident light; and when the relative rotation angles of the first layer of dielectric metasurface and the second layer of dielectric metasurface change relative to an initial state, focusing focal lengths corresponding to the two layers of dielectric metasurface are changed, and the focusing effect of the two layers of dielectric metasurface for the incident light is changed. The zooming system provided bythe invention is capable of realizing zooming according to the sizes of the rotation angles and realizing large-scale zooming.

The invention discloses a double-freedom degree rotation device driven by an ultrasonic motor, relating to a device capable of achieving double freedom degrees and aiming to solve the problems of complicated structure, large volume, heavy weight and low driving accuracy of the double-freedom degree rotation device. The double-freedom degree rotation device comprises a supine movement mechanism and a direction movement mechanism, wherein the direction movement mechanism comprises a direction ultrasonic motor, a direction ultrasonic motor seat and a direction encoder; the supine movement mechanism comprises a pitching ultrasonic motor, a pitching ultrasonic motor seat and a pitching encoder; the direction ultrasonic motor is arranged on the direction ultrasonic motor seat; a shaft of a direction encoder and a motor shaft of the direction ultrasonic motor are coaxially arranged and connected; an output shaft of the direction ultrasonic motor is connected with the pitching ultrasonic motor seat; the pitching ultrasonic motor is arranged on the pitching ultrasonic motor seat; a shaft of the pitching encoder and a motor shaft of the pitching ultrasonic motor are coaxially arranged and connected; and an output shaft of the pitching ultrasonic motor is connected with a load. The double-freedom degree rotation device is used for driving the load.

The invention discloses a single rod type main bearing structure applicable to a micro-nano remote sensing camera, relates to the technical field of space optical remote sensing, and solves the problems that the existing coaxial space camera main support structure is high in weight and large in shading ratio and process difficulty, an integrated formation structure is too high in production cost and long in processing period and the like. According to the single rod type main bearing structure applicable to the micro-nano remote sensing camera disclosed by the invention, a secondary mirror bracket and a support rod are in flanged connection; the support rod and a main backplate are in flanged connection; due to adoption of a split type structure, instead of an integrated structure, the processing difficulty of silicon carbide can be greatly reduced; the production period and the manufacturing cost are greatly reduced; the low-cost and short-period requirements of micro-nano load are satisfied; a countersunk bottom hole and an embedded part are pre-punched on a silicon carbide material; an epoxy resin adhering manner is adopted; and the problems that the process of directly processing a threaded hole in the silicon carbide material is high and damage is easily caused can be avoided. By means of the single rod type main bearing structure applicable to the micro-nano remote sensing camera disclosed by the invention, the structural precision and the stability are improved; the structural part number and the manufacturing process are simplified; and the processing period and theprocessing cost are shortened.

The invention discloses a return type freight aircraft. The return type freight aircraft comprises an engine compartment, an airbag compartment, an equipment compartment and a cargo compartment, wherein the engine compartment is located at the bottom; a thruster which is used for providing power required by on-orbit flight for the aircraft is arranged in the engine compartment; the airbag compartment is located above the engine compartment and is fixedly combined with the engine compartment; an airbag and a buffer assembly are arranged in the airbag compartment; the equipment compartment is located above the airbag compartment and is fixedly combined with the airbag compartment; the cargo compartment is located above the equipment compartment and is fixedly combined with the equipment compartment; the engine compartment is configured to bear the thruster so as to provide on-orbit power for the aircraft; the airbag compartment is configured to bear and store the airbag and the buffer assembly as well as a main force bearing structure as an aircraft ascending section; the equipment compartment is configured to bear and fix electric control equipment of the aircraft; and the cargo compartment is configured to carry cargoes to be carried by the aircraft. According to the return type freight aircraft, a force bearing system is formed by connecting compartment sections in series, enough layout space can be provided in the force bearing system, and the utilization rate of the cargo carrying space is maximized.

The invention provides a bridge pier outer pier anticollision device, mainly comprising an underwater measurement device, an ultrasonic transmitting receiver, a control processing system, a positioning transmission system and a power supply system, wherein the underwater measurement device is fixed on an underwater pier, the ultrasonic transmitting receiver is fixed on the underwater measurement device, the control processing system controls the ultrasonic transmitting receiver, and measures distance between the transmitting terminal of the ultrasonic transmitting receiver and the surface of ameasured riverbed. Measured data are summarized and transmitted to a bridge monitoring system of a bridge monitoring department by the positioning transmission system. The anticollision device can completely replace existing manual ship measurement, realizes autonomous power supply by utilizing solar energy, can measure the transmission data in real time, and can perform digital simulation on thedepth and distribution range of scour pits, so as to achieve the aim of intermittently monitoring the depth of the pier scour pits and the distribution condition of the scour pits, help the bridge monitoring department to send out alarm in time in the flood season, and avoid unnecessary life and property loss.

The invention discloses a stock yard. The stock yard comprises a closed storage shed, an inputting and stacking system, storage cells, a storage bin, a fetching and outputting system and transverse retaining walls. The bin walls of the storage bin are designed into inclined segments and supported on the transverse retaining walls under the supporting effect of the structures of the transverse retaining walls. The transverse retaining walls bear vertical loads of the bin walls and materials in the bin, and the stress reasonability of the transverse retaining walls is improved. The bin walls are designed in an inclined manner, the bin capacity losses caused by the conical segment of the bottom of a rectangular bin are reduced, the space utilization rate of the bin is increased, and the material reserve volume of the single bin is increased under the condition of the fixed length of the bin; and the stock yard is particularly suitable for storing materials with distribution requirements, and has high engineering application value.

The invention relates to a novel three-dimensional negative Poisson's ratio honeycomb structure, which comprises combined bodies and connecting bodies, wherein the combined body comprises a single body and side connecting bodies, the single body is in the shape of a concave hexagon, the side connecting body is a single body provided with a through groove, the width of the through groove is the same as that of the single body, the side connecting bodies are fixedly connected to the middle parts of the planes on the two sides of the single body, the connecting bodies are fixedly connected to thesingle bodies and the side connecting bodies respectively, and the multiple sets of combined bodies are arrayed into a honeycomb shape through the connecting bodies. The honeycomb structure has the advantages of light weight, high specific strength and specific rigidity as well as excellent energy absorption characteristic.

The embodiment of the invention provides a curved surface negative Poisson's ratio construction design method and device based on an approximation function, and the method comprises the steps: obtaining a function curve structure of the approximation function, constructing a negative Poisson's ratio structure based on the function curve structure, constructing an optimization target and a design variable based on the approximation function, constructing an optimization function based on the optimization target and the design variable; and calculating the optimization function through a genetic algorithm to obtain an optimal optimization target and an optimal input variable, and optimizing the negative Poisson's ratio structure based on the optimal optimization target and the optimal input variable. According to the method, the curved surface which is smoother than the traditional negative Poisson's ratio is constructed through the approximate function curved surface, and the optimal structure required by the negative Poisson's ratio approximate function curved surface in different occasions is designed through intelligent optimization of the genetic algorithm.

The invention discloses electronic equipment, a control method and device thereof and a readable storage medium. The electronic equipment comprises a first shell, a second shell, a flexible display screen, a sound production device, a first sound receiving device, a second sound receiving device and a third sound receiving device. The second shell can move relative to the first shell, so that the flexible display screen is switched between a folded state and an unfolded state; the sound production device is arranged in the first shell and communicates with the outside through a first sound outlet hole; the first sound receiving device is arranged in the second shell, and the first sound receiving device communicates with a first sound receiving hole; the second sound receiving device and the third sound receiving device are both arranged in the first shell; the second sound receiving device communicates with the outside through a second sound receiving hole; the third sound receiving device communicates with the outside through a third sound receiving hole; in the folded state, the first shell covers the first sound receiving hole; and in the unfolded state, the first sound receiving hole is exposed, and the first sound receiving device communicates with the outside. The scheme can improve the structure utilization rate of the electronic equipment.

The invention discloses a double-layer composite type aeration machine. The double-layer composite type aeration machine comprises a base, wherein a hydraulic propulsion device is arranged on the base and consists of a motor and a speed reduction mechanism; an output shaft of a speed reducer is arranged in the speed reducer; the output shaft of the speed reducer is connected with a main shaft through a coupling; an air guide cavity is arranged in the main shaft; a spiral flow pushing sheet and an air hole are arranged at the lower part of the main shaft; an inverted umbrella-shaped wheel is arranged at the upper part of the main shaft; a compressed air pump is arranged on the base and is connected with an air guide pipe; the air guide pipe is inserted into the air guide cavity of the main shaft. The double-layer composite type aeration machine has the advantages that the structure is simple, and the installation is convenient; by using the spiral flow pushing sheet as the main propulsion source, the aeration propulsion efficiency is greatly improved; by arranging the spiral flow pushing sheet, the water body is pushed by the spiral flow pushing sheet to flow up at high speed, and by matching with the inverted umbrella-shaped impeller at the water surface, the water body is pushed outwards and rotationally by the inverted umbrella-shaped impeller, so as to greatly improve the aeration efficiency.

The invention discloses an automatic vending machine. According to the key points of the technical scheme, the automatic vending machine comprises at least one or more single-column vending shelves which are sequentially arranged, each single-column vending shelf is provided with two side plates located at the front side and the rear side respectively and two thick plates located at the left sideand the right side respectively, the lower end of each side plate located at the front side is provided with a discharge port used for discharge, and the bottom of each single-column vending shelf isprovided with multiple discharge windmill plates, which are arranged in equal radian, a driving piece, which drives the discharge windmill plates to rotate and perform discharge through the dischargeport, and a feeding mechanism which conveys products into the space between every two adjacent discharge windmill plates. According to the automatic vending machine, each single-column vending shelf pushes the products into the space between the two corresponding discharge windmill plates through the corresponding feeding mechanism, after each driving piece drives the multiple corresponding discharge windmill plates, which are arranged in equal radian, to rotate, the products between the two corresponding discharge windmill plates are conveyed to the corresponding discharge port to be discharged, and therefore the products are stably moved and discharged in the single-column vending shelves; and the automatic vending machine is simple in structure, low in manufacturing cost and high in practicability.

The invention discloses an energy storage module and an energy storage system. The energy storage module comprises end plates, insulating plates and a battery cell set, the end plates are arranged at the two ends of the energy storage module, the insulating plates are further arranged on the inner sides of the end plates, and at least one battery cell set arranged in series and in parallel is further arranged between the insulating plates; the insulating plates can also be replaced by insulating coating layers which are coated or injection-molded on the inner sides of the end plates; the battery cell set comprises battery cells, buffer layers, battery cells and flame-retardant layers, the buffer layers are arranged between the adjacent battery cells, and the flame-retardant layers are further arranged on the other sides of the battery cells. The energy storage system comprises energy storage modules, and the energy storage modules are installed according to the mode of at least one layer, at least one row and at least one column. Products of different sizes can be expanded, the development cost is reduced, the grouping efficiency of the energy storage module can be improved, the number of parts is reduced, the cost is reduced, and meanwhile reliability and safety are considered. The energy storage system can be assembled based on the energy storage modules so as to adapt to different application scenes.

The invention discloses a straight-runner low-temperature and low-voltage rectangular fuel cell, which comprises an upper intake pipe connecting plate and a lower exhaust pipe connecting plate, wherein at least two carbon polar plates which are vertically distributed in parallel are tightly pressed between the intake pipe connecting plate and the exhaust pipe connecting plate, an exchange membrane is clamped between every two adjacent carbon polar plates, the upper surface and the lower surface of each carbon polar plate are respectively provided with a plurality of channels which are parallel to one another, and the line type of the cross section of each channel is a sine curve. According to the fuel cell disclosed by the invention, the volume of gas runners is increased, the structural utilization rate is increased, and the effective working area of the fuel cell is increased.

The invention provides an infrared thermal imaging sensor pixel and an infrared thermal imaging sensor, and relates to the field of sensor pixels, wherein the infrared thermal imaging sensor pixel comprises bridge piers, bridge arms, a bridge floor, interconnection through holes, thermistors and release holes; and the whole pixel structure is of a sandwich type laminated structure, top aluminum is located on the bottommost layer of the pixel structure, the bridge floor is located on the topmost layer of the pixel structure, and the bridge piers, the bridge arms, the interconnection through holes and the thermistors are all located in the laminated structure. Through the design of the sandwich type laminated structure, the arrangement area of the thermistors is increased, the utilization rate of the whole pixel structure is improved, and the flicker noise of the material is reduced. In combination with the folding arrangement of the bridge arms, the length of the bridge arms is further increased in a limited space, so that the thermal conductivity of the pixel structure is reduced, and the overall response rate of the pixel structure is improved. In addition, due to the design of the central release hole, the release of the PI adhesive in the combustion process of a PI sacrificial layer is optimized under the condition that the thermistors are not damaged.

According to the intelligent garbage classified collection and transportation device, a treatment conveying mechanism can be in butt joint with discharging openings of all garbage recycling bins, the treatment conveying mechanism can convey garbage output from the discharging openings, and the treatment conveying mechanism can further conduct smashing treatment on the garbage discharged from at least one garbage recycling bin; the garbage conveying and discharging capacity is effectively improved, the garbage can be crushed according to needs, harmful garbage can also be subjected to non-crushing treatment, and the treatment and transfer capacity is improved.

The invention discloses a hanging piece and a shower head structure. The hanging piece is suitable for being hung on a vertical rod piece and comprises a body and a first hook; the gravity center of the hanging piece is configured to be located in the body; one end of the first hook is fixedly connected to one side of the body, and a first through groove is formed between the first hook and the body; the first through groove is provided with a first opening for the rod piece to pass through; the first opening is configured to allow the rod piece to pass through in the state that the first hook does not need to be elastically deformed; the inner surface, facing the body, of the first hook forms an abutting part; the first hook is also provided with a stop part; and the stop part is configured to be suitable for preventing the rod piece from being separated from the opening when the rod piece abuts against the abutting part. The shower head structure comprises a shower head body and the hanging piece; and the shower head body is fixedly connected with the body. According to the hanging piece and the shower head structure, hanging, dismounting and position adjusting can be conveniently achieved on the rod piece, the structure is simple, and the operation is convenient.

The invention discloses an achromatic optical zoom system based on a double-layer medium metasurface, and belongs to the technical field of optical devices. Comprising a first-layer dielectric metasurface and a second-layer dielectric metasurface, and the first-layer dielectric metasurface and the second-layer dielectric metasurface are arranged in parallel. The first-layer dielectric metasurface and the second-layer dielectric metasurface are formed by splicing a plurality of phase regulation and control units, and the first-layer dielectric metasurface and the second-layer dielectric metasurface formed by the plurality of phase regulation and control units respectively have opposite spiral phases; wide-spectrum incident light passes through the spiral phase of the first layer of dielectric metasurface and the spiral phase of the second layer of dielectric metasurface to be subjected to wavefront phase modulation at the same time, and then an output synthetic phase is a spherical lens phase, so that output light with different wavelengths is focused at the same focus. According to the invention, chromatic aberration-free zooming of wide-spectrum incident light can be realized, the requirement of an extra working space is avoided, and the integration level and the imaging quality are high.