Patents
Literature
33results about How to "Easy to achieve modularity" patented technology
Efficacy Topic
Property
Owner
Technical Advancement
Application Domain
Technology Topic
Technology Field Word
Patent Country/Region
Patent Type
Patent Status
Application Year
Inventor
Beam shaping illumination system of semiconductor laser array
InactiveCN101545582AImprove utilization efficiencyReduce the numberSemiconductor laser arrangementsLaser arrangementsBeam transmissionLight source
The invention discloses a beam shaping illumination system of a semiconductor laser array, which comprises the semiconductor laser array, an optical system for transforming beam divergence angles of a fast axis, a device for deflecting angles of beams in the fast axis direction, and an optical system for transforming divergence angles of a slow axis and deflecting the beams in the slow axis direction. The system has a key point that the superposition effect of Gaussian beam parts of a plurality of laser units is formed in a distant field by controlling the deflection degree of beam transmission axes of each laser unit in the fast axis and slow axis directions respectively so as to construct illumination beams according with field coverage requirements. The system has the characteristics of high efficiency, simple structure, low cost, integration and practicability, and is particularly applicable as an illumination light source of area array imaging laser radar and active laser illumination detecting systems.
Owner:ZHEJIANG UNIV
Buckling fuzz button electric connector
ActiveCN105576407AEasy to useImprove maintainabilityCoupling contact membersCouplings bases/casesElectricityElectrical conductor
The invention discloses a buckling fuzz button electric connector comprising metal conductors and an insulating base. Each metal conductor comprises an upper fixing cap, a fuzz button and a lower fixing cap. The insulating base comprises a lower base and an upper base. The fuzz button is arranged in the upper base, and the two ends of the fuzz button are fixed by the upper fixing cap and the lower fixing cap respectively. The front part of the lower base is provided with a buckle. The internal side surface of the buckle is provided with a buckle chamfer. The front part of the upper base is provided with base slots. The slot walls of the base slots are inwardly slotted so that clamping slots are formed. The lower base and the upper base are locked through the buckled and the clamping slots. Fine metal lines are wound into a cylinder structure by the fuzz button. The electric connector is rapid in assembling and convenient to maintain and disassemble so that reliable transmission of the electric signals of the electric connector can be realized, the electric connector is suitable for connection of the circuits between printed circuit boards requiring large-scale utilization of the electric connector, the development requirements of miniaturization and dwarfing can be met, and thus the electric connector has high anti-vibration and anti-impact performance and meets the environmental use requirements.
Owner:GUIZHOU SPACE APPLIANCE CO LTD
Drive axle for electric vehicle or hybrid electric vehicle
ActiveCN101890908ASave spaceIncrease the number ofElectric propulsion mountingGas pressure propulsion mountingEngineeringElectric vehicle
The invention discloses a drive axle for an electric vehicle or a hybrid electric vehicle. The drive axle comprises a motor stator, a differential, a driving conical gear, a damping steering shaft, a damping spring and a steering input conical gear, wherein the motor stator is fixed on a vehicle body; the differential is fixedly connected with a motor rotor; the driving conical gear is arranged at the output end of an axle shaft; the middle of the damping steering shaft is provided with a steering output conical gear; the lower part of the damping steering shaft passes through a shaft barrel;the shaft barrel is provided with a first conical gear and a second conical gear; the steering input conical gear is engaged with the steering output conical gear; a driving input conical gear is engaged with a first spline conical gear and a driving output conical gear at one end of a wheel driving shaft; and the other end of the wheel driving shaft is connected with wheels in a matching way. The drive axle has the advantages of compact structure, vehicle space saving, gear transmission among functional parts, high efficiency, long service life and convenient disassembly and maintenance.
Owner:CHONGQING CHANGAN AUTOMOBILE CO LTD
All-fiber Fourier transform Raman spectrometer
InactiveCN105241550AReduce volumeDemodulation speed is fastRadiation pyrometryInterferometric spectrometryOptical path lengthSpectrometer
The invention discloses an all-fiber Fourier transform Raman spectrometer, which includes transmission fibers, a laser, a fiber Raman probe, an all-fiber dual-beam interference system, and a photomultiplier. The laser, the fiber Raman probe, the all-fiber dual-beam interference system and the photomultiplier are associated with each other by means of the transmission fibers. The laser is irradiated on a sample through the fiber Raman probe and forms Raman diffusion light. The Raman diffusion light is collected by the fiber Raman probe and enters the all-fiber dual-beam interference system, and therefore two paths of interference light are formed. One light path of the two paths of interference light is modulated by a phase modulator in the all-fiber dual-beam interference system, and the modulated interference light is output to the photomultiplier and converted into an electric signal. Fourier transform of Raman spectrum is achieved and then spectrum demodulation is realized by means of the all-fiber dual-beam interference system, and dual-beam light path difference modulation is performed by an all-fiber phase modulator. The all-fiber Fourier transform Raman spectrometer, becoming miniature, is high in resolution, high in signal to noise ratio, wide in spectrum scope and low in cost.
Owner:CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST
Connection structure of balance car frame
InactiveCN108357605AOutstanding and Beneficial Technical EffectsEasy to rotate connectionMotorcyclesVehicle frameEngineering
Owner:吕林宝
Novel modular multilevel converter submodule topology circuit and control method thereof
ActiveCN110417290AAvoid flowingSuppress fault currentThyristorAc-dc conversionMOSFETElectric power system
The invention discloses a novel modular multilevel converter submodule topology circuit and a control method thereof. The invention relates to the field of power system DC power transmission and distribution protection control, in particular to an MMC sub-module topology circuit with DC side fault ride-through capability and a control method thereof. The invention provides the novel modular multilevel converter sub-module topology circuit is high in modular degree, higher in reliability, higher in forward and reverse fault current suppression capacity and more balanced and the control method thereof. The circuit comprises a wire inlet port X and a wire outlet port Y, wherein at least two half-bridge sub-modules are connected in series between the wire inlet port X and the wire outlet portY, each half-bridge sub-module is provided with an input port, a first output port and a second output port, and the power switch device can be an IGBT or an MOSFET. The circuit has very strong faultcurrent suppression capability.
Owner:JIANGSU ELECTRIC POWER CO +2
Flowing phase-change energy storing type falling-film evaporating heat pump unit
ActiveCN104406329AReasonable structureGuaranteed uniformityHeat pumpsRefrigeration safety arrangementEmulsionEnergy coupling
The invention provides a flowing phase-change energy storing type falling-film evaporating heat pump unit. The flowing phase-change energy storing type falling-film evaporating heat pump unit is that an inner water pipe inlet, a medium water pipe inlet and an outer water pipe inlet are all connected with a pump-out end of a water pump; an inner water pipe outlet, a medium water pipe outlet and an outer water pipe outlet are all connected with an inlet of a solar thermal collector; an outlet of the solar thermal collector is connected with a suction inlet of the water pump through a second pipeline; the outlet end of a phase-change micro-emulsion discharge pipe is connected with the suction end of a stainless steel magnetic pump; the inlets of a plurality of groups of phase-change micro-emulsion external surface enhanced pipe bundles are all connected with the pump-out end of the stainless steel magnetic pump, and the outlets of the plurality of groups of phase-change micro-emulsion external surface enhanced pipe bundles are all connected with a phase-change micro-emulsion feeding pipe of an energy storing tank; and an electric four-way reversing valve and a falling-film energy storing evaporating device are respectively connected with a compressor, an outdoor side fin type tubular air heat exchanger and a refrigerant / water drying type heat exchanger. The flowing phase-change energy storing type falling-film evaporating heat pump unit is applied to a solar energy and air energy coupling heat pump system.
Owner:HARBIN INST OF TECH
Magnetic suspension cylindrical linear movement guide rail pair
InactiveCN102626867AEasy to processNo wearLarge fixed membersMagnetic holding devicesNumerical controlEngineering
The invention discloses a magnetic suspension cylindrical linear movement guide rail pair. The magnetic suspension cylindrical linear movement guide rail pair comprises supporting racks which are installed at the two ends of a pedestal, cylindrical supporting guide rails which are installed on the supporting racks, and magnetic suspension movable guide rails and magnetism isolating plates which are sleeved on the cylindrical supporting guide rails, and an organ-type shield, wherein the magnetism isolating plates are installed on the two sides of the magnetic suspension movable guide rails; displacement sensors are installed in the circumferential directions of the magnetism isolating plates; and a counter bore is formed on the pedestal and is used for installing the guide rail pair on a lathe body. The magnetic suspension cylindrical linear movement guide rail pair is reasonable in structure, integrates the advantages that the cylindrical guide rails are easy to process and magnetic suspension supports are free of contact and abrasion, high in speed, high in precision and are not required to be lubricated and sealed, can structurally decouple magnetic fields between a power source and the magnetic suspension guide rail pair and each magnetic support in the magnetic suspension guide rails easily, can serialize and modularize functional components of a lathe easily, and can meet a requirement for the performance of a linear feeding system of a high-speed and high-precision numerically-controlled lathe.
Owner:NANTONG UNIVERSITY
Roller press and high pressure roller mill combination set roller shaft
InactiveCN102274774AReduce difficultyProduct quality is easy to guaranteeGrain treatmentsManufacturing engineeringRoller mill
The invention discloses a roller shaft combined with a roller press and a high-pressure roller mill, and relates to a roller shaft of a roller press and a high-pressure roller mill, including a shaft core and a shaft sleeve, and the shaft sleeves are at least two The combination sleeve is arranged and combined along the axial direction. The invention is a roller press and a high-pressure roller mill that are less difficult to manufacture, can effectively guarantee product quality, have interchangeability between different models, have a short production cycle, and can realize serialization, modularization, and large-scale production. Squeeze roller shaft.
Owner:CHENGDU LEEJUN IND
Automatic sludge fuelization apparatus and method based on solar energy greenhouse
ActiveCN109020146ASimple structureLess componentsSludge treatment by de-watering/drying/thickeningBiofuelsCombustionGreenhouse
For solving recycling utilization of sludge, the invention discloses an automatic sludge fuelization apparatus based on a solar energy greenhouse. The apparatus includes: a pretreatment device, a drying device and a control device. The pretreatment device is located at the upper part of the drying device. The pretreatment device and the drying device are respectively connected to the control device. The invention also discloses an automatic sludge fuelization method based on the solar energy greenhouse, wherein the method includes: according to certain ratio, adding the sludge powder, a dryingagent and a combustion improver into the pretreatment device, uniformly stirring the components, and automatically feeding the stirred mixture into the drying device by means of the control device toachieve the drying process of the sludge by means of greenhouse effect of solar energy and suction effect of a chimney. The invention belongs to the technical field of sludge treated. The apparatus and method can achieve fuelization utilization and recycling treatment of sludge. The product can replace a part of fossil energy and has a huge economic benefit.
Owner:HARBIN INST OF TECH
Ultrasonic transducer device for geometric shape array of planar corrosive defect
InactiveCN102507748ARealize detectionImprove detection efficiencyMaterial analysis using sonic/ultrasonic/infrasonic wavesMultiway switchingSonification
The invention relates to an ultrasonic transducer device for a geometric shape array of a planar corrosive defect. The ultrasonic transducer device comprises a piezoelectric ultrasonic transducer group which is used for generating and receiving ultrasonic waves, a fixing bracket which is used for fixing piezoelectric transducers, a module which is used for exciting the operation of the piezoelectric transducers and adjusting a received signal and a multi-way switch which is for controlling the ultrasonic waves generated and received by the piezoelectric transducers, wherein the piezoelectric transducer group is fixed on the bracket according to a certain geometric location relationship to form a specific array device; and the piezoelectric transducers are flexibly connected with the fixing bracket through sliding sleeves and pre-tightening springs to realize close contact between each transducer and a piece to be detected. The ultrasonic transducer device for the geometric shape array of the planar corrosive defect, disclosed by the invention, has the advantages that: as the geometric shape array of the defect can be detected through fixing the transducers, high detection efficiency is obtained; as a sound field can cover all regions inside the array, high detection precision is obtained; as transducer configuration with uniform performance and type is adopted, modularization can be realized conveniently; and as the ultrasonic transducer device can be applied to the nondestructive detection of regular ultrasonic industry and occasions with special requirements, the ultrasonic transducer device is wide in application range.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY
Electric automobile integrated thermal management system mode switching method
InactiveCN112572095ASolve control problemsEasy to achieve modularityAir-treating devicesCell temperature controlHeat managementDriver/operator
The invention provides an electric automobile integrated thermal management system control method, which is characterized in that: electric automobile thermal management is divided into three sectionsincluding a passenger compartment, a battery and a motor / electric controller, and the control method comprises the steps of: (1) collecting driver operation signals, environment information and partstates, and putting forward the mode switching requirements of all the sections; (2) performing switching to a corresponding thermal management mode according to the mode switching requirement of eachsection; (3) controlling a corresponding actuator to actuate according to the thermal management mode of each section; and (4) since the system has a certain integration degree, when the modes of thesections are switched, partial actuator actions possibly conflict, so that priority judgment is performed on the conflicting actions, the sections are perfectly matched, and a required mode is smoothly switched.
Owner:JILIN UNIV
Flowing phase change and energy storage falling film evaporative heat exchange device
ActiveCN104501469AHigh heat transfer efficiencyGuaranteed uniformityMechanical apparatusEvaporators/condensersWater pipeSolar thermal collector
The invention relates to a flowing phase change and energy storage falling film evaporative heat exchange device. An inlet of a water pipe is connected with a pressing-out end of a water pump, an outlet of a water pipe is connected with an inlet of a solar heat collector through a first pipeline, an outlet of the solar heat collector is connected with a sucking-in opening of the water pump through a second pipeline, a first electromagnetic valve is arranged at the inlet end part of the solar heat collector, a second electromagnetic valve is arranged at the outer end part of the solar heat collector, a third electromagnetic valve is arranged on a third pipeline, a fourth electromagnetic valve is arranged on a fourth pipeline, the outlet end of a phase change microemulsion discharging pipe is connected with the sucking-in end of a stainless steel magnetic pump, an inlet of each of a plurality of groups of phase change microemulsion outer surface reinforcing pipe beams is communicated with one end of a fifth pipeline, the other end of the fifth pipeline is connected with the pressing-out end of the stainless steel magnetic pump, an outlet of each of the plurality of groups of phase change microemulsion outer surface reinforcing pipe beams is communicated with one end of a sixth pipeline, and the other end of the sixth pipeline is connected with a phase change microemulsion feeding pipe of an energy storage tank. The flowing phase change and energy storage falling film evaporative heat exchange device can be used in a solar-air energy coupling heat pump system.
Owner:HARBIN INST OF TECH
Electromagnetic driving vacuum die-casting machine
InactiveCN111230065APrevent crystallizationSolve the characteristics of poor vacuum sealingEngineeringMechanical engineering
The invention provides an electromagnetic driving vacuum die-casting machine. The electromagnetic driving vacuum die-casting machine comprises a driving assembly, a fixed die assembly, a movable die assembly and an executing assembly; a rear cover and a heat insulation plate are respectively positioned at the two ends of a cylindrical shell; a stator ferromagnetic ring is positioned inside the cylindrical shell; a rotor sleeve is positioned inside the stator ferromagnetic ring; a stator winding is connected with an iron core of the stator ferromagnetic ring; stator magnetic isolation rings areuniformly distributed on the inner surface of the cylindrical shell; rotor fan-shaped salient poles are uniformly distributed on the rotor sleeve; a fixed die plate is connected with a fixed die; thefixed die is connected with a movable die; the movable die is connected with a movable die plate; a pressure chamber is positioned inside a rectangular shell, the fixed die plate and the fixed die; amolten metal pouring gate is positioned at the upper part of the second end of the pressure chamber; the first end of the pressure chamber is connected with an inflow hole of a transverse pouring channel; the first end of an injection rod is connected with the rotor sleeve; the second end of the injection rod is connected with an injection plunger; and the injection plunger is positioned at the second end of the pressure chamber. According to the electromagnetic driving vacuum die-casting machine, the starting time can be shortened through the electromagnetic driving, the speed required by injection can be reached in a very short time, the eddy current loss is small, and the electromagnetic driving vacuum die-casting machine has the characteristics of large average injection force.
Owner:YANSHAN UNIV
Three-axis mems inertial sensor system-in-package unit structure
ActiveCN105716606BImprove adaptabilityAdaptableNavigation by speed/acceleration measurementsElectrical connectionModularity
The invention relates to the technical field of three-dimensional integrated circuit application, and provides a system-in-package unit structure of a triaxial MEMS (micro-electromechanical system) inertial sensor. The system-in-package unit structure comprises a cuboid substrate and a metallized pattern which is plated on the surface of the substrate and used for electrical connection of the MEMS inertial sensor; orthogonal encapsulation of the triaxial MEMS inertial sensor is unitized, polished ALN is taken as a base material, and requirements for low stress, flatness and orthogonality of assembly of the MEMS inertial sensor are met; the metallized pattern has very good adaptability and can meet the assembly requirement of multiple types of MEMS inertial sensors; with the adoption of the unitized encapsulation structure form, modularization and standardization of the triaxial inertial sensor unit are conveniently realized, triaxial orthogonal assembly of the sensor can be realized without installation of any bracket, the size and the weight are reduced, the efficiency is improved, errors are reduced, the cost is low, the applicable range is wide, and the practicability is high.
Owner:NO 43 INST OF CHINA ELECTRONICS TECH GRP CETC
Clutch-based planetary gear shifting electric drive axle
PendingCN113910881AThe overall structure is simpleHighly integratedElectric propulsion mountingAxle unitsElectric driveClutch
The invention discloses a clutch-based planetary gear shifting electric drive axle, and belongs to the technical field of power assemblies, and the clutch-based planetary gear shifting electric drive axle comprises a left half shaft, a right half shaft, a drive motor, a first transmission gear, a second transmission gear, a third transmission gear, a fourth transmission gear, a planetary transmission mechanism, a lock-up clutch, a clutch and a differential mechanism; the first transmission gear is connected with a motor rotor and is meshed with the second transmission gear; the second transmission gear is connected with the third transmission gear and is meshed with the fourth transmission gear; the fourth transmission gear is connected with a sun gear; a planet carrier is connected with the differential mechanism; the left half shaft penetrates through the motor rotor, the fourth transmission gear and the middle of the sun gear. Power is outputted to the sun gear, different coupling of the power is achieved through combination and separation of the clutch and the lock-up clutch, and the differential mechanism distributes the power to the two half shafts. The driving motor, the clutch and the axle are integrated, the transmission shaft is omitted, the power system is more compact, and chassis specialization and power assembly serialization can be achieved conveniently.
Owner:SINO TRUK JINAN POWER
Two-degree-of-freedom parallel mechanism
InactiveCN107414798AAdaptableEasy to manufactureProgramme-controlled manipulatorKinematic chainTwo degrees of freedom
The invention relates to a moving mechanism, in particular to a two-degree-of-freedom parallel mechanism. The two-degree-of-freedom parallel mechanism comprises a base, drive mechanisms, an upper platform, a lower platform and kinematic chains. The lower platform and the two drive mechanisms are arranged on the base. The upper platform is arranged above the lower platform and is connected with the lower platform through the multiple kinematic chains. The two drive mechanisms are correspondingly connected with the two kinematic chains. Each kinematic chain comprises a swing rod joint and two L-shaped swing rods. Every two L-shaped swing rods are correspondingly located on the two opposite sides of the upper platform or the lower platform. One ends of every two L-shaped swing rods are correspondingly and rotationally connected with the upper platform and the lower platform through rotary shafts, and the other ends of every two L-shaped swing rods are connected with the corresponding swing rod joint. The upper platform is driven by the two drive mechanisms to do pitching or yawing motion. The two-degree-of-freedom parallel mechanism has the flexible rotating capacity, is of a compact structure, is suitable for various application occasions and can reach the normal direction of any point of the whole hemispherical surface.
Owner:SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI
Multi-mode electric drive axle based on clutch coupling
PendingCN113910880AEasy to achieve modularitySave spaceElectric propulsion mountingAxle unitsGear wheelCoupling
The invention discloses a multi-mode electric drive axle based on clutch coupling, and belongs to the technical field of power assemblies. The multi-mode electric drive axle comprises a left half axle, a right half axle, a drive motor, a first transmission gear, a first clutch, a differential mechanism, a second transmission gear, a second clutch, a planetary transmission mechanism, a lock-up clutch and a third transmission gear. The first transmission gear is connected with the motor rotor and the first clutch and is meshed with the second transmission gear; the second transmission gear is connected with the sun gear and the second clutch; the lock-up clutch is connected with a vehicle body axle housing; the planet carrier is connected with the differential through the third transmission gear; the left half shaft penetrates through the motor rotor, the first transmission gear and the first clutch and is connected with the differential mechanism; the right half shaft is connected with the differential mechanism. Different coupling modes are achieved through combination and separation of the second clutch, the first clutch and the lock-up clutch, the differential distributes power, and power transmission is achieved. The integration degree is high, the dynamic property and economical efficiency are improved, and chassis specialization and power assembly serialization can be achieved conveniently.
Owner:SINO TRUK JINAN POWER
A Novel Modular Multilevel Converter Sub-module Topology Circuit and Its Control Method
A novel modular multilevel converter sub-module topology circuit and its control method. The invention relates to the field of DC transmission and distribution protection and control of power systems, in particular to an MMC sub-module topology circuit with DC side fault ride-through capability and a control method thereof. Provided are a new modular multilevel converter sub-module topology circuit and a control method thereof with high modularization degree, higher reliability, stronger forward and reverse fault suppression current capability, and more balanced. Including an incoming line port X and an outgoing line port Y, at least two half-bridge sub-modules are connected in series between the incoming line port X and the outgoing line port Y, the half-bridge sub-module has an input port, an output port 1 and an output port 2, The power switch device can be IGBT or MOSFET. The invention has strong fault current suppression ability.
Owner:JIANGSU ELECTRIC POWER CO +2
A combined straightening machine
The invention discloses a combined type straightening machine. The combined type straightening machine comprises at least three detachable straightening roll devices. Each straightening roll device is connected with a drive device. Every two adjacent straightening roll devices are movably connected and arranged in an up-down staggered mode. Plates or profiles are straightened by the straightening roll devices by penetrating through the straightening roll devices which are arranged in the up-down staggered mode. According to the combined type straightening machine, the straightening roll devices are movably connected and arranged in the up-down staggered mode, and compared with an existing straightening machine of a fixed structure, the roll number and the roll distance of the straightening machine can be changed by increasing or decreasing the number of the straightening roll devices according to needs without replacing the whole straightening machine. The weight of a machine frame of the straightening machine can be lowered, the size can be decreased, the rigidity can be improved, and the straightening technological requirement of the plates or profiles of different thicknesses can be met. Moreover, each straightening roll device is connected with the corresponding drive device, and the roll speed of each straightening roll device can be automatically adjusted, so that the plates or the profiles are better straightened.
Owner:TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
Drive axle for electric vehicle or hybrid electric vehicle
ActiveCN101890908BSave spaceIncrease the number ofElectric propulsion mountingElectric machinesEngineeringElectric vehicle
Owner:CHONGQING CHANGAN AUTOMOBILE CO LTD
Spray Plating Unit for Terminal Electrodes
The invention discloses a jet electroplating device applicable to a terminal electrode. The jet electroplating device comprises a plating solution storage box used for storing a plating solution, a jet assembly, an electroplating power source and a controller, wherein the jet assembly is connected with the plating solution storage box and is opposite to a plating piece; the jet assembly, the plating piece and the electroplating power source are connected to form a closed electroplating loop; and the controller is connected with the electroplating power source and the jet assembly, and is used for controlling currents and / or voltage externally added on the closed electroplating loop. According to the jet electroplating device, the automation is achieved under the control of the controller; and besides, the device is water-saving and electricity-saving, and is small is floor space, so that the modularization of the electroplating procedure is achieved, and the automation upgrading of the production line is accelerated.
Owner:SHENZHEN ZHENHUA FU ELECTRONICS +1
Beam shaping illumination system of semiconductor laser array
InactiveCN101545582BImprove utilization efficiencyReduce the numberSemiconductor laser arrangementsLaser arrangementsLaser arrayDivergence angle
The invention discloses a beam shaping illumination system of a semiconductor laser array, which comprises the semiconductor laser array, an optical system for transforming beam divergence angles of a fast axis, a device for deflecting angles of beams in the fast axis direction, and an optical system for transforming divergence angles of a slow axis and deflecting the beams in the slow axis direction. The system has a key point that the superposition effect of Gaussian beam parts of a plurality of laser units is formed in a distant field by controlling the deflection degree of beam transmission axes of each laser unit in the fast axis and slow axis directions respectively so as to construct illumination beams according with field coverage requirements. The system has the characteristics of high efficiency, simple structure, low cost, integration and practicability, and is particularly applicable as an illumination light source of area array imaging laser radar and active laser illumination detecting systems.
Owner:ZHEJIANG UNIV
A falling film evaporation heat exchange device with flow phase change energy storage
ActiveCN104501469BImprove heat transfer efficiencyGuaranteed uniformityMechanical apparatusEvaporators/condensersEnergy couplingEngineering
Owner:HARBIN INST OF TECH
A kind of sludge automatic fueling device and method based on solar greenhouse
ActiveCN109020146BSimple structureLess componentsSludge treatment by de-watering/drying/thickeningBiofuelsSludgeProcess engineering
Owner:HARBIN INST OF TECH
Flat-type air vibration isolator
InactiveCN102635659AEasy to achieve modularityLower the altitudeGas based dampersAir springEngineering
The invention discloses a flat-type air vibration isolator, wherein the vibration isolator comprises three or four main chambers and three or four additional air chambers; the three main chambers are arranged in a triangular mode; four main chambers are arranged in a quadrilateral mode; and the additional air chambers are arranged in parallel in a space formed by the main chambers. Compared with the traditional dual-chamber air vibration isolator, the vibration isolator provided by the invention has the advantages that a lower chamber of the traditional air spring is replaced by additional air chambers with damping holes, the defect that the volume and damping holes of the lower chamber of the traditional air vibration isolator are unchanged is eliminated, and meanwhile a structure with an upper chamber and the lower chamber in separation is adopted, the center of gravity of the air vibration isolator is lowered, thus the air vibration isolator is more stable, and the air vibration isolator is mainly applied to the vibration isolation of devices, such as an ultra-precise test bed, an ultra-precise machine tool, an optical table.
Owner:TSINGHUA UNIV
A telescopic sitting and lying chair
ActiveCN110250779Bincrease contact surfaceSeat position loweredBenchesConvertible chairsMechanical engineeringReclining chair
The telescopic chair for sitting and lying is provided in the present invention. The left and right upper frame cross pieces, the left and right lower frame cross pieces, the left and right front main support pieces and the left and right rear main support pieces of the chair frame respectively form two parallelogram mechanisms on the left and right sides. The left and right sides of the seat part respectively form left and right guide rail motion pairs with the left and right upper frame cross pieces. The locking assembly is arranged on a pair of parts with relative motion, and the armrest assembly is arranged between the chair back part and the chair frame part. When the locking assembly is locked, the chair is in the sitting position. When it is released, the parallelogram mechanism rotates backward, the chair back, the seat, the armrest and the telescopic member are linked, the chair back and the seat are lengthened, and the seat part is translated downward to the lying position, so that the conversion between sitting and lying can be realized at one time. The present invention makes full use of the motion characteristics of the parallelogram mechanism, has telescopic characteristics, has the advantages of simple structure, simple use, small floor occupation, small space, low cost, etc., and is expected to solve the two major problems of mass consumption and limitations in use that are difficult to achieve in current sitting and lying chairs.
Owner:DONGGUAN ULE COOKER OUTDOOR LEISURE SUPPLIES CO LTD
Modularized multiple constant current output converter
ActiveCN101902139BImprove conversion efficiencyImprove window utilizationAc-dc conversionDc-dc conversionLevel structureEngineering
The invention relates to a multi-output electric energy transducer, aiming at providing a modularized multiple constant current output converter. The converter comprises N-numbered submodulars, wherein each submodular composes a transformer T2N, Nth rectifier and an output direct-current filter capacitor CON; primary windings of the transformer in each submodular are in series in sequence; the converter has two level structures, wherein the first level structure comprises a first transformer T1 and controllable high frequency alternating current sources Vac which are in parallel connection with two ends of the primary windings of the first transformer T1, and the second level structure comprises the N-numbered submodulars; and two ends of secondary windings of the T1 are respectively connected to the head and the tail of the primary windings of the transformers of the submodulars which are in series in sequence. In the invention, excitation inductance of the transformer at first level is not influenced by load short-circuit or open circuit; main circuit parameters has simple design, without considering influences on the main circuit parameters under the abnormal state; and the submodular circuits can be standardized and can realize flexible combination to obtain any required circuit output, thereby reducing production cost.
Owner:SHANGHAI ELECTRIC POWER ELECTRONICS
Magnetic levitation cylindrical linear motion guide rail pair
InactiveCN102626867BEasy to processNo wearLarge fixed membersMagnetic holding devicesNumerical controlLinear motion
The invention discloses a magnetic suspension cylindrical linear movement guide rail pair. The magnetic suspension cylindrical linear movement guide rail pair comprises supporting racks which are installed at the two ends of a pedestal, cylindrical supporting guide rails which are installed on the supporting racks, and magnetic suspension movable guide rails and magnetism isolating plates which are sleeved on the cylindrical supporting guide rails, and an organ-type shield, wherein the magnetism isolating plates are installed on the two sides of the magnetic suspension movable guide rails; displacement sensors are installed in the circumferential directions of the magnetism isolating plates; and a counter bore is formed on the pedestal and is used for installing the guide rail pair on a lathe body. The magnetic suspension cylindrical linear movement guide rail pair is reasonable in structure, integrates the advantages that the cylindrical guide rails are easy to process and magnetic suspension supports are free of contact and abrasion, high in speed, high in precision and are not required to be lubricated and sealed, can structurally decouple magnetic fields between a power source and the magnetic suspension guide rail pair and each magnetic support in the magnetic suspension guide rails easily, can serialize and modularize functional components of a lathe easily, and can meet a requirement for the performance of a linear feeding system of a high-speed and high-precision numerically-controlled lathe.
Owner:NANTONG UNIVERSITY
System and method for actively correcting offset drift and wire bonder
InactiveCN102760678BCorrect distance parameterGuaranteed welding accuracySemiconductor/solid-state device testing/measurementSolid-state devicesTarget surfaceBack reflector
The invention provides a system and a method for actively correcting an offset drift and a wire bonder. Collimating mirrors, a spectroscope, a coaxial-light emitter and a back reflector are arranged reasonably; a difference value of different positions, on a target surface of an imaging system detector, of a metal ball formed by a capillary tip at different time points during work is determined as offset drift amount of the distance between the capillary and the imaging system; and a parameter about the distance between the capillary and the imaging system is corrected according to the offset drift amount. The offset drift amount of the distance between the capillary and the imaging system can be accurately measured and corrected in real time, so that welding accuracy of the wire bonder is guaranteed, and rate of finished chip is increased. Besides, the system for actively correcting the offset drift and the wire bonder are simple in structures, low in cost and convenient to modularize.
Owner:CETC BEIJING ELECTRONICS EQUIP