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59results about How to "Change load" patented technology
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Weight loading ring-piece type corrosive wear tester
ActiveCN101975708AChange the supply test parametersChange loadInvestigating abrasion/wear resistanceLiquid metalEngineering
The invention discloses a weight loading ring-piece type corrosive wear tester, consisting of a stand, a weight loading system, a friction force measuring system, a transmission system and a crucible resistance furnace system. The weight loading system is internally provided with a lifting rotary plate; during loading, the weight tray is located in the low order; during unloading, the lifting rotary plate is rotated; the weight tray is risen to a high-order for bearing a weight; one end of a first wire rope in the weight loading system is horizontally led out and then wound on a pinion of a force-increasing roller; one end of a second wire rope is fixed and then wound on a bull wheel of the force-increasing roller; and the weight is suspended on the sagging end. In the invention, a ringlike sample and a block-like sample are used as the friction pair, liquid metal is used as the corrosive medium, the behavior of the solid friction pair for bearing corrosion and wear at the same time in the liquid metal can be simulated, the load, temperature, rotating speed and liquid metal supply test parameters can be changed, the friction force can be measured and high load-applied accuracy and high measuring precision are ensured.
Owner:SOUTH CHINA UNIV OF TECH
Method for supporting catalyst on the metal base
InactiveCN101053847AImprove bindingThe preparation process requires simpleCatalyst carriersCatalyst activation/preparationActive componentAlloy
The invention relates to a preparing method of a metal carrier catalyst coating, wherein, the metal carrier catalyst coating which has an alloy metal high temperature treated as a substrate firstly loads a first layer alumina sol AlOOH, after drying loads a second layer Al2O3 paste, then drying and calcining to obtain a firmly coating; or loads mixed paste comprised by Al2O3 and the other metal oxide required by reaction on the dried AlOOH coat to obtain a catalyst active coat after drying and calcining; or an active coating for especial reaction is obtained by further loading paste which is the other metal oxide required by reaction on the second Al2O3 paste coat, and then drying and calcining. Then the active components are loaded on the obtained catalyst coating, after drying and calcining to prepare the metal carrier catalyst. The coating and the metal carrier of the invention are combined firmly. The invention can prepare the composite coating metal carrier catalyst based on different reaction requirement and the process and device for preparing is simple.
Owner:DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
Preparation method of visible light catalyst with surface plasmon effect and application thereof
InactiveCN102350346AEfficient depositionControllable sizeCatalyst activation/preparationMetal/metal-oxides/metal-hydroxide catalystsActive componentNanoparticle
The invention relates to a preparation method of a visible light catalyst with a surface plasmon effect and application thereof. The active component of the visible light catalyst is a precious metal Au, and the carrier is one of TiO2, CeO2, Nb2O5, SiO2, Ta2O5, Al2O3 and ZrO2, wherein, Au accounts for 0.2-5% in mass content, and the particle size of Au particle is 2-20nm. Preparation of the catalyst consists of two steps: the first step is to prepare a carrier; the second step is to prepare an Au / TiO2 (CeO2, SiO2, Al2O3, Nb2O5, Ta2O5, ZrO2) visible light catalyst with a plasmon effect througha sol precipitation method. Au nanoparticles prepared by the method of the invention have good dispersibility, easily controllable size, high active component utilization rate, as well as the effect of high efficiency photocatalytic degradation of organic pollutants by visible light.
Owner:FUZHOU UNIV
Pd/metal-organic framework compound catalyst as well as preparation method and application thereof
InactiveCN104707658AGood dispersionStrong interactionWater/sewage treatment by irradiationOrganic-compounds/hydrides/coordination-complexes catalystsPhotocatalytic degradationPhoto catalysis
The invention discloses a Pd / metal-organic framework compound catalyst as well as a preparation method and application thereof. The preparation method comprises the following steps: dispersing MIL-100(Fe) in an ethanol-water mixed solution, adding polyvinylpyrrolidone and H2PdCl4 under continuous stirring, and performing reflux with an oil bath for 3 h at 90 DEG C so as to obtain the Pd / MIL-100(Fe) composite material, wherein during the process, Pd(2+) can be reduced by ethanol gradually. According to the invention, a simple and mild method for reducing precious metal by ethanol is adopted, high-dispersity precious metal Pd nano-particles grow on MIL-100(Fe) with a super-large specific area, and in the whole process, inert atmosphere, a strong reducing agent and heat treatment process are not required. The prepared Pd nano-particles are good in dispersity, and high in utilization ratio, and have the property of efficiently degrading medicines, personal care products or dyes in the water environment through photocatalysis at the room temperature.
Owner:FUZHOU UNIVERSITY
Control method and system for primary frequency modulation of thermal power generation unit
ActiveCN106065791AChange loadMeet the requirements of primary frequency modulationMachines/enginesEngine componentsPower gridControl valves
Owner:ELECTRIC POWER RES INST OF STATE GRID ZHEJIANG ELECTRIC POWER COMAPNY +1
Preparation method for synthesizing aniline catalyst by undergoing hydrogenation reaction on nitrobenzene
InactiveCN102553576ALow costLittle environmental hazardOrganic compound preparationCatalyst activation/preparationCitrate sodiumNitrobenzene
The invention discloses a preparation method for synthesizing an aniline catalyst by undergoing a hydrogenation reaction on nitrobenzene. The method comprises the following steps of: reducing a PdCl2 aqueous solution under the protection of sodium citrate by taking a NaBH4 aqueous solution as a reducing agent to obtain Pd nanoparticle sol; and mixing and stirring an ultrasonically-treated carbon nanotube in the aqueous solution with the Pd nanoparticle sol to form a Pd-carbon nanotube catalyst. The aniline catalyst shows very high activity in a reaction for synthesizing aniline through hydrogenation of nitrobenzene, and has long cycle life.
Owner:LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
Load and line regulation using operational transconductance amplifier and operational amplifier in tandem
ActiveUS7091785B2Improve stabilityChange loadDifferential amplifiersDc-amplifiers with dc-coupled stagesAudio power amplifierEngineering
An electronic amplifier circuit comprising an operational amplifier circuit, such as a two-stage operational amplifier circuit, in tandem with a operational transconductance amplifier. The electronic amplifier circuit has high open-loop gain and high gain-bandwidth while maintaining stability over a wide range of operating parameters.
Owner:MICROCHIP TECH INC
Method for conducting a targeted training and a corresponding training device
InactiveUS20050245365A1Change loadEasy to useMovement coordination devicesMuscle exercising devicesHuman bodyDorsal parts
The invention relates to a method for a targeted training of the human body as well as a corresponding training device for realizing said method. The training device is used for the training of the body region (vertebral column) between shoulder girdle and pelvic girdle (back region) by using the limbs, arms and legs, such that the body region of the shoulder girdle is turned (twisted) in the opposite direction as the body region of the pelvic girdle, thereby resulting in a relative turning movement between the respective vertebras of the vertebral column.
Owner:ROLLI ENGELBERT
Axle
ActiveCN106274291AGuaranteed normal useReduce limitationsAxle unitsHigh resiliency wheelsEngineeringPulley
Owner:湖北立晋钢铁集团有限公司
Method and device for continuously and automatically metering irregular cans of canned goods and filling lobster sauces
InactiveCN101580135AReduce labor intensityImprove productivitySolid materialFilling materialsMeasuring cup
The invention provides a method and a device for continuously and automatically metering irregular cans of canned goods and filling lobster sauces. The method comprises the following steps: arranging the irregular cans on an oscillating single-channel conveying belt; sending the irregular cans to the below of a feeder by a multi-channel conveying belt; fixing the irregular cans at corresponding positions thereof by a can-pressing mechanism and a can-blocking cam; filling materials by the feeder assisted by a distributing device; and conveying out the irregular cans filled with the materials by conveying belts. The device comprises a conveying device, a pressing device and a charging device, wherein the conveying device comprises the multi-channel conveying belt, the oscillating single-channel conveying belt arranged on the multi-channel conveying belt, and a separation baffle plate; the pressing device comprises the can-pressing mechanism and the can-blocking cam arranged at two ends of the charging device; and the charging device comprises a hopper, the distributing device and the feeder which are arranged from top to bottom, wherein a distributing device cylinder is arranged above the distributing device, and a plurality of measuring cups provided with bottom valves are distributed on the feeder. The method and the device achieve mechanical charging of the irregular cans, increase the labour productivity, improve the labour condition and lighten the labour intensity for workers.
Owner:GUANGZHOU NANLIAN IND +1
Mining similar simulation experimental frame realizing adjustable stratum dip angle and multi-directional loading
PendingCN109164245AChange loadRealize multi-directional forceEarth material testingEducational modelsStressed stateComputer science
The invention discloses a mining similar simulation experimental frame realizing adjustable stratum dip angle and multi-directional loading. The simulation experimental frame comprises an experimentalmaterial mounting frame, a counterforce frame and a jack, wherein the counterforce frame is mounted on the periphery of the experimental material mounting frame, and the jack is mounted on the counterforce frame to act on the experimental material mounting frame. According to the mining similar simulation experimental frame realizing adjustable stratum dip angle and multi-directional loading, with the technical scheme of the first combination of multi-directional stress and variable dip angles, moving variation of overlying rock strata in different stress states at each angle of coal seams can be simulated, experiments can be completed only by changing parameters for the coal seams under different geological conditions, movement deformation characteristics of the overlying rock strata indifferent stress environments at any angle after coal seam mining can be obtained, and experiments in various complex environments can be conducted according to working conditions, so that the simulation experimental frame is of great significance for guiding actual production.
Owner:ANHUI UNIV OF SCI & TECH
Method for conducting a targeted training and a corresponding training device
InactiveUS7691033B2Change loadEasy to useMovement coordination devicesMuscle exercising devicesHuman bodyDorsal parts
The invention relates to a method for a targeted training of the human body as well as a corresponding training device for realizing said method. The training device is used for the training of the body region (vertebral column) between shoulder girdle and pelvic girdle (back region) by using the limbs, arms and legs, such that the body region of the shoulder girdle is turned (twisted) in the opposite direction as the body region of the pelvic girdle, thereby resulting in a relative turning movement between the respective vertebras of the vertebral column.
Owner:ROLLI ENGELBERT
Electric construction machine
ActiveCN102947512AImprove work efficiencyEasy and quick exchangeElectric propulsion mountingSoil-shifting machines/dredgersVehicle frameBuilding construction
In the disclosed electric construction machine, the replacement of a battery device can be easily and promptly performed, and in response to progress in battery technology, the easy replacement with a different kind of battery device is possible. An upper revolving body (3) is configured from a vehicle main body (100) and a vehicle rear section (200); the battery device (31) is mounted to the vehicle rear section (200); the vehicle rear section (200) is attached using bolts to the vehicle frame (101) of the vehicle main body (100) and is configured in a manner so as to be detachable. A main frame (120) extends jutting in the front / back direction to the bottom side of the vehicle rear section (200). The vehicle rear section (200) has: a rear section frame (201) that is mounted on the main frame (120) and is affixed using bolts; and a rear section cover (205) that covers the rear section frame (201) and has a shape that forms a battery chamber (204) and mimics a counterweight.
Owner:NIHON KENKI CO LTD
Air conditioner capable of automatically regulating condensation load and its control method
InactiveCN1693797AWide temperature rangeChange loadSpace heating and ventilation safety systemsLighting and heating apparatusAuto regulationTemperature control
The invention discloses an air conditioner that can automatically modify condensation load and the control method. Temperature control reference value is set on the controller in the air condition. The sensor in the air conditioner is the temperature sensor that the input end of the controller connects with it. The output end of the controller is connected to the outdoor fan electric machine and indoor fan electric machine of the air condition. The controller would control the air conditioner running in refrigeration mode according to the detecting signal of the sensor and the reference value. When in refrigeration mode, the controller would slow down the speed on the outdoor fan electric machine to achieve the heat exchange ability and avoid the indoor heat exchange frost. Thus, the temperature range that the refrigerating unit could run is expanded.
Owner:HISENSE HOME APPLIANCES GRP CO LTD
Method for operating a drive unit for a hybrid vehicle
ActiveCN104797448AAvoid Joint ShockUncomfortable joint shockGas pressure propulsion mountingToothed gearingsInertial massElectric machine
Method for operating a drive unit for a hybrid vehicle, wherein the drive unit comprises a drive assembly (3) with an internal combustion engine (1) and an electrical machine (2) and a transmission (5) having a plurality of gearboxes (6, 7) connected between the drive assembly (3) and an output (4). The electrical machine (2) is coupled via a planetary gear unit (10) to an input shaft (8) of a first gearbox (6) and an input shaft (9) of a second gearbox (7) connected in parallel with said first gearbox (6). Therein the internal combustion engine (1) can be coupled by means of a friction-fitting decoupler (11) to the input shaft (8) of the first gearbox (6) and when the decoupler (11) is closed is coupled together with the input shaft (8) of the first gearbox (6) to the same element (15) of the planetary gear unit (10) A friction-fitting or form-fitting bypass shifting element (12) interacts with the planetary gearbox (10) in such a manner that, when the bypass shifting element (12) is engaged, a rotationally fixed connection exists between the electrical machine (2), the input shaft (8) of the first gearbox (6) and the input shaft (9) of the second gearbox (7) and thereby there is necessarily equality of rotational speed between the same, whereas when the bypass shifting element (12) is disengaged said rotationally fixed connection and said necessarily equal rotational speed for not exist. On execution of a shift under load, shortly before the engagement of an interlocking shifting element to be closed for the shift under load, the friction decoupler (11) is shifted to slipping mode in order to decouple the inertial mass of the internal combustion engine (1).
Owner:ZF FRIEDRICHSHAFEN AG
Power ramp rate limiter for wind turbines
InactiveUS20170328342A1Easy to controlLarge change rateWind motor controlSingle network parallel feeding arrangementsStructural loadEngineering
The invention relates to a method for limiting structural loads in a wind turbine in situations where the power produced by the wind turbine is increased or decreased. The limitation of structural loads is achieved by restricting the power ramp rate, i.e. the rate of change of increases or decreases in produced power. The restriction is only invoked if a maximum change of the produced power or the corresponding internal power reference within a time window exceeds a given threshold.
Owner:VESTAS WIND SYST AS
Blade with small wing rib blade tip and turbine utilizing blade
InactiveCN106368741AReduce leakage flowImprove efficiencyBlade accessoriesMachines/enginesImpellerTurbine blade
The invention relates to the technical field of manufacturing of turbine blades, particularly to a blade with a small wing rib blade tip and a turbine utilizing the blade. The blade is characterized in that the blade tip of the blade is provided with a pressure side small wing and / or a suction force side small wing, wherein the pressure side small wing is positioned on the pressure side surface of the blade; and the suction force side small wing is positioned on the suction force side surface of the blade. The turbine comprises a hub and the blade with the small wing rib blade tip, wherein the blade with the small wing rib blade tip is fixed to the hub. The blade has the characteristics that leakage flow of the blade tip is reduced, loss, caused by a leakage vortex and an upper channel vortex, in a blade grid is reduced, and finally, the efficiency of an impeller mechanism is improved.
Owner:HARBIN INST OF TECH
Trackless highway train structure and two-way driving method thereof
ActiveCN108248705AGood driving flexibilityLow costSteering for vehicles in tandemVehiclesLocking mechanismAutomotive engineering
The invention discloses a trackless highway train structure. The trackless highway train structure comprises two end train pairs and several middle train pairs, wherein the end train pairs are symmetrically arranged at the two ends of a train, each end train pair is constituted by a head train carriage and a middle train carriage, each head train carriage is connected with the corresponding middletrain carriage through an upper capstan and a lower capstan, and a forward locking structure is arranged at the junction of each head train carriage and the corresponding middle train carriage, eachmiddle train pair is composed of two middle train carriages, every two middle train carriages are connected through upper capstans and lower capstans, and the middle train pairs are located between the end train pairs; the head train carriages and the middle train carriages are all of a single axle structure, the axle of each head train carriage is a steering axle and is provided with a forward locking mechanism, and the axle of each middle train axle is a driving axle or a supporting axle; the end train pairs and the middle train pairs and every adjacent middle train pairs are connected through single capstans. By means of the trackless highway train structure, the defects that an existing highway train structure has a complicated steering process, and the driving difficulty is large areovercome.
Owner:XIAMEN KING LONG UNITED AUTOMOTIVE IND CO LTD
Solid material thermal diffusion coefficient measuring device and measuring method thereof
InactiveCN105301044AIncrease contactChange loadMaterial heat developmentMeasurement deviceThermal diffusion coefficient
The invention provides a solid material thermal diffusion coefficient measuring device and a measuring method thereof, and relates to the technical field of measurement of thermal physical property of solid materials. The solid material thermal diffusion coefficient measuring device comprises a heating device, a loading device, an infrared detector, a computer control and collecting system, a stepped motor control system and a pressure display device, wherein the loading device is arranged just above the heating device, and is provided with a support plate, a force applying plate, connecting pieces, testing holes and pressure sensors; the loading device is provided with at least three connecting pieces which are symmetrically distributed, the upper end of each connecting piece is fixedly connected with the force applying plate, and the lower end of each connecting piece is fixedly connected with the support plate; each pressure sensor is arranged at the bottom part of the corresponding connecting piece, and the testing holes are respectively formed in the centers of the force applying plate and the support plate; the infrared detector is arranged just above the loading device; the signal input end of the computer control and collecting system is connected with the signal output end of the infrared detector; the signal input end of the pressure display device is electrically connected with the signal output end of each pressure sensor.
Owner:XIAMEN UNIV
Supported mesoporous Ni catalyst for ethyl acetate hydrodeoxygenation and preparation method of catalyst
InactiveCN105597762AChange loadAchieve conversionHydrocarbon from oxygen organic compoundsMetal/metal-oxides/metal-hydroxide catalystsAcetic acidActive component
The invention discloses a supported mesoporous Ni catalyst for ethyl acetate hydrodeoxygenation. Metal Ni serves as the catalyst active component, and SiO2 or white carbon black serves as a carrier. The carrier adopts SiO2 with a mesoporous structure preferably, the SiO2 with a mesoporous structure adopts mesoporous KIT-6 preferably, and the capacity of the meal Ni in the catalyst is 15-30%. The invention further discloses a method for preparing the catalyst. By means of an impregnation method, the capacity of the Ni is changed, the high-performance catalyst for preparing ethane through ethyl acetate hydrodeoxygenation is prepared, complete conversion of ethyl acetate is achieved at lower temperature, and meanwhile the selectivity reaches 95% or above.
Owner:CHONGQING TECH & BUSINESS UNIV
Telescopically adjustable cargo tray
PendingCN111483675AImprove stabilityLoad-bearing will notRigid containersEngineeringMechanical engineering
Owner:NANNING UNIV
Weight loading ring-piece type corrosive wear tester
ActiveCN101975708BChange the supply test parametersChange loadInvestigating abrasion/wear resistanceEngineeringLiquid metal
The invention discloses a weight loading ring-piece type corrosive wear tester, consisting of a stand, a weight loading system, a friction force measuring system, a transmission system and a crucible resistance furnace system. The weight loading system is internally provided with a lifting rotary plate; during loading, the weight tray is located in the low order; during unloading, the lifting rotary plate is rotated; the weight tray is risen to a high-order for bearing a weight; one end of a first wire rope in the weight loading system is horizontally led out and then wound on a pinion of a force-increasing roller; one end of a second wire rope is fixed and then wound on a bull wheel of the force-increasing roller; and the weight is suspended on the sagging end. In the invention, a ringlike sample and a block-like sample are used as the friction pair, liquid metal is used as the corrosive medium, the behavior of the solid friction pair for bearing corrosion and wear at the same time in the liquid metal can be simulated, the load, temperature, rotating speed and liquid metal supply test parameters can be changed, the friction force can be measured and high load-applied accuracy andhigh measuring precision are ensured.
Owner:SOUTH CHINA UNIV OF TECH
Bolt loading ring-block type corrosive wear testing machine
ActiveCN101975709BChange the supply test parametersChange loadWeather/light/corrosion resistanceInvestigating abrasion/wear resistanceWear testingPositive pressure
The invention discloses a bolt loading ring-block type corrosive wear testing machine. The testing machine comprises a frame, a bolt loading system, a friction measuring system, a transmission system and a crucible electric resistance furnace system, wherein the loading bolt in the bolt loading system is arranged on a hanger bearing connection component, a loading rod is fixedly connected with a positive pressure loading main force hinge base; and a pressure sensor in the friction measuring system is fixed on the frame, and a sample block is arranged on the lower part of the loading rod to press an annular sample. The loading bolt of the testing machine is tightened to apply a load and withstand a force sensor, the positive pressure loading main force hinge base and the loading rod are used to amplify the load. The testing machine uses the annular sample and the sample block as the friction pair and uses liquid metal as the corrosion medium, and can stimulate the corrosion and wear behaviors of the solid friction pair in liquid metal, change the test parameters of load, temperature, rotate speed and the supply of liquid metal and measure the friction; and the load is applied accurately and the measurement accuracy is high.
Owner:SOUTH CHINA UNIV OF TECH
Different-time loading device
InactiveCN108488115AChange frequencyReduce lossesServomotor componentsServomotorsHydraulic cylinderHydraulic pump
The invention relates to a different-time loading device. The different-time loading device is mainly composed of a motor, a hydraulic pump, a three-position five-way electromagnetic hydraulic valve,a pulse modulator, a computer and a multi-cavity hydraulic cylinder. The different-time loading device is a loading device which does not exist at present, the magnitude of loaded loads is changed multiple times within any time in the different-order space direction through the modulating effect of pulse signals and the structure of the multi-cavity hydraulic cylinder, and then multi-order loadingof the loads with the different magnitudes is achieved.
Owner:SUN YAT SEN UNIV
Brake disk that can be fixed to a wheel hub
InactiveCN1856666ASimple structureCheap manufacturingBraking discsPulp and paper industryCommercial vehicle
Owner:KNORR-BREMSE SYST FUER NUTZFAHRZEUGE GMBH
Operational control method of air conditioning equipment, air conditioning equipment and storage medium
ActiveCN111678248AEfficient operating rangeChange loadMechanical apparatusSpace heating and ventilation safety systemsControl engineeringProcess engineering
The invention provides an operational control method of air conditioning equipment, air conditioning equipment and a storage medium. The operational control method of the air conditioning equipment comprises the steps that target air supply temperature of the air conditioning equipment is obtained; a target opening corresponding to a water valve is determined according to the target air supply temperature, and an opening of the water valve is controlled to be adjusted to the target opening; and the operational frequency of a chilled water pump is adjusted according to the target opening. The communication connection between a tail end control cabinet and a machine room main control cabinet is built, the target opening started at present of the water valve is sent to the machine room main control cabinet in real time, so that the main control cabinet correspondingly adjusts the operational frequency of the chilled water pump according to the current target opening of the water valve, sothat the water pump frequency of ''an upstream'' is adaptive to the water valve opening of ''a downstream'', the feedwater quantity adapts to the actual water quantity demand, the water pump iscontrolled more reasonably, and the integral operational energy efficiency of the air conditioning equipment is effectively improved.
Owner:GD MIDEA HEATING & VENTILATING EQUIP CO LTD +1
Noble metal carrier catalyst, preparing method and applications thereof
InactiveCN100591416CWide variety of sourcesEasy to makeOrganic reductionMetal/metal-oxides/metal-hydroxide catalystsRoom temperatureAtmospheric pressure
Owner:INST OF CHEM CHINESE ACAD OF SCI
Preparation method and application of covalent organic framework compound and open-cage fullerene composite material
PendingCN113769712AImprove adsorptionSimple methodProductsGas treatmentComposite materialCovalent organic framework
The invention discloses a preparation method of a covalent organic framework compound and open-cage fullerene composite material. The method comprises the following steps of: performing chemical cage opening on fullerene, mixing the fullerene with a covalent organic framework, and performing ultrasonic treatment, stirring, washing, soaking and drying to obtain the covalent organic framework compound and open-cage fullerene composite material. The invention further provides application of the composite material, wherein the composite material can be used as an electrocatalyst for efficient hydrogen evolution, can solve the problem that the cost is too high due to the fact that a traditional electrocatalyst depends on precious metal, improves the catalytic activity of the electrocatalyst, can also be applied to adsorption of carbon dioxide, and has higher nitrogen doping rate and larger specific surface area and pore volume compared with traditional adsorbents, so that the material has better adsorbability, selectivity and repeatability. The method is suitable for preparing the covalent organic framework compound and open-cage fullerene composite material, and the prepared composite material can be further applied to carbon dioxide adsorption and can also be used as an electrocatalyst for efficient hydrogen evolution.
Owner:HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
Testing bench for wind generating set wheel hub and variable pitch system loading testing
The invention discloses a testing bench for wind generating set wheel hub and variable pitch system loading testing. The testing bench comprises a wheel hub supporting tool, a main loading tool, a torque loading unit and an axial force loading tool; a wheel hub is supported and fixed by the wheel hub supporting tool, and a non-testing variable pitch bearing on the wheel hub is also fixed and constrained by the wheel hub supporting tool; one end of the main loading tool is connected with a flange of a variable pitch bearing needing to be tested on the wheel hub, the other end of the main loading tool extends outwards and is connected with the axial force loading tool through a conversion assembly, and a hydraulic cylinder is connected to the other end of the main loading tool; and the mainloading tool is provided with an installing position used for allowing a gravity load module to be fixedly installed in a reserved mode, and the torque loading unit is installed on the main loading tool and used for exerting torque loads to the main loading tool. According to the testing bench for wind generating set wheel hub and variable pitch system loading testing, static and dynamic loading on the torque, the bending moment, the radial shearing force and the axial force of a wheel hub and variable pitch system can be achieved, and the construction cost of the wheel hub and variable pitchsystem testing bench is reduced while the loading performance requirement is met.
Owner:GUANGDONG MINGYANG WIND POWER IND GRP CO LTD
Machine for producing a sheet of one-sided smooth sheet of paper
InactiveCN101570943AImprove productivityHigh special extrusion pressureDryer sectionCalendersEngineeringPaper sheet
The invention relates to a machine for producing a sheet of one-sided smooth sheet of paper, which includes a forming area, a pressing area, and a drying area. The back side of the sheet opposite to the front side to be smoothed is not only in a pressing nip assigned to the pressing area, but also in a pressing nip assigned to the drying area, and in contact with a pressing felt, wherein the first pressing nip assigned to the drying area is formed between a felted pressing element and a polishing and / or Yankee cylinder. A paper web is guided in a web running direction by the second pressing nip assigned to the drying area after the first pressing nip is assigned to the drying area. The second pressing nip is formed between a smooth press surface and the polishing and / or Yankee cylinder, where a rear side of the paper web contacts with the smooth press surface in the pressing nip.
Owner:VOITH PATENT GMBH
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