50results about How to "Avoid weight" patented technology

The invention provides automobile spare part hoisting equipment, and belongs to the technical field of automobile spare part hoisting, the automobile spare part hoisting equipment comprises an L-shaped hoisting plate, a sleeve and a hoisting ring assembly, and further comprises arc-shaped plates symmetrically arranged in the sleeve, the opposite faces of the two arc-shaped plates are connected with matched cushion covers, a pair of shifting plates is arranged outside the sleeve, and the shifting plates are connected with the L-shaped hoisting plate. The shifting plate is provided with guiding faces inclining downwards, the sleeve is provided with a connecting piece connected between the shifting plate and the arc-shaped plate, the L-shaped hanging plate is provided with an adjusting groove, and an adjusting assembly arranged on the adjusting groove is arranged between the two guiding faces in a linkage mode. The guide wheels in the adjusting assemblies move along the guide faces, the positions of the two arc-shaped plates are flexibly adjusted in the sleeves, and therefore the motor rotor shaft lifting device adapts to motor rotor shafts of different sizes, the sleeves do not need to be replaced, the structure is simplified, the maintenance cost is reduced, meanwhile, it is ensured that the motor rotor shafts are tightly clamped, and lifting safety and reliability are improved.

The utility model relates to the technical field of storage battery installation, and discloses a storage battery fixing device, a storage battery assembly and an operation machine. The storage battery fixing device is suitable for fixing a first storage battery and a second storage battery which are vertically arranged at an interval, and comprises a chassis suitable for placing the first storage battery; one end of each supporting rod is mounted on the chassis, and the supporting rods are suitable for surrounding the peripheral side of the first storage battery; the tray is mounted at the other end of the supporting rod, a gap is reserved between the tray and the upper surface of the first storage battery, and the tray is suitable for placing a second storage battery; and the limiting assembly is mounted on the tray and is suitable for surrounding the peripheral side of the second storage battery and the upper surface of the second storage battery. According to the utility model, the second storage battery can be arranged above the first storage battery by utilizing the plurality of supporting rods and the tray, so that the occupation of a horizontal space can be reduced. In addition, by arranging a limiting assembly on the tray, the stability of the second storage battery on the tray can be improved.

The invention provides an underwater vehicle charging system and a charging method, and solves the problem that the loading capacity, the operation time and the operation flexibility of an underwater vehicle are affected as a heavy coupler needs to be carried at the vehicle end in the conventional underwater vehicle wireless charging system. According to the invention, the permanent magnet synchronous motor which must be carried by the underwater vehicle is used for energy supply, the battery of the underwater vehicle is directly charged through the electromotive force generated by the reverse rotation of the permanent magnet synchronous motor, and the situation that the load is increased by a coupler installed at the vehicle end in the conventional wireless charging process is avoided. The charging system comprises a charging device arranged underwater and a one-way clutch arranged between a transmission shaft of a permanent magnet synchronous motor of the underwater vehicle and a propeller. The charging device comprises a base platform, a mobile platform, a motor, a charging rod, a fixed electromagnet, a communication unit and a control unit. The motor converts electric energy obtained by the charging device into mechanical energy which is transmitted to the permanent magnet synchronous motor transmission shaft through the charging rod to drive the transmission shaft to rotate reversely.

The utility model relates to the technical field of communication, and provides a coupling adjustment structure and a filter. The coupling adjusting structure comprises a coupling sheet, a bending sheet, a first mounting sheet and a second mounting sheet, the coupling sheet has a height direction, a thickness direction and a width direction which are vertical in pairs, the projection area of the coupling sheet in the thickness direction is larger than that of the coupling sheet in the width direction, and the bending sheet is connected to the side part of the coupling sheet in the width direction; the first mounting piece and the second mounting piece are connected to the bending piece at intervals in the height direction, and the first mounting piece and the second mounting piece protrude out of the outer side wall of the bending piece. The first mounting piece and the second mounting piece protrude out of the outer side wall of the bending piece and can clamp the two ends of a mounting hole of the cover plate, and the coupling adjusting structure can be rotatably arranged on the cover plate. The coupling adjustment structure is a sheet body structure, the structure is simple, the number of parts is small, the weight is greatly reduced, and concise and lightweight design of the coupling adjustment structure and the filter can be achieved.

The invention discloses a multi-purpose glasses frame and glasses without pressing the nose bridge and sliding down, and belongs to the field of glasses, the multi-purpose glasses frame comprises a pair of glasses frames or a pair of rimless glasses or a pair of eyebrow line frames and a pair of legs and / or a pair of glasses legs, the pair of legs further comprises a pair of blocking pieces protruding inwards and / or a pair of telescopic legs, and the pair of telescopic legs are connected with the pair of glasses frames or the pair of rimless glasses or the pair of eyebrow line frames. The inner side portions of the pair of telescopic ear legs are provided with suction cup pieces and / or rotatable abutting pieces and / or further comprise a pair of stopping pieces which abut against and limit the concave portion below the mastoid process of the head. A human cranium-ear groove part is used as a fulcrum of the glasses legs to overcome the weight of the front part of the glasses, and in addition, the problem that the head and the ears of a human body are difficult to match due to different shapes is solved by utilizing the matching conversion among the telescopic leg rods, the telescopic ear legs, the propping pieces and the like; the problem that local discomfort or injury is possibly caused by the weight of the nose bridge supported by the nose pad when people use the glasses is solved, the trouble that the glasses slide down is avoided, the stability and the comfort are improved, and in addition, the function that one pair of glasses has multiple purposes can be achieved.

The invention relates to the technical field of pump sets, in particular to an intelligent pump distribution system which comprises a base, a mounting structure, an electric gate valve, a one-way valve, a butt joint structure, a connecting structure, a supporting structure, a fixing structure and a control box. The service life of the pump set is prolonged, the butt joint structure facilitates quick installation of a pump set pipeline, repeated installation and disassembly of bolts are avoided, the installation efficiency is improved, the supporting structure is used in cooperation with the fixing structure, the supporting structure plays a role in supporting when the pipeline is installed, and the problem that the pipeline is difficult to install due to the large weight is solved. And the flexibility is improved.

The utility model relates to the technical field of anti -piercing clothes fabric, specifically disclose a kind of light anti -piercing clothes ventilation structure, including from outside to inside sequentially arranged outer protective layer, intermediate buffer layer and inner comfort layer, the intermediate buffer layer is by multiple independent and array distribution's buffer unit composition, first ventilation passage for air circulation is formed between adjacent the buffer unit, the side of inner comfort layer close to human skin is equipped with multiple three -dimensional convex structure, by constructing multilevel ventilation passage, effectively promote the air circulation and heat and moisture discharge in clothing inside and outside, solve the problem of traditional product stuffy and damp, protective layer structure in lightening overall weight, increase wearing flexibility and activity freedom aspect obvious advantage, in addition, the design structure is stable and reliable, good durability, applicable to the various service scene needing long time wearing anti -piercing clothes, significantly improve the wearing willingness and on-duty efficiency of user.

The application discloses a low-vibration active phase modulation composite pulse tube Stirling cryogenic refrigerator and belongs to the technical field of cryogenic refrigerators. The composite refrigerator cold finger integrates a first Stirling component as a high-temperature stage and a second pulse tube component as a low-temperature stage. The innovation is that the phase modulation unit of the second pulse tube component is composed of a second inertia tube wound and fixed in the inner circle of the gas reservoir, and the gas reservoir is integrally connected to the first cold end heat exchanger to improve the system efficiency through low-temperature arrangement. At the same time, the motion state of the compressor piston and the first displacer is monitored and cooperatively controlled in real time through the compressor displacement sensor and the cold finger displacement sensor, active and accurate phase modulation is realized, and the active vibration damper is used to perform reverse compensation according to the motion feedback of the first displacer to significantly offset the vibration output of the whole machine. The application realizes the unity of high efficiency, low vibration and high reliability, and is particularly suitable for vibration-sensitive space exploration and other application scenarios.

This utility model relates to the field of aluminum honeycomb panel technology and discloses a deformation-resistant support structure for lightweight aluminum honeycomb panels, including an upper aluminum plate and a lower aluminum plate. Both the upper and lower aluminum plates have slots, and clamping plates are fixed to the side walls of both plates. An upper cavity is formed in the upper aluminum plate, and a lower cavity is formed in the lower aluminum plate. A transverse support strip is installed in the lower cavity, and a longitudinal support strip is installed in the upper cavity. An upper placement groove is formed in the upper aluminum plate, and a lower placement groove is formed in the lower aluminum plate. An aluminum honeycomb core panel is clamped into the upper and lower placement grooves. This utility model eliminates the need to increase core density to improve strength, effectively controlling material usage and avoiding the weight and cost increases caused by core densification. Furthermore, it eliminates the need to increase aluminum plate thickness to enhance splicing strength, avoiding damage to the aluminum plate structure from openings and preventing weight increases caused by thickening the aluminum plate or adding fasteners.

This invention discloses a coupling and separation network for composite signal transmission, relating to the field of composite signal transmission. The coupling and separation network includes: a boost module for boosting an AC drive signal; a drive transmission module for transmitting the boosted AC drive signal and outputting it to a parallel resonant module via a cable; and a parallel resonant module for ensuring that the voltage and current on the coaxial cable are in phase. The boost module is connected to the drive transmission module, which in turn is connected to both the parallel resonant module and the boost module. This coupling and separation network drives three types of signals. Compared with existing technologies, the advantages of this invention are: it avoids the problems of relay mechanical reliability and transient interference caused by switching during composite signal transmission, and it utilizes a transducer-matched inductor to achieve high-voltage, high-power, low-frequency signal filtering, avoiding the size and weight costs associated with additional components.

The utility model discloses a long endurance and easily deploy data acquisition house, including bottom plate, the edge side fixed mounting of bottom plate top has the protection wallboard, the front side and rear side of protection wallboard top all have seted up solar panel limiting slot, the utility model relates to sensor data acquisition technical field. The long endurance and easily deploy data acquisition house, through the installation lithium cell with the utilization battery compartment connecting table, and install polycrystalline solar panel for lithium cell power supply, not only reduced the installation quantity of battery and alleviated the weight of whole, and this power supply mode greatly increased the endurance, very large extent solved the problem of short endurance, and in the battery compartment main part and the periphery and bottom of inductor deposit storehouse, utilize the protection wallboard and close, prevent the influence protection inductive component and the normal operation of battery of the aging and humid environment that solar exposure brings.

The invention discloses a motor rotor dynamic balance adjustment method, which comprises the following steps of S1, assembling a rotor shaft of a motor rotor on dynamic balance equipment, respectively selecting a left calibration part and a right calibration part at two ends of a rotor body of the motor rotor, and setting 0-degree positions on the left calibration part and the right calibration part; s2, calculating the allowable unbalance degree and the allowable unbalance amount of the rotor shaft to obtain the qualified amplitude of the rotor shaft; s3, driving the motor rotor to operate through dynamic balance equipment, and comparing to obtain an amplitude change curve of a first corrected end and an amplitude change curve of a first non-corrected end of the rotor shaft; and S4, actually measuring a left amplitude curve and a right amplitude curve of the rotor shaft in operation. Dynamic balance of the motor rotor is automatically detected, and automatic balance of the motor rotor is completed with high precision and high efficiency by adding materials.

This application belongs to the field of wind turbine technology, and particularly relates to a foldable horizontal blade device for wind turbines, including a rotating hinge base. The rotating hinge base includes a vertical shaft, on which multiple hinge seats are arranged. All the hinge seats are evenly arranged around the central axis of the vertical shaft. Blades are provided on the hinge seats and hinged to the hinge seats. A column is provided at the upper end of the rotating hinge base, and a fixed pulley group is provided at the upper end of the column. A rope winding and unwinding device is provided inside the column. A lifting rope is provided on the drive rod of the rope winding and unwinding device. The lifting rope passes through the fixed pulleys on the fixed pulley group and is connected to the blade. This application uses the connection between the blade and the rotating hinge base as the fulcrum, and uses the rope winding and unwinding device and the lifting rope to lift the blade, so that the blade can overcome its own weight and the blade length can be made longer. The angle between the blade and the horizontal plane can be changed, so as to enhance the wind energy capture capability.

The invention relates to the technical field of snore-ceasing pillows, and discloses an intelligent snore-ceasing pillow and a snore-ceasing method.The intelligent snore-ceasing pillow comprises a main body and a rotating rod, the rotating rod is fixedly connected to the top of the main body, the intelligent snore-ceasing pillow further comprises a supporting mechanism, and the supporting mechanism is arranged on the outer wall of the rotating rod and comprises a supporting plate. The density of the filling material in the snore-ceasing positioning pillow inner is large, so that the fitting degree of the snore-ceasing positioning pillow inner and the head can be increased, and the supporting effect of the snore-ceasing positioning pillow inner can be improved; the snore-stopping positioning pillow core between the head and the snore-stopping air bag is extruded to be flat by the snore-stopping air bag due to the fact that the snore-stopping positioning pillow core is soft, and the softness of the snore-stopping positioning pillow core is reduced after the snore-stopping positioning pillow core is pressed is avoided; therefore, the situation that a spherical surface with high hardness is formed after the snore-stopping air bag is fully inflated to jack up the snore-stopping positioning pillow inner which is flat after being pressed to make contact with the head of a user is avoided, and discomfort caused when the spherical surface makes contact with the head of the user is reduced.

The present invention discloses an air-cooling and heat dissipation system for a soft-pack battery pack for an unmanned aerial vehicle and a control method thereof. The air-cooling and heat dissipation system comprises a housing, a plurality of battery cells, a plurality of thermally conductive silicone pads and a temperature sensor arranged in the housing, an air inlet fan and an air outlet fan arranged outside the housing, and a controller; the temperature sensor, the air inlet fan, the air outlet fan, and the battery pack are all connected to the controller. The air-cooling and heat dissipation system of the present invention has a reasonable structural design, good heat dissipation effect, and can control the fan speed and the battery pack output power according to the battery pack temperature, so as to achieve the purpose of cooling the battery pack and keeping it within an appropriate temperature range, thereby ensuring the normal flight of the unmanned aerial vehicle.

The invention discloses a liquid crystal display panel detection mounting device, and relates to the technical field of liquid crystal display panel detection, the liquid crystal display panel detection mounting device comprises a mounting rack body, an electric feeding push rod and a material placing frame, the upper side of the mounting rack body is provided with the electric feeding push rod and a detection mounting box, and the bottom of the mounting rack body is provided with the material placing frame; and a guide wheel is mounted in the detection mounting box. According to the detection and installation device for the liquid crystal display panel, a driving motor drives a driving gear, a driven gear and a threaded adjusting rod to rotate synchronously through a coupler; while the threaded adjusting rod rotates synchronously, the threaded adjusting rod and a threaded hole in the sliding insertion block perform a threaded action to drive a material placing frame to move to the top along a limiting sliding groove in a limiting frame through convex blocks on the two sides, so that the detection and installation device of the liquid crystal display panel solves the problem that the liquid crystal display panel has a certain weight; and the weights of the materials are superposed after the materials are stacked in the storage box, so that the feeding work is inconvenient to carry out.

The utility model relates to the technical field of power semiconductor modules, in particular to a low-power-consumption power semiconductor module and a power terminal, which comprises a power input part, a power transmission part and a power output part, and the input end and the output end of the power transmission part are respectively connected with the power input part and the power output part; the power transmission part is of a hollow structure; the wall thickness of the power transmission part is 1-2 mm. By adopting the scheme, on the premise of controlling the cost, the effective current sectional area of the power terminal can be enlarged, and the increase of effective resistance caused by a skin effect is reduced, so that the power loss is reduced, and the performance of the semiconductor module is improved.

This invention relates to the field of composite material technology, specifically to an aramid honeycomb based on magnetic microwave absorbing prepreg and its preparation method. The aramid honeycomb includes an aramid honeycomb core and a magnetic microwave absorbing prepreg layer covering the surface of the honeycomb core. The magnetic microwave absorbing prepreg, by mass percentage, contains 25%-30% magnetic microwave absorbing component, 40%-45% resin matrix, 20%-25% reinforcing fiber, 5%-8% dispersant (based on the magnetic microwave absorbing component), and a curing agent with a mass ratio of 1:1.2 to the resin matrix. The magnetic microwave absorbing component is selected from one or more of coated Fe3O4@SiO2 nanoparticles, nickel-doped MXene (Ni-Ti3C2), and ultrafine Fe-Si-Cr alloy powder, mixed in any proportion. The resin matrix is ​​E-51 modified epoxy resin with a glass transition temperature Tg ≥ 120℃; the reinforcing fiber is para-aramid fiber cloth (Kevlar49) with a length of 0.15 micrometers to 0.5 millimeters; the dispersant is polyetherimide (PEI); and the curing agent is methyltetrahydrophthalic anhydride (MeTHPA).

The gift box with the product suspension effect display function comprises a left box body and a right box body, the left box body and the right box body are closed or opened in a left-right involution mode through a sliding mechanism between the left box body and the right box body, and when the left box body and the right box body are opened, a magnetic attraction device is arranged on the upper portion of the space between the left box body and the right box body; the magnetic attraction device comprises a coil and an iron core which are arranged in the shell, the coil winds the iron core, and the coil is powered on or powered off to control generation or disappearance of magnetism of the iron core; the top part of the product is made of metal, and the attraction force of the magnetic attraction device and the top part of the product overcomes the gravity of the product, so that the product is suspended in the air. The left box body and the right box body are oppositely closed to be powered off and opened to be powered on, the magnetic attraction device generates a magnetic field, product weight is overcome, products are displayed in the air in a suspended mode, product characteristics are three-dimensionally highlighted, and the product display effect is improved.

The utility model discloses a modularized pre-charging circuit assembly of an electric automobile. The modularized pre-charging circuit assembly comprises a semiconductor switch which is packaged in a flat standard mode and a pre-charging resistor which is packaged in a flat mode. The pre-charging circuit assembly is electrically connected with the main positive loop through wires and pins on the PCBA board. According to the utility model, the pre-charging circuit assembly is independently produced, so that when the arrangement space of the BDU is insufficient, the pre-charging circuit assembly can be independently arranged and is connected with the main positive loop only through a small number of thinner non-power connecting wire harnesses; the problems of weight and cost rise caused by increase of the use amount of long copper bars due to separate arrangement of high-power loops in the prior art I are avoided; meanwhile, due to the standardized design of the pre-charging circuit assembly, the development and material cost can be reduced, and the problems of high mold cost and long mold opening period caused by customized non-standard special-shaped parts in the prior art II are solved.

An optical display apparatus, a display system, a vehicle, and a color adjustment method are provided to resolve a problem of an image color cast in the conventional technology, and can be applied to fields such as manual driving or an in-vehicle infotainment. The optical display apparatus includes: a light source module, configured to emit light (where the light is combined by light of at least two colors); a light splitting module, configured to split the light into a first path of light and a second path of light, propagate the first path of light to a sensing module, and propagate the second path of light to a modulation module; the modulation module, configured to modulate the second path of light, to obtain image light that carries image information; and the sensing module, configured to obtain color information of the first path of light, where the color information is for adjusting weights of the light of the at least two colors. The first path of light is used as color calibration of the light, the color information is obtained based on the first path of light, and the weights of the light of the at least two colors are adjusted based on the color information, so that color correction of the image light can be implemented, thereby helping reduce a color cast of an image formed by the image light.

The utility model discloses a universal stepless rotation locking magnetic type flashlight tail and a flashlight. The flashlight tail comprises a universal adjusting assembly and a magnetic assembly. The universal adjusting assembly comprises a tapping steel ball, a steel ball seat, a silica gel support, a steel ball seat locking ring, a cylinder tail sleeve and a cylinder tail body. The tapping steel ball is fixed in the steel ball seat and can rotate in the steel ball seat at multiple angles; the silica gel bracket is arranged between the tapping steel ball and the steel ball seat; the steel ball seat is fixed with the cylinder tail main body through a steel ball seat locking ring; a barrel tail sleeve sleeves the outer side of the barrel tail main body; the magnetic attraction assembly comprises a magnet base with a stud, a magnet fixing frame, a fixing screw and a magnet. The magnet fixing frame is fixed with the magnet seat through a fixing screw; the magnet is mounted on the magnet fixing frame; the stud of the magnet seat is screwed into the tapping steel ball, so that the magnetic attraction assembly and the universal adjusting assembly are fixed. According to the technical scheme provided by the utility model, the weight of the flashlight can be overcome, and the flashlight has a stable illumination angle at a preset mounting position, so that an ideal illumination effect is achieved.

The embodiment of the invention relates to the technical field of electronic reconnaissance, in particular to an ultra-wideband electronic reconnaissance load based on electro-optical sensing, which comprises an antenna module, a photoelectric receiver module, a signal processing module, a Beidou time service module, a secondary power supply module and an air cooling case, and all the modules except the antenna module are arranged in the air cooling case; the antenna module receives radio frequency signals of each frequency band in real time; the photoelectric receiver module performs low-noise amplification, electro-optical compression conversion and photoelectric conversion on the radio-frequency signals of each frequency band, down-converts high-frequency signals distributed in an ultra-wideband range into a repetition frequency interval of the optical frequency comb laser source for processing, and obtains and outputs two paths of compressed intermediate-frequency signals after low-pass filtering; and the signal processing module carries out identification analysis based on the two compressed intermediate frequency signals to obtain IQ data and time frequency parameters and outputs the IQ data and the time frequency parameters to external terminal equipment. The load realizes instantaneous and ultra-wideband electromagnetic target coverage, and has the capability of intercepting burst communication electromagnetic information.

A method of exchanging data between a first aerosol-generating device and a second aerosol-generating device, the method comprising: activating a wireless communication interface of the first aerosol-generating device when the first aerosol-generating device is in a predetermined state associated with aerosol generation; determining that at least one trigger event has been detected by a detection unit of the first aerosol-generating device distinct from the wireless communication interface; and performing data exchange with the second aerosol-generating device via the wireless communication interface in response to detecting the at least one trigger event when the first aerosol-generating device is in the predetermined state.

The utility model provides a pay-off device. The pay-off device comprises a support and a pay-off device body, the rotating assembly is rotatably arranged on the support, and the rotating assembly comprises a rotating shaft; the pay-off barrel is arranged on the rotating shaft in a sleeving mode, the pay-off barrel is used for winding a connecting rope and is fixedly connected with the rotating shaft, a fixing structure is arranged between the support and the pay-off barrel, the fixing structure has a fixing state and an avoiding state which are oppositely arranged, and when the fixing structure is in the fixing state, the fixing structure can stop rotation of the pay-off barrel; when the fixing structure is in the avoiding state, the rotating assembly can drive the pay-off barrel to rotate. Through the technical scheme provided by the invention, the problems of high labor intensity and low accuracy of workers in the checking process in the prior art can be solved.

The utility model discloses a quadruped robot wheel foot cover tire, which is in a circular ring shape and comprises a mounting area, a tire cover and a tire cover, and is characterized in that the mounting area is used for connecting a quadruped robot wheel hub; the buffer area is provided with a hollow part, and the hollow part extends inwards from the outer side face in the width direction of the outer tire; the action area can be in contact with the ground, and anti-skid ribs are formed in a circle in the circumferential direction; the mounting area, the buffer area and the action area are sequentially arranged outwards in the radial direction from the center of the outer tire and are concentric and coaxial. The utility model further discloses a quadruped robot wheel foot. Due to the arrangement of the hollow parts in the buffer area, the weight of the outer tire is reduced, vibration generated by the outer tire can be effectively absorbed, and the movement stability of the quadruped robot is high due to the overall structure; the mounting area, the buffering area and the acting area are sequentially and concentrically arranged from inside to outside, the stability of the hub in the circumferential direction in the movement process is guaranteed, and deviation and even slipping are avoided.

Provided are an electric component unit, and a heat source unit for a refrigeration cycle apparatus, which allow an improvement in the maintainability of electric components. An outdoor control unit (50) provided in an outdoor unit (2) of a refrigeration cycle apparatus (1) includes: first to third boards (61 to 63); fourth to fifth boards (64 to 65); a mounting plate (58) having a first plane (58x) to which the first to third boards (61 to 63) are attached and a second plane (58y) to which the fourth to fifth boards (64 to 65) are attached; and an electric component casing (50a) having an electric component maintenance opening (50x). The mounting plate (58) and the electric component casing (50a) are coupled to each other via a lower surface portion (58d) and a fixation member (56y). The outdoor control unit (50) switches between a state in which the first to third boards (61 to 63), the fourth to fifth boards (64 to 65), and the mounting plate (58) are housed in the electric component casing (50a), and a state in which the position of the first to third boards (61 to 63), the fourth to fifth boards (64 to 65), and the mounting plate (58) with respect to the electric component maintenance opening (50x) is changed by rotation of the mounting plate (58).

The utility model discloses a corn seed quality sorting device which comprises a box body and a supporting sleeve, a discharging assembly is installed on the top of the box body, the discharging assembly comprises a hopper and a discharging valve, a screening assembly is installed on the inner side of the box body, the screening assembly comprises a screening plate and a supporting plate, and the supporting plate is installed on the box body. The bottom of the sieve plate is provided with a guiding-out assembly, the guiding-out assembly comprises a first inclined plate and a second inclined plate, the second inclined plate is provided with a pushing assembly, and the pushing assembly comprises a motor and an eccentric wheel. According to the corn seed screening device, the situation that the amount of corn seeds on the screening plate is large is effectively avoided, then the situation that screening is not thorough is prevented, the sorting effect of the corn seeds is guaranteed, impurities are filtered at the bottom of the filter screen, cleaning work is conducted through the filter screen, chippings are prevented from flying outwards, safety of the environment around the device is guaranteed, and the corn seed screening device is suitable for corn seed sorting.

The invention relates to the technical field of electronic reconnaissance, in particular to an ultra-wideband lightweight electromagnetic reconnaissance receiver based on electro-optical sensing. The receiver comprises an optical frequency comb pulse laser source M1, an optical frequency comb pulse laser source M2, a low-noise amplifier LNA1, a low-noise amplifier LNA2, a numerical control attenuator AGC, a power divider PS, a polarization controller PC1, a polarization controller PC2, an electro-optical modulator MZM1, an electro-optical modulator MZM2, a photoelectric detector PD1, a photoelectric detector PD2, an optical coupler OC1, an optical coupler OC2, a low-pass filter LF1 and a low-pass filter LF2. The output end of the low-pass filter LF1 and the output end of the low-pass filter LF2 are connected with the signal processing module FPGA; the low noise amplifier LNA1 is connected with the output end of the antenna RA, and the radio frequency output of the antenna RA is divided into two paths to enter the electro-optical modulator MZM1 and the electro-optical modulator MZM2 after passing through the power divider PS. The receiver can realize instantaneous electromagnetic information interception in an ultra-wideband range on the basis of meeting the index of light weight of equipment.