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47results about How to "Meet the needs of actual working conditions" patented technology
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Non-invasive load identification method and non-invasive load identification device
ActiveCN111244954AMeet the needs of actual working conditionsSolve technical problems with low recognition accuracyAc network circuit arrangementsTransient stateLoad time
The invention discloses a non-invasive load identification method and device. The method comprises the steps of finding out a transient stage of a time sequence according to an obtained time sequenceat a power supply inlet, wherein the time sequence comprises an active power time sequence, a reactive power time sequence and a current time sequence; extracting load identification characteristic quantities at the transient stage according to the electric energy data at the power supply inlet, wherein the electric energy data include voltage, current and power, and the load identification characteristic quantities include steady-state power increment, active power characteristics, harmonic current increment and load time characteristics; and determining a load type according to the load identification characteristic quantities and a preset load library, wherein the preset load library has a corresponding relationship between the load identification characteristic quantities and the loadtype. According to the invention, the technical problems of limited steady-state characteristics and relatively low identification accuracy under the condition of complex actual working conditions ofexisting non-intrusive load identification are solved.
Owner:GUANGDONG ELECTRIC POWER SCI RES INST ENERGY TECH CO LTD
Intelligent-type pre-lubricating system of engine
ActiveCN102748088AAvoid dry wearReduce power consumptionMachines/enginesPressure lubrication with lubrication pumpAutomotive engineeringOil pressure
The invention discloses an intelligent-type pre-lubricating system of an engine. The intelligent-type pre-lubricating system comprises an oil bottom shell and an engine lubricating system, wherein the intelligent-type pre-lubricating system is characterized by also comprising a pre-lubricating oil pump, a controller, a controller power supply module and a pressure sensor used for detecting oil pressure of an engine lubricating system; the inlet of the pre-lubricating oil pump is communicated with the oil bottom pump; the outlet of the pre-lubricating oil pump is communicated with an lubricating oil path of the engine lubricating system; the signal output end of the pressure sensor is electrically connected with the signal input end of the controller; and the controller starts the pre-lubricating oil pump while obtaining the power of the controller power supply module and controls the pre-lubricating oil pump to stop working according to a detecting result of the pressure sensor. According to the invention, the intelligent-type pre-lubricating system realizes to fill engine oil in a lubricating oil channel of the engine and avoids dry-type abrasion in an engine starting procedure; in addition, power consumption is also reduced on a condition of satisfying actual working condition demands of the engine.
Owner:ZHEJIANG KEBODA IND +1
Wheel noise reduction method and multi-layer type wheel noise reduction block
ActiveCN107584966AMeet the structureMeet the material propertiesRail-engaging wheelsSustainable transportationVibration attenuationAgricultural engineering
The invention discloses a wheel noise reduction method and a multi-layer type wheel noise reduction block. According to the wheel noise reduction method, the multi-layer type wheel noise reduction block is arranged on a wheel for vibration attenuation and noise reduction, a mounting board is arranged in the multi-layer type wheel noise reduction block, a first hole and a second hole are formed inthe two ends of the mounting board correspondingly, and two end portion bolts penetrate through the first hole and the second hole to be screwed onto the wheel; a first outer restraint layer is arranged on the side, close to an axle, of the multi-layer type wheel noise reduction block; a suspension type inner restraint layer is arranged between the mounting board and the first outer restraint layer; a hollow spindle penetrates through the suspension type inner restraint layer, one end of the spindle makes contact with the mounting board, and the other end of the spindle makes contact with thefirst outer restraint layer; the suspension type inner restraint layer is vulcanized and stuck between the mounting board and the first outer restraint layer through a first damping layer; and a middle bolt penetrates through the first outer restraint layer, the spindle and the mounting board and then is screwed into the inner side portion of the circumferential direction of the wheel, and accordingly the middle of the multi-layer type wheel noise reduction block is connected to the wheel.
Owner:ZHUZHOU TIMES NEW MATERIALS TECH
A control method of multi-mode fuel cell system
ActiveCN110957505AGuaranteed not to be short of breathImprove responsivenessReactant parameters controlThermodynamicsFuel cells
The invention relates to a control method of a multi-mode fuel cell system. According to the control method, the fuel cell system has an economic mode, a normal mode and a motion mode by changing theair stoichiometric ratio, the hydrogen circulation ratio and the gas supply pressure of a fuel cell stack. According to the control method, the performance of the fuel cell system is essentially improved on the basis of the dynamic property and economy requirements of the whole vehicle, so that the dynamic response capability and recovery capability of the fuel cell system are enhanced. In the economic mode, the fuel cell system has the highest comprehensive efficiency, the lowest accessory energy consumption and the limited dynamic response capability; in a normal mode, the comprehensive efficiency of the fuel cell system is slightly reduced, and the power response capability is enhanced; in the motion mode, the comprehensive efficiency of the fuel cell system is obviously reduced, the energy consumption of accessories is high, the dynamic response capability is the strongest, and the actual driving experience of a driver can be completely met.
Owner:CHINA FIRST AUTOMOBILE
Control method for counter-rotating movable blade adjustable axial flow fan
ActiveCN107313968AAchieve energy efficiencyExtended range of efficient operationPump componentsPump controlState parameterIndustrial engineering
Owner:ZHEJIANG SHUANGYANG FAN
Step-like belt conveyor
The invention discloses a step-like belt conveyor. The step-like belt conveyor comprises a support, conveying rollers and a belt; the conveying rollers are arranged on the support; the belt is laid on the conveying rollers; the support comprises a flat plate and supporting feet; the flat plate comprises a horizontal segment and an inclined segment; a gap is formed between the horizontal segment and the inclined segment; the two ends of the gap are connected through connection shaft bases; the horizontal centers of the connection shaft bases and the horizontal center of the flat plate are kept at the same height; bearings are arranged in the connection shaft bases in a sleeved manner; a connection shaft is arranged at the two ends of each conveying roller; the connection shafts are arranged in the bearings in a sleeved manner; a pressing roller base and a pressing roller are arranged at the head end of the inclined segment; and the pressing roller is connected to the pressing roller base in a rotating manner. Due to the adoption of the above device, the requirement of conveying of an inclined channel is met, the structure is simple, design is reasonable, and the work efficiency is improved.
Owner:安徽德勤机械股份有限公司
Pneumatic-electric hybrid force control end effector for robot
ActiveCN111745536ALarge force to weight ratioImprove flexibilityGrinding carriagesGrinding feed controlControl engineeringElectric machinery
The invention discloses a pneumatic-electric hybrid force control end effector for a robot. The pneumatic-electric hybrid force control end effector comprises a fixed platform connected to an end joint of a mechanical arm, and a mobile platform that can move relative to the fixed platform through a guide device; an air telescopic spring and a linear motor arranged in parallel are arranged betweenthe mobile platform and the fixed platform and used for driving the mobile platform to move axially along the guide device; the guide device is provided with a displacement sensor used for detecting the moving position of the mobile platform; the mobile platform is provided with a pressure sensor and a tile angle sensor; the displacement sensor, the pressure sensor and the tile angle sensor send feedback signals to a controller; and the controller adjusts the output force of the air telescopic spring and the linear motor to realize the decoupling of the force / position control of the mechanicalarm. The pneumatic-electric hybrid force control end effector for the robot provided by the invention adopts the pneumatic-electric hybrid drive, has the advantages of being high in precision, fast in response, good in flexibility, large in force control adjustment range, light in weight, low in cost and the like, can realize surface finishing of a continuous curved surfaces, and is especially suitable for the polishing and grinding industry.
Owner:NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
DPF regenerated heat protection method
ActiveCN112160818AMeet the needs of actual working conditionsInternal combustion piston enginesExhaust apparatusSwitching signalProcess engineering
The invention relates to a DPF regenerated heat protection method. The DPF regenerated heat method comprises the steps that an air inlet flow signal, a pressure difference signal, a DPF inlet temperature signal, an SCR inlet temperature signal, a neutral position switch signal, a hand brake signal, an accelerator signal and a brake signal are collected; whether a DPF is in a regeneration state ornot is detected, and if the DPF is in a regeneration state, whether regenerated heat protection judgment is passed or not is detected; if regenerated heat protection judgment is passed, DPF regeneration is stopped, and then a regenerated heat protection mode is started; and whether regenerated heat protection exit judgment is passed or not is detected, and if regenerated heat protection exit judgment is passed, the regenerated heat protection mode is stopped. Corresponding judgment conditions are provided for the entry and exit of regenerated heat protection under different working conditions,and the actual working condition requirements are better met; the regenerated heat protection modes are classified, automatic switching conditions between different types of modes are designed, and the change conditions of the working conditions can be flexibly handled.
Owner:DONGFENG COMML VEHICLE CO LTD
Self-adaptive forklift potential energy recycling system according to load capacity and control method
ActiveCN110374941ASimple control methodHigh specific powerFluid-pressure actuator testingServomotor componentsSupply energyCapacitance
Owner:ZHEJIANG UNIV
Horizontally-opposite diaphragm type electric vacuum pump
InactiveCN105134567AReduce volumeGuaranteed vacuum environmentPositive displacement pump componentsFlexible member pumpsVacuum assistedEngineering
The invention relates to a vacuum pump providing vacuum assisting power for an automobile braking master pump and aims to provide a horizontally-opposite diaphragm type electric vacuum pump which is small in size, large in exhaust amount and convenient to machine. The horizontally-opposite diaphragm type electric vacuum pump comprises a fixed support, a motor and a pump body. Two eccentric cranks which are horizontally arranged in the left and right direction are installed on a motor shaft in the pump body and connected with connecting rods. The other ends of the connecting rods are connected with diaphragm assemblies which are wrapped in diaphragms. The edges of the diaphragms are fixed to the pump body. End covers are installed at the two ends of the pump body. A sealed work cavity is formed between each diaphragm and the corresponding end cover. Two sets of installing holes are machined in the inner side of each end cover, and each upper installing hole and each lower installing hole are provided with an air inflow valve and an air outflow valve respectively. Each air inflow valve and the corresponding air outflow valve are communicated with an air inflow channel and an air outflow channel respectively. Each air inflow channel is connected with an air outflow pipeline. The air outflow channels are communicated with the interior of the pump body. An exhaust port is formed in the upper portion of the pump body.
Owner:SHIJIAZHUANG JIAXIN AUTOMOTIVE BRAKE SYST
Preparation method of seawater corrosion resistant wear-resistant composite coating
ActiveCN109136822AIncreased microhardnessReduce coefficient of frictionMolten spray coatingWear resistantSand blasting
The invention discloses a preparation method of seawater corrosion resistant wear-resistant composite coating. The preparation method includes: subjecting a base sample to sand blasting before washing, preheating the base sample, preparing NiAl-Cr2O3-Mo composite coating on the surface of a base by means of plasma spraying, and spraying a NiAl binding layer between the NiAl-Cr2O3-Mo composite coating and the base; the NiAl binding and the NiAl-Cr2O3-Mo composite coating can bind well, so that binding strength of the composite coating herein can be effectively improved. After Cr2O3 and Mo are added, microhardness of the composite coating herein can be increased from 195.1 HV to 362.3 HV, friction coefficient in seawater is decreased from 0.29 to 0.26, and wear rate is decreased from 3.2*10<-5> mm<3> / N. m to 2.7*10<-5> mm<3> / N. m. The composite coating herein has excellent comprehensive performance.
Owner:XI AN JIAOTONG UNIV +1
Reciprocating speed adaptive pulse injection device
InactiveCN104001385ASimple structureImprove reliabilityDispersed particle filtrationElectromagnetic pulseHigh pressure
The present invention relates to a reciprocating speed adaptive pulse injection device, and belongs to dust removal devices. A hole plate has a plurality of holes, each hole is connected to a filter bag, both left and right guide rails are steel I-beams and fixed on two sides of the hole plate; the left and right rails each has a corresponding mobile platform, the left and right mobile platforms are connected by a horizontal injection tube; an outlet end of the horizontal injection tube is perpendicular to the mouth of the filter bag; an inlet end of the horizontal injection tube is connected to the outlet end of an electromagnetic pulse valve; the inlet end of the electromagnetic pulse valve is connected to a high pressure gas tank by a high-temperature resistant high-pressure gas pipeline; the high pressure gas tank is connected to the front end of the hole plate; an electric induction front panel is connected to the front end of the hole plate, an electric induction back panel is connected to the back end of the hole plate, an electric induction side panel is connected to the side edge of the hole plate, and all the three induction panels are used to reflect the location information of the horizontal injection tube; and a control device is connected to the left mobile platform. The present pulse injection device has advantages of simple structure and high reliability.
Owner:CHINA UNIV OF MINING & TECH
Polarity reversing test device and test method thereof for high-voltage DC filter capacitor
InactiveCN108152724AReduce loop energy lossControl the magnitude of the polarity reversal currentCircuit interrupters testingTest powerCapacitor voltage
The invention discloses a polarity reversing test device and a test method thereof for a DC filter capacitor. The test device consists of a test power supply system, a DC reversing test system, a measurement and control system and a grounding protection system. The two ends of a transformer inside the test power supply system are connected through a switching switch and a rectifying silicon stackto provide the positive and negative polarity voltage for a capacitor. The reversing test system is connected with the test power supply, wherein the polarity reversing of different times and voltagesof the capacitor can be realized by utilizing the energy storage of the capacitor and through adjusting the inductance and the resistance. The measurement and control system controls a switch of thedevice to realize the cyclic reversal of positive and negative polarities, and collects data such as the voltage and current data of the capacitor. The grounding protection system is used for discharging residual charges of the loop, and protecting the safety of both the system and human bodies. According to the test device, the characteristic of the self energy storage of the DC filter capacitoris utilized, so that the polarity reversing of the capacitor under the high-voltage and high-current condition can be realized by adopting the large-current rectifying silicon stack. The time of the reversing test can be smaller than 10 ms.
Owner:XIAN HIGH VOLTAGE APP RES INST CO LTD
Preparation method of extrusion roller
The invention belongs to the technical field of composite material preparation, and discloses a preparation method of an extrusion roller. The preparation method comprises the steps of adding ceramicparticles and metal powder with the volume ratio being 3:1-5 into powder mixing equipment to be sufficiently mixed; adding an adhesive into the mixed powder according to the mass ratio being 3%-8%, stirring the mixture to be uniform and adding the mixture into a stud preform forming die, and obtaining a formed stud ceramic preform through heating and curing; fixing the obtained stud ceramic preform into a die-casting die, performing preheating, casting high-temperature molten metal, setting certain pressure and the certain die-casting speed, maintaining pressure, and performing pressure casting to obtain a composite material stud; fixing the obtained composite material stud into a centrifuge die, performing preheating, starting a centrifuge, injecting molten metal into a die cavity, and after cooling, falling sand to obtain the composite material stud extrusion roller. The pressure casting infiltration technology and the centrifugal casting technology are combined to prepare the ceramic reinforced metal matrix composite material stud extrusion roller.
Owner:KUNMING UNIV OF SCI & TECH
Test device and test method of duration of direction and shift changing clutch of gearbox
InactiveCN108613804AFilling the Gap in Reliability TestingImprove shift work efficiencyMachine gearing/transmission testingDrive shaftPersonal computer
Owner:XUZHOU XCMG DRIVELINE TECH CO LTD
Cable placement frame
InactiveCN105655931AEasy to installMeet the needs of actual working conditionsPipe supportsElectrical apparatusEngineeringScrew thread
Owner:王帅
Acousto-optic bird repelling device and application method
PendingCN111011358AGuaranteed safe operationSolve the ills that cannot be rotatedAnimal repellantsControl systemElectric machine
The invention relates to an acousto-optic bird repelling device and an application method. Common acousto-optic bird repellent devices installed on collecting power lines in a wind farm are found obvious deficiencies in applications, including the fact that a glass reflector can not rotate in absence of wind, resulting in failure to effectively repel birds only by an acoustic bird repelling device. The acousto-optic bird repelling device of the present invention is composed of a base (7), a supporting rod (8) fixed above the base, a connecting sleeve (10) sleeved in the middle of the supporting rod, a sound generator device (5) connected to one side of the connecting sleeve through a connecting rod, a mirror bracket body (3) fixed above the supporting rod, a permanent magnet motor (4) connected above the mirror bracket body through bolts, an inner ring of a bearing is mounted on the output shaft of the permanent magnet motor, and a reflector device (1) connected to an outer ring of thebearing. The sound generator device is of a box structure, and internally provided with a sound generator, a control system and a storage battery (11) in sequence. A solar panel is installed on the front end surface of the box structure. The invention is used for the acousto-optic bird repelling device.
Owner:华电吉林大安风力发电有限公司
Movable injection ignition device
PendingCN114060849APortable deviceSmall footprintBurnersCombustion ignitionAutomotive engineeringIgnition control
The invention discloses a mobile injection ignition device, which belongs to the technical field of oil and gas drilling. The device comprises an ignition system, a remote injection device, a mobile device, a track assembly, a control cabinet and a remote control system, the ignition system comprises an ignition head, an ignition cable and an ignition control box; the remote injection device comprises an oil tank, a high-pressure oil pump, an overflow valve, a pressure gauge, an electromagnetic valve and a nozzle; the mobile device comprises a vehicle body provided with a walking wheel assembly and a power mechanism, a storage battery is installed in the vehicle body, and the storage battery is used for supplying power to an electric appliance of the ignition device. The track assembly comprises a track and a supporting piece assembly used for fixing the track. The remote control system comprises a remote controller, a processor, a signal transmitter and a signal receiver; the control cabinet is in control connection with the ignition control box, the electromagnetic valve, the signal receiver and the power mechanism. The problems that in the prior art, the flame jetting distance of an ignition device is short, and the ignition device is prone to being damaged are solved.
Owner:广汉市思明石油钻采设备配套有限公司
Preparation method of high-temperature wear-resistant oxidation-resistant coating
InactiveCN110527942ATissue structure dense and uniformReduce crackingMolten spray coatingPorosityWear resistant
The invention discloses a preparation method of a high-temperature wear-resistant oxidation-resistant coating. The method comprises the following steps: firstly, carrying out sand blasting treatment on a substrate sample, then carrying out spraying treatment on the sample by adopting a plasma spraying method, fixing the sample on a rotary table while a spray gun moves in the spraying process, enabling the sample to rotate quickly, effectively preventing the coating from being locally overheated, and finally, carrying out high-temperature vacuum heat treatment to prepare the MCrAlY coating. Thecoating is subjected to vacuum heat treatment, so the defects of cracks, pores and the like in the coating are effectively reduced, and the bonding strength of the coating is obviously improved; after heat treatment at 1100 DEG C, the porosity of the coating is reduced to 0.86%, the bonding strength is improved to 62.1 Mpa, and the coating has excellent wear resistance and oxidation resistance atthe high temperature of 900 DEG C and is good in comprehensive performance.
Owner:XI AN JIAOTONG UNIV +1
Vertical mounting structure and vertical mounting method of permanent magnetic coupling, online separating and resetting method
PendingCN107370337AReduce installation errorsUniform air gapManufacturing dynamo-electric machinesPermanent-magnet clutches/brakesElectrical and Electronics engineeringMechanical engineering
The invention relates to a vertical mounting structure and a vertical mounting method of a permanent magnetic coupling, and an online separating and resetting method. The vertical mounting structure comprises a permanent magnetic coupling and a supporting sleeve which are coaxially arranged. One end of the supporting sleeve is connected with a vertical motor, and the other end is connected with a load end. The permanent magnetic coupling is arranged in the supporting sleeve. The permanent magnetic coupling comprises a first shaft sleeve, a second shaft sleeve, a driven rotor and an active rotor. The first shaft sleeve sleeves the output shaft of a vertical motor and is connected with the active rotor. The second shaft sleeve sleeves an input shaft at the load end and is connected with the driven rotor, wherein the supporting sleeve comprises a first sleeve and a second sleeve which are separately arranged and are detachably connected. The first sleeve is connected with the vertical motor, and the second sleeve is connected with the load end. The vertical mounting structure and the vertical mounting method have advantages of settling a problem of vertical mounting of the permanent magnetic coupling, realizing easy connection and separation, and realizing online separated maintenance and resetting of a faulted motor in a motor-motor linked system.
Owner:JIANGSU MAGNET VALLEY TECH
A control method for an axial flow fan with counter-rotating movable blades
ActiveCN107313968BAchieve energy efficiencyExtended range of efficient operationPump componentsPump controlState parameterSimulation
Owner:ZHEJIANG SHUANGYANG FAN
Preparation method of high-temperature anti-abrasion antioxidation coating
InactiveCN108914043ATissue structure dense and uniformReduce crackingMolten spray coatingPorositySand blasting
The invention discloses a preparation method of a high-temperature anti-abrasion antioxidation coating. Firstly, a substrate specimen is subjected to sand blasting treatment; then, the specimen is subjected to spray coating treatment by a plasma spray coating method; finally, a MCrAlY coating is prepared through high-temperature vacuum heat treatment. The coating is subjected to vacuum heat treatment, so that the defects such as cracks and pores in the coating are effectively reduced; the bonding intensity of the coating is obviously improved; after 1100 DEG C heat treatment, the porosity of the coating is reduced to 0.86 percent; the bonding intensity is improved to 62.1Mpa; at high temperature of 900 DEG C, excellent abrasion performance and antioxidation performance are realized; the comprehensive performance is good.
Owner:XI AN JIAOTONG UNIV +1
Reciprocating speed adaptive pulse injection device
InactiveCN104001385BMove quicklyMeet the needs of actual working conditionsDispersed particle filtrationElectromagnetic pulseHigh pressure
Owner:CHINA UNIV OF MINING & TECH
dpf regenerative thermal protection method
ActiveCN112160818BMeet the needs of actual working conditionsInternal combustion piston enginesExhaust apparatusSwitching signalEngineering
Owner:DONGFENG COMML VEHICLE CO LTD
Air release valve with detachable valve body and manufacturing method thereof.
PendingCN109296802ATimely replacementAddressing the need for washout testingValve housingsSlagEngineering
The invention relates to an air release valve with a detachable valve body and a manufacturing method thereof. The air release valve with the detachable valve body comprises the valve body; end flanges are arranged at inlet and outlet ends of the valve body and used for connecting with a pipeline; the top of the valve body is provided with a middle flange; the valve body is composed of two symmetrical half-valve bodies that are butted and fixed; a sealing gasket is arranged between the two half-valve bodies; the shape of the sealing gasket is matched with the shape of the contact faces of thetwo half-valve bodies; the two half-valve bodies are fixed by hoops at the two end flanges and a hoop at the middle flange; positioning plates are welded to the bottoms of the two half-valve bodies; and the two positioning plates are in screw connection. The air release valve with the detachable valve body is convenient to disassemble, so that washing condition is easy to observe, and under the working condition, the washing condition of other valves in actual working is evaluated; parts can be replaced in time; when slag is accumulated in the valve body of the valve, the valve body can be disassembled for cleaning; when a fluid experiment is carried out, the experiment condition of the structure can be observed more visually so that the experiment cost is greatly reduced; the experiment can be repeatedly carried out; and the wall thickness data can be collected during the subsequent flush experiment.
Owner:CHENGDU CHENGFENG VALVE +2
Numerical control tool rest static rigidity testing device and method
PendingCN114593884ADetection stiffnessCheck the maximum carrying capacityTotal factory controlElasticity measurementNumerical controlControl system
The invention discloses a numerical control tool rest static rigidity testing device and method, and belongs to the field of comprehensive performance detection of functional parts of numerical control machine tools. The numerical control knife rest static rigidity testing device comprises a numerical control knife rest testing table, a force loading device, a deformation measuring device, horizontal iron, a control system and a data acquisition system. The numerical control knife rest test bench and the force loading device are fixedly installed on the horizontal iron, the deformation measuring device is installed on the numerical control knife rest test bench, the control system is used for controlling the knife rest to rotate so as to test the knife rest rigidity of different knife positions, and the data acquisition system is used for uploading test data of the force loading device and the deformation measuring device to the industrial personal computer. The testing device is simple and compact in structure, large in loading force range and capable of supporting static rigidity testing and maximum bearing capacity testing of numerical control tool rests of various models, multiple directions and various stations; the testing method defines the position of a force loading action point, the actual working condition requirement of the lathe is better met, and the measuring result is high in repeatability and credibility.
Owner:NANJING UNIV OF SCI & TECH
Test device and test method for live oil pipe hydraulic cylinder with built-in piston rod
PendingCN114876909AReliable structureCompact structureFluid-pressure actuator testingLap jointTest bench
The invention discloses a live oil pipe hydraulic cylinder test device with a built-in piston rod simulation environment and a test method. The test bench comprises a rack, and symmetrically arranged side plates are fixed on the rack. A plurality of groups of opposite pin holes are formed in the side plates; the tail connecting device comprises a connecting seat, and the oil pipe seat is fixedly connected with the connecting seat; a tail positioning sleeve is fixed on the left side of the connecting seat; the front connecting device comprises a main body, and the movable oil pipe penetrates through a center hole of the main body; a guide sleeve is mounted at the left end of the body center hole; a front positioning sleeve is fixed on the peripheral surface of the main body; a core pipe is fixed to the right end of the center hole of the body and connected with a connector. The device is simple and reliable in structure, compact in structure and high in bearing capacity; the fixing mode of the front and rear ends of the live oil pipe meets the actual working condition requirements, the installation distance is convenient to adjust, and the live oil pipe offset under different working conditions can be simulated and tested; the method for testing the lap joint length of the inner hole and the end face of the live oil pipe under the stress condition is reliable in test data and high in practicability.
Owner:XCMG HYDRAULICS CO LTD
A kind of preparation method of extrusion roller
Owner:KUNMING UNIV OF SCI & TECH
A three-color push and turn automatic forming mechanism
ActiveCN112223634BImprove the defect of long production cycleShorten the production cycleMolding machineEngineering
This application relates to the field of injection molds, in particular to a three-color push and turn automatic molding mechanism. The main points of its technical solution are: including plate A, plate B, top core rotating assembly and rotating insert; plate A and plate B are opposite to each other, and there are first molding parts, second molding parts and The third molding part; the rotating insert is located between plate A and plate B, the rotating insert is provided with a fixed glue position insert, the first molding part and the fixed glue position insert are spliced to form the first cavity, and the second The splicing of the molded part and the fixed glue position insert forms the second cavity, and the splicing of the third molded part and the fixed glue position insert forms the third cavity; the rotating insert is connected with the top core rotation assembly, and the top core rotation assembly It is used to drive the rotary insert closer to or farther away from the B plate, and the top core rotary assembly is used to drive the rotary insert to rotate. This application has the effect of improving the defect of long production cycle in the production process of three-color parts.
Owner:HONGRITA DIE SHENZHEN
Wire tapping control system and trolley pole with system
PendingCN106627164AIncrease or decrease in sizeQuick returnPower current collectorsControl systemEngineering
The invention discloses a wire tapping control system and relates to the technical field of trolley bus control. The wire tapping control system comprises a cylinder set, a recentralizing system and a swinging system, wherein the cylinder set is composed of cylinders which are back-to-back connected with each other; an air circuit output of the swinging system is merged into an output air circuit of the recentralizing system; an output terminal of the recentralizing system is communicated with a rod chamber and a rod-less chamber of the cylinders; the recentralizing system and the swinging system are in parallel connection on the output air circuit of an air source; and the recentralizing system is capable of independently controlling the route of the cylinder set or jointly controlling with the swinging system. The invention also relates to a trolley pole with the system. The system can be utilized to realize the swinging of the trolley pole, reduce the requirements for the stopping positions of the vehicle and the wire grid and increase the intelligent effect.
Owner:SUZHOU KAIBO YIKONG DRIVE TECH CO LTD
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