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Method for regulating and controlling posture of spacecraft by flow velocity and actuating mechanism thereof
InactiveCN102530269AAvoid wear and tearAvoid Static and Dynamic ImbalancesSpacecraft guiding apparatusSpacecraft attitude controlAngular velocity
The invention relates to a method for regulating and controlling a posture of a spacecraft by the flow velocity and an actuating mechanism thereof and belongs to the field of control to the posture of the spacecraft. The method comprises the following steps that: according to a difference value of a current posture and a desired posture, a three-axis control moment vector required by the spacecraft is obtained, and according to a principle of the momentum moment, a relation between the three-axis control moment vector and the variation of a liquid fuel flowing angular velocity is obtained; according to the working principle of ring-shaped pipe liquid angular momentum exchange equipment, a relation between the liquid fuel flowing angular velocity and the change rate of a velocity vector inthe tangential direction of a pipe when liquid fuel flows is obtained; according to corresponding generated required conditions, the power of the pressure pump is controlled to apply work to the liquid, so that the flow velocity of the liquid is changed, and thus, the angular momentum H of a mass center of the spacecraft is changed and the posture of the spacecraft 10 is changed; and the changed posture is measured by a sensor and is compared with the desired posture and the steps are circularly repeated from the beginning of the step 1. The actuating mechanism for regulating and controlling the posture of the spacecraft by the flow velocity, which is used for implementing the method disclosed by the invention, comprises a liquid filled ring-shaped pipe, the pressure pump, an oil storage tank, a valve, a liquid outlet connecting pipe, a liquid return connecting pipe and a control mechanism.
Owner:BEIHANG UNIV
Movable wind-resistant advertising board and control method thereof
InactiveCN110033696AReduce shaking effectImprove the safety of useBoardsSignsEngineeringMechanical engineering
The invention discloses a movable wind-resistant advertising board and a control method thereof. The movable wind-resistant advertising board comprises a support and a frame, a servo motor is embeddedin the inner top end of the support, a rotary disc is in transmission connection with the top of the servo motor, positioning plates are symmetrically welded on the two outer walls of the rotary disc, the bottom of the frame is fixedly clamped with a clamping seat welded on the rotary disc through a connecting piece, an aerovane is fixed to the top of the frame through a bolt, an AVR central control unit is fixed to the bottom of the frame through a bolt, and the front surface of the frame is fixedly screwed with a mounting plate through a positioning bolt. The movable wind-resistant advertising board has the advantages that the aerovane is used for collecting wind force information, and the servo motor is controlled to rotate and drive the frame to rotate within a specific range, which changes the angle between the frame and the wind blowing direction, so that the contact area between the advertising board and the wind direction is reduced, the shaking effect caused by the wind forceon the advertising board is reduced, and the use safety of the advertising board is improved.
Owner:珠海众暖科技有限公司
New energy power generation system
ActiveCN108322137AImprove wind and wave resistanceStable structurePhotovoltaic supportsBatteries circuit arrangementsEnergy technologyNew energy
The invention relates to the new energy technical field, especially relates to a new energy power generation system, and specifically relates to a new energy power generation system that applies in sea and lake places; the new energy power generation system employs a balance mechanism to stabilize the whole structure, adds anti-storm wave performances of a waterborne house, and reduces shaking influences caused by people activities on the whole structure. The wind power generation system is employed so as to provide environmental protection energy saving effects; in addition, the new energy power generation system can synchronously rise with the water level, can automatically elevate via self-control, and adds the flexibility of the waterborne house; the new energy power generation systemis simple in structure, reasonable in design, low in making cost, high in stability, easy to use, good in anti-storm waves and earthquake-proof performance, energy saving and environmental protective,and can freely move in water, thus providing conveniences for promotion and application.
Owner:固柢(重庆)供电有限公司
Method for judging falling state in action
ActiveCN110992649AReduce adverse effectsPromote healthy livingDiagnostic recording/measuringSensorsHuman bodyPhysical medicine and rehabilitation
The invention relates to the technical field of health information, particularly to a method for judging a falling state in an action. The method comprises the following steps: detecting human body action state data through an acceleration sensor; wherein the data comprise x-axis acceleration ax, y-axis acceleration ay, z-axis acceleration az, x-axis angle x1, y-axis angle y1, z-axis angle z1 andtime information, calculating resultant acceleration smv, and sequentially carrying out angle judgment, acceleration judgment and time judgment to judge whether an object is in a falling state or not.The sensor is mounted in the center of the chest; the chest belongs to the central axis of a human body; the influence of left-right and front-back shaking can be reduced to a certain extent; in addition, contact with other parts of the body is little in the advancing process, the adverse effect of the device on walking of the elderly is effectively avoided, and normal behaviors and falling behaviors of the elderly can be judged with high accuracy by sequentially conducting angle judgment, acceleration judgment and time judgment. The method has important significance for promoting healthy life of the elderly.
Owner:合肥九州龙腾科技成果转化有限公司
Rail train, vehicle-mounted controller and speed measurement method and device of rail train
ActiveCN112441079AReduce shaking effectLess susceptible to interferenceRailway signalling and safetyElectric machineIn vehicle
The invention discloses a rail train, a vehicle-mounted controller and a speed measurement method and device of the rail train, which are applied to the field of rail trains and used for improving theprecision and accuracy of train speed measurement. The speed measurement method of the rail train comprises the steps of when a rotary transformer installed at the shaft position of a traction motoris driven by the motor to rotate, outputting an analog voltage signal in real time; converting the analog voltage signal into a real-time digital voltage signal; converting the digital voltage signalinto a real-time angular position and a rotation turn number signal; and calculating the current speed of the train according to the real-time angular position and the rotation turn number signal.
Owner:BYD CO LTD
Waste collecting-slitting-paper cutting machine
PendingCN108247701AImprove work efficiencyReduce shaking effectMetal working apparatusPaper recyclingHydraulic cylinderPulp and paper industry
The invention discloses a waste collecting-slitting-paper cutting machine. The waste collecting-slitting-paper cutting machine comprises a base, a motor, fixing blocks and a connection rod; a fan is fixedly installed on the base; an electric box is fixed to the left side of the fan; a waste collecting box is arranged on the electric box, and the left side of the lower portion of the waste collecting box is provided with a storage table; a finished product winding shaft is installed below the bottom of a finished product storage table; slide blocks are externally provided with slide grooves, and a slitting shaft is connected with the middles of the slide grooves; the lower portion of a slide rod is connected with a push plate through a hydraulic cylinder, and a quality inspection table is arranged below the push plate; and a paper cutting shaft is fixedly installed at the bottom of the connection rod. The waste collecting-slitting-paper cutting machine is provided with a cutting machine, a splitting machine and the quality inspection table, thus, the steps of splitting, cutting and quality inspection in the whole label production process are successively connected, the whole label production work is a continuous process, the efficiency of the whole label production work is greatly improved, and the time wasted in different procedure processes is decreased.
Owner:东莞市山瑞机械设备有限公司
Water level monitoring device and water level monitoring method
PendingCN114353905AHigh measurement accuracyPrevent immersionMachines/enginesLevel indicatorsGyroscopePoint cloud
The invention discloses a water level monitoring device and a water level monitoring method. The water level monitoring device comprises measuring equipment, a gyroscope and processing equipment, the measuring equipment is used for scanning a junction point of a water level and a target object, obtaining a point cloud picture of an initial scanning surface and transmitting the point cloud picture of the initial scanning surface to the processing equipment; the gyroscope is used for detecting current inclination angle information of the measuring equipment and transmitting the current inclination angle information to the processing equipment; and the processing equipment is used for acquiring a point cloud picture of a real scanning surface corresponding to the point cloud picture of the initial scanning surface according to the current inclination angle information, and acquiring the height of the water level liquid level according to the point cloud picture of the real scanning surface. The laser radar is used as measuring equipment, and the measuring precision is high.
Owner:上海止水智慧科技有限公司
Remote sensing technology based photovoltaic-cell spraying unmanned aerial vehicle
InactiveCN108216638AHighly consistentReduce shakingAircraft componentsBatteries circuit arrangementsMarine engineeringRemote control
The invention relates to a remote sensing technology based photovoltaic-cell spraying unmanned aerial vehicle which comprises an unmanned aerial vehicle body, wing arms and wings. A signal receiving module arranged in the unmanned aerial vehicle body is used for receiving remote signals, a pesticide box is fixed under the unmanned aerial vehicle body, spray nozzles and a camera are mounted at thebottom of the pesticide box, each spray nozzle is provided with an electromagnetic valve used for receiving the remote signals, vertical pesticide tubes are evenly distributed in the pesticide box, bottoms of the pesticide tubes are mutually connected to form a liquid pesticide collecting chamber, spraying mouths are arranged in the bottom of the liquid pesticide collecting chamber and are connected with the spray nozzles, a pressure pump used for receiving the remote signals is arranged in the pesticide box, and the unmanned aerial vehicle is further provided with a photovoltaic cell assembly. By the arrangement, shaking of the unmanned aerial vehicle due to inertia of liquid pesticide during the flight of the unmanned aerial vehicle can be guaranteed, so that balanced remote control is realized, and flight endurance can be improved through the photovoltaic cells.
Owner:成都梵辰科技有限公司
Sterile circulating ventilation device for intensive care unit and circulating ventilation method
InactiveCN112797539APass unhinderedPlay a buffer roleMechanical apparatusSpace heating and ventilation safety systemsIntensive care unitElectric machinery
The invention discloses a sterile circulating ventilation device for an intensive care unit and a circulating ventilation method. The sterile circulating ventilation device comprises a connecting base and a disinfection filtering net plate, wherein a driving motor is arranged at the top of the connecting base; embedded sliding blocks are arranged on the surface of a first reciprocating lead screw and the surface of a second reciprocating lead screw; a supporting bottom plate is arranged at the tops of the embedded sliding blocks; a suction windbox and a mounting chamber are arranged at the top of the supporting bottom plate; an air supply pipe is arranged in the mounting chamber; a branch pipe is arranged on the side surface of the air supply pipe; a T-shaped alarm valve cock is arranged at the top of the branch pipe; one end of the air supply pipe is connected to a preparation branch pipe; and a push-pull cylinder is arranged on the top surface of the side, away from the driving motor, of the connecting base. By arranging the alarm valve cock, when an exhaust air duct of the device is blocked, warning light and warning buzzing can be given out in time, medical workers are reminded of coming to maintain the device, and it is guaranteed that ventilation cycle work of the device is normally conducted.
Owner:THE FIRST AFFILIATED HOSPITAL OF ZHENGZHOU UNIV
Liquid-stabilizing apparatus for liquid cargo tank
ActiveUS20190031435A1Reduce shaking effectReduce storage spaceVessel geometry/arrangement/sizeContainer filling methodsEngineeringSurface structure
A liquid-stabilizing apparatus for a liquid cargo tank includes a guide structure. The guide structure is provided with a positioning floating body. The positioning floating body is provided with anti-sloshing members. The anti-sloshing members are provided with discontinuous baffles at a fixed angle. By using the liquid-stabilizing apparatus, the liquid cargo tank is no longer required to have a bevel surface structure, thereby increasing load capacity of the liquid cargo tank and preventing the liquid cargo tank in various loading states from being impacted by liquid cargos.
Owner:WISON NANTONG HEAVY IND
Energy-saving type liftable floating equipment
InactiveCN108482596AIt has the function of environmental protection and energy savingIncrease flexibilityWaterborne vesselsFloating buildingsMarine engineeringShock resistance
The invention relates to the technical field of water energy-saving facilities, in particular to energy-saving type liftable floating equipment and specifically to energy-saving type liftable floatingequipment capable of being used for places such oceans and lakes. The energy-saving type liftable floating equipment comprises a floating platform, a guiding device and a stabilizing device; and by using the stabilizing device, the integral structure of the energy-saving type liftable floating equipment is more stable, the anti-wave performance of a water house is improved, and the shaking influence on the integral structure during the moving of personnel is also reduced. By using a photovoltaic power generation system, an environment-friendly and energy-saving effect is realized. And moreover, the energy-saving type liftable floating equipment can synchronously rise with the water level and can also control itself to automatically lift so that the flexibility of the water house is improved. The energy-saving type liftable floating equipment has the advantages that the structure is simple, the design is reasonable, the making cost is low, the stability is high, the use is convenient,the anti-wave performance is good, the shock resistance is good, the energy-saving type liftable floating equipment can freely move in the water, the energy-saving type liftable floating equipment isenergy-saving and environment-friendly, and the energy-saving type liftable floating equipment is beneficial for popularization and application.
Owner:WUHAN UNIV OF TECH
Raw material conveying device with leakage-proof function for mask processing
The invention discloses a raw material conveying device with a leakage-proof function for mask processing, and relates to the technical field of raw material conveying for mask processing. The deviceparticularly comprises a bearing main body, a liquid injection mechanism, a liquid pressing mechanism, a liquid receiving mechanism and an anti-foaming mechanism. The liquid injection mechanism is installed at the end inside the bearing main body, the liquid pressing mechanism is arranged below the liquid injection mechanism, the liquid receiving mechanism is installed below the liquid pressing mechanism, and the anti-foaming mechanism is arranged below the liquid receiving mechanism. The raw material conveying device with the leakage-proof function for mask processing can store mask base liquid stock solution in an absorption mode, so that the leakage problem can be effectively avoided, meanwhile, temporary stock solution storage performed in this way is improved into a storage form without liquid or little liquid from a traditional liquid storage form, the movable capability of the stock solution in the conveying device is greatly limited, the stock solution is prevented from being collided in a bearing vessel to cause much foam, and the quality of the stock solution can be guaranteed to the maximum extent.
Owner:东莞市史雷帝三维数控科技有限公司
Cutting equipment
ActiveCN110576218AReduce shaking effectUnbreakableFeeding apparatusTube shearing machinesEngineeringMechanical engineering
The invention discloses cutting equipment. The cutting equipment comprises a cutting disc, a driving part for driving the cutting disc to rotate, a cutting table, a clamping device arranged on the cutting table, a dust-proof device for playing a dust-proof effect after cutting and a pressure bar device used for pressing the driving part and the cutting disc; the clamping device is provided with afirst clamping assembly and a second clamping assembly, and a clamping part is arranged on the first clamping assembly; the pressure bar device is provided with a casing, a handle bar fixed on the casing, a supporting rod, a pull rod, a draw bar and a torsional spring, one end of the supporting rod is fixed on the casing, the other end of the supporting rod is rotationally arranged on a table board, one end of the pull rod is movably arranged on the casing, the other end of the pull rod is rotationally arranged on the table board, the draw bar is rotationally arranged on the table board, one end of the torsional spring is arranged on the draw bar, and the other end of the torsional spring is arranged on the table board. According to the cutting equipment, shaking of the cutting disc underinfluence of a motor is reduced, the cutting disc is not easily broken and can clamp different pipes for cutting and is firm in clamping and convenient to operate, besides, the pipes can be cut from different angles, and the cutting dimension accuracy is high.
Owner:PUJIANG HENGQUAN HARDWARE PROD CO LTD
Crane, crane tower arm control method and device
ActiveCN111285258AStable center of gravityPrevent tippingWinding mechanismsLoad-engaging elementsTowerControl theory
The invention provides a crane, a crane tower arm control method and a crane tower arm control device and relates to the technical field of engineering machinery. In the crane, a telescopic coil cylinder is provided with a distance sensor used for detecting the telescopic length of the telescopic oil cylinder; meanwhile a tower arm winch is provided with a turn number detection mechanism used fordetecting the number of turns of the winch so that a controller can be used for acquiring the actual length of a main arm and the actual length of a rope unwound by the winch and obtaining the targetlength of the rope unwound by the winch by calculating the actual length of the main arm; the rope winding or rope unwinding speed of the winch is regulated according to a comparison result of the target length of the rope and the actual length of the rope so that the actual included angle between the main arm and the tower arm is kept within a preset included angle range; coordinated regulation is realized by regulating length relationship between the tower arm and the main arm; the control precision is relatively high, thus good posture of a hoisting arm in a lifting process or a descendingprocess is maintained; rollover of the crane is effectively prevented; and better reliability of the crane is realized.
Owner:SANY AUTOMOBILE HOISTING MACHINERY
Carton packaging punching equipment
ActiveCN222156814UReduce shaking effectImprove stabilityBox making operationsPaper-makingPunchingCarton
The utility model provides carton packaging punching equipment, which relates to the technical field of punching equipment and comprises a fixing mechanism. According to the device, under the action of the fixing mechanism, the damper and the spring are installed at the bottom of the containing plate, so that the influence that the device shakes on the containing plate during operation can be reduced, the stability is improved, the controller is connected with the first air cylinder, and the output end of the first air cylinder is connected with the adjusting plate; the adjusting plate is adjusted by 180 degrees on the outer surface wall of the fixer, so that the paperboard is positioned and fixed by a positioning column and a rubber sleeve which are mounted at the bottom of the adjusting plate, the stability of the paperboard during punching can be ensured, and the paperboard punching device is simple to operate, low in cost and high in efficiency; according to the paperboard cutting device, the edges of the paperboards on the two sides can be further cut, so that the regularity of the paperboards can be guaranteed, the risk that burrs on the edges of the paperboards scratch workers can be avoided, and safety and practicability are improved.
Owner:WUHU RONGTAI PAPER PRODUCTS CO LTD
Cutting equipment convenient to operate
ActiveCN111633268AReduce shaking effectUnbreakableTube shearing machinesPositioning apparatusElectric machineStructural engineering
The invention discloses cutting equipment convenient to operate. The cutting equipment comprises a cutting blade, a driving part used for driving the cutting blade to rotate, a cutting table, a clamping device arranged on the cutting table, a dustproof device with a dustproof effect after cutting is carried out and a pressing rod device used for pressing of the driving part and the cutting blade downwards. The clamping device is provided with a first clamping assembly and a second clamping assembly, and a clamping piece is arranged on the first clamping assembly. The pressing rod device is provided with a housing, a handle rod fixedly arranged on the housing, a supporting rod with one end fixed to the housing and the other end rotationally arranged on a table plate, a pull rod with one endmovably connected to the housing and the other end rotationally arranged on the table plate, a dragging rod rotationally arranged on the table plate and a torsional spring with one end arranged on the dragging rod and the other end arranged on the table plate. According to the cutting equipment, the influence of a motor on shaking of the cutting blade is reduced, so that the cutting blade is notprone to fragmentation, different pipes can be clamped for cutting, clamping is firm, operation is convenient, the pipes can be cut at different angles, and the cutting size precision is high.
Owner:CHANGZHOU JUKE PRECISION MFG CO LTD
Drive-assisted vertical slot fishway structure and fish collection method
ActiveCN104404929BImprove adaptabilityImprove fish passing efficiencyBarrages/weirsClimate change adaptationAutomatic controlControl system
Owner:嘉善永升五金厂
Spacecraft Attitude Control Method and Its Actuating Mechanism Based on Variable Inertia Flow Rate Regulating Controller
InactiveCN103345254BAvoid wear and tearAvoid Static and Dynamic ImbalancesAttitude controlMomentumSpacecraft attitude control
The invention discloses a spacecraft attitude control method based on a variable and inertia flow velocity adjustment controller and an actuating mechanism of the spacecraft attitude control method. The actuating mechanism comprises a main ring liquid filling annular pipe, a main ring pressure pump, an oil storage tank, a valve, a main ring liquid outlet connecting pipe, a main ring liquid return connecting pipe, a variable ring liquid filling annular pipe, a variable ring pressure pump, a variable ring liquid outlet connecting pipe, a variable ring liquid return connecting pipe and a control mechanism. A flowing loop is formed by the main ring liquid filling annular pipe, the main ring pressure pump, the oil storage tank, the valve, the main ring liquid outlet connecting pipe and the main ring liquid return connecting pipe. The other flowing loop is formed by the variable ring liquid filling annular pipe, the variable ring pressure pump, the oil storage tank, the valve, the variable ring liquid outlet connecting pipe and the variable ring liquid return connecting pipe. According to the spacecraft attitude control method based on the variable and inertia flow velocity adjustment controller and the actuating mechanism of the spacecraft attitude control method, the problems of rotation speed saturation of angular momentum exchange type actuating mechanisms in the process of wide-angle attitude adjustment in the prior art and much mass and the size requirement burden, caused by generated actuating mechanism redundant configuration of a traditional actuating mechanism in order to solve the problem of rotation speed saturation, of a spacecraft are solved.
Owner:BEIHANG UNIV
Hoisting feeding trolley
ActiveCN222389392Uimprove securityGuaranteed synchronicityLoad-engaging elementsElectric machineryBlock and tackle
The utility model relates to a hoisting charging trolley in the field of charging crane equipment, which comprises a trolley frame and a hanging bracket correspondingly positioned below the trolley frame, the lower parts of four corners of the hanging bracket are connected with four hanging hooks, and the upper parts of the four corners of the hanging bracket are provided with four hanging points; two coaxial duplex winding drums are symmetrically arranged at the two ends of the upper frame face of the trolley frame, a double-shaft motor is arranged between the two duplex winding drums, and two output shafts of the double-shaft motor are in transmission connection with drum shafts of the two duplex winding drums respectively. The two sides of each duplex winding drum are each provided with two fixed pulley blocks coaxial with the duplex winding drum, and the outer rope ends of the two steel wire ropes wound around the duplex winding drums are correspondingly connected with the two lifting points at the corresponding ends of the lifting frame in a lifting mode after bypassing the two corresponding fixed pulley blocks on the two sides; according to the hoisting and charging trolley, four hoisting points are controlled through one charging trolley, and the hoisting stability is improved by arranging the hoisting tool.
Owner:HENAN WEIHUA HEAVY MACHINE
Raw material transportation device for concrete processing
InactiveCN119305612AEasy to removeavoid pollutionHand carts with multiple axesHand cart accessoriesGear wheelClassical mechanics
The raw material conveying device for concrete processing comprises a base, four rolling wheels are movably mounted at the bottom of the base, a transverse plate is slidably mounted in an inner cavity of the base, two third grooves are formed in one side of the transverse plate, and two second limiting plates and a second supporting plate are fixedly mounted at the top of the transverse plate; the storage mechanism is used for storing concrete processing raw materials; the storage mechanism comprises two first supporting plates, and the two first supporting plates are slidably mounted on the inner surfaces of the third grooves correspondingly. An output shaft of a first motor drives belt wheels to rotate, through belt transmission, the two belt wheels drive two gears to rotate correspondingly, the two gears are engaged with the two racks correspondingly so that the two racks can be driven to move up and down correspondingly, and in the process, two limiting columns slide in inner cavities of two limiting rings correspondingly; therefore, the raw material box is in an inclined state, and workers can conveniently unload all concrete raw materials in the raw material box.
Owner:HUNAN XIANGGUI WIND POWER EQUIPMENT CO LTD
Pouring equipment for production of fabricated building materials
ActiveCN119260916Aquality improvementReduce shaking effectFeeding arrangmentsAuxillary shaping apparatusShock wavePull force
The invention discloses pouring equipment for prefabricated building material production, and relates to the technical field of building material production equipment.The pouring equipment comprises a pouring frame body, a material guiding frame, an angle adjusting piece, a transmission adjusting frame, a control system and a vibration shell, and the bottom of the material guiding frame communicates with a material guiding pipe; moving pieces are arranged at the bottom of the pouring frame body, adjusting belts are connected to the bottoms of the moving pieces, vibration shells are installed at the bottoms of the adjusting belts, and vibration plates are fixed to the upper end faces of the vibration shells. A winding box is arranged at the top end of the adjusting belt, a winding motor is fixed to one side of the winding box, a winding shaft is fixed to the output end of the winding motor, and a tension plate is fixed to the bottom of the adjusting belt; a vibration roller is rotationally connected into the vibration shell through a positioning shaft, and a vibration plate is fixed to the vibration shell. A tension sensor is fixed at the joint of the tension plate and the adjusting belt; the technical effects that the shaking influence of vibration waves on the pouring frame body can be reduced, and meanwhile the pouring precision is improved are achieved.
Owner:ZHEJIANG MINXIN CONSTR CO LTD
Lower connecting plate for motorcycle
ActiveCN224256853Ureduce vibration forceReduce shaking effectSteering deviceStructural engineeringMechanical engineering
The utility model belongs to the field of lower connecting plates, and particularly relates to a lower connecting plate for a motorcycle, which comprises a plate body, a plurality of annular and uniformly distributed mounting holes are formed in the plate body, a transmission column is fixedly mounted at the top of the plate body, and a transmission pipe is slidably sleeved on the outer side of the transmission column. A guide column is fixedly connected to the top of the inner wall of the transmission pipe, the guide column is slidably connected with the transmission column, a buffer spring is arranged on the outer side of the guide column, and one end of the buffer spring is fixedly connected with the transmission pipe. Through the effect of the buffer spring, vibration force borne by the transmission pipe can be buffered, the influence of vibration on use of the plate body can be reduced, in the buffering process, relying on matched use of the groove, the clamping ball and the first spring, force unloading buffering can be conducted on bounce of the spring during buffering, the shaking influence of the bounce on the transmission pipe can be effectively reduced, and the service life of the transmission pipe is prolonged. And the structural stability during buffering can be improved.
Owner:ZHEJIANG TONG XING METALLIC FORGINGS
Method for regulating and controlling posture of spacecraft by flow velocity and actuating mechanism thereof
InactiveCN102530269BAvoid wear and tearAvoid Static and Dynamic ImbalancesSpacecraft guiding apparatusMomentumSpacecraft attitude control
The invention relates to a method for regulating and controlling a posture of a spacecraft by the flow velocity and an actuating mechanism thereof and belongs to the field of control to the posture of the spacecraft. The method comprises the following steps that: according to a difference value of a current posture and a desired posture, a three-axis control moment vector required by the spacecraft is obtained, and according to a principle of the momentum moment, a relation between the three-axis control moment vector and the variation of a liquid fuel flowing angular velocity is obtained; according to the working principle of ring-shaped pipe liquid angular momentum exchange equipment, a relation between the liquid fuel flowing angular velocity and the change rate of a velocity vector in the tangential direction of a pipe when liquid fuel flows is obtained; according to corresponding generated required conditions, the power of the pressure pump is controlled to apply work to the liquid, so that the flow velocity of the liquid is changed, and thus, the angular momentum H of a mass center of the spacecraft is changed and the posture of the spacecraft 10 is changed; and the changed posture is measured by a sensor and is compared with the desired posture and the steps are circularly repeated from the beginning of the step 1. The actuating mechanism for regulating and controlling the posture of the spacecraft by the flow velocity, which is used for implementing the method disclosed by the invention, comprises a liquid filled ring-shaped pipe, the pressure pump, an oil storage tank, a valve, a liquid outlet connecting pipe, a liquid return connecting pipe and a control mechanism.
Owner:BEIHANG UNIV
Portable ultra-short baseline fixation device and fixation method
ActiveCN112793711BReduce impactReduce stressVessel partsAcoustic wave reradiationWater flowSupport point
The invention discloses a portable ultra-short baseline fixing device and a fixing method, comprising: a retractable rod located on one side of a hull, the retractable rod is rotatably matched with the hull; an ultra-short baseline body, the ultra-short baseline body and the retractable rod The top end is connected and fixed; it also includes a propulsion assembly, which is used to cooperate with the retractable rod to enter the seawater; a rotating assembly, which is used for fixing the propulsion assembly; and a second fixing assembly, which is used for fixing The retractable rod into the sea, through the action of the water flow during the driving process, drives the rotating rod to rotate downward through the pressing plate, and the clamping groove is blocked by the pressure plate and the limit groove, so as to reduce the impact force on the rotating rod, thereby reducing the rotation of the rotating rod. The force of the support point prevents the shaft of the rotating rod from being easily damaged.
Owner:SECOND INST OF OCEANOGRAPHY MNR
A led landscape light for landscape garden
ActiveCN112254083BImprove securityReduce risk of sabotageMechanical apparatusElectric circuit arrangementsLight fluxEngineering
The invention discloses an LED landscape lamp for landscape gardens, which comprises a lamp pole and a lamp body installed on the lamp pole, a cover plate is arranged on the top of the lamp body, and a An annular cavity penetrating up and down, an inner lamp body is arranged in the annular cavity, an LED power supply assembly is installed in the inner lamp body, a light bulb is arranged at the bottom of the inner lamp body, a transparent inner lampshade is installed outside the bulb, and the inner lamp body An outer bracket is fixedly arranged on the top, and the inner lamp body is fixedly installed on the lamp pole through the outer bracket, and more than one solar panel is hingedly arranged on the lamp body. The landscape lamp of the present invention can effectively wrap the lampshade during the day, reduce the probability of the lampshade being damaged, and can hide the solar panel at night, reducing the risk of the solar panel being damaged. At the same time, it can automatically clean the inner and outer walls of the lampshade to maintain the luminous flux. cooling effect.
Owner:怀化都市麦田园林景观工程有限公司
Flexible lifting system
PendingCN110077987AReduce shaking effectGuaranteed stabilityLifting framesStacking articlesControl systemStack machine
The invention discloses a flexible lifting system in order to solve the problem that an existing Z direction telescopic mechanical arm is high in installing field requirement and has certain limitation. The flexible lifting system comprises a conveying unit, a supporting base, driving units and a control system. At least two driving units exist, and the upper ends of the driving units are connected with the supporting base; and the lower ends of the driving units are connected with a stacking machine head. Based on the structural improvement, the flexible lifting system is low in field installing requirement, and has good applicability. Meanwhile, the driving units are arranged in a crossed manner, in combination with the conveying unit of a parallelogram structure, stable running of the stacking machine head can be effectively guaranteed; and based on feedback of a weighing sensor, and cooperation of the driving units, real-time detection and compensation on the lifting speed and position can be achieved, the purpose of synchronous lifting is achieved, and stable running of the stacking machine head is guaranteed. The flexible lifting system is simple in structure, ingenious in concept, reasonable in design and capable of running without maintenance in the later period.
Owner:SICHUAN FUDE ROBOT
Spinning device for iron roughneck
ActiveCN119616384AExtended service lifeStrong bending resistanceDrilling rodsDrilling casingsMechanical engineeringPhysics
The invention discloses an iron roughneck spinner, and relates to the technical field of iron roughneck spinner, the iron roughneck spinner comprises a spinner clamping oil cylinder, the top end of the spinner clamping oil cylinder is fixedly connected with a spinner synchronous diverter valve block, one end of the spinner clamping oil cylinder is fixedly connected with a spinner left support arm, and the other end of the spinner clamping oil cylinder is fixedly connected with a right support arm; a spinner base is fixedly connected between the spinner left supporting arm and the spinner right supporting arm through a pin shaft, and the front end of the spinner left supporting arm and the front end of the spinner right supporting arm are fixedly connected with a left roller assembly and a right roller assembly respectively. The spinner adopts a structure that four motors are connected in parallel, the four motors are synchronously driven in a synchronous shunting mode, the problem that rollers slip due to sinking of a tubular column and the like is solved, meanwhile, full-shaft rollers are adopted for driving, the compressive strength of the structure is enhanced, and the service life of the spinner is prolonged.
Owner:HUBEI JIANGHAN GASOLINEEUM INSTR & METER
PICC (Peripherally Inserted Central Catheter) fixing assist device
The utility model discloses a PICC (Peripherally Inserted Central Catheter) fixing assistor which comprises two groups of binding belts, connecting belts are fixedly mounted on opposite surfaces of the two groups of binding belts, clamping hard blocks are fixedly mounted at two ends of the bottoms of the two groups of binding belts, and an elastic band is fixedly mounted on the front surface of the binding belt at the front end of the two groups of binding belts. An annular magic tape is fixedly mounted at the front end of the elastic band; clamping grooves are formed in the tops of the two sets of limiting rubber plates, clamping hard blocks are clamped in the clamping grooves, bottom pads are fixedly installed at the bottoms of the two sets of limiting rubber plates, and soft rubber pads are fixedly installed at the tops of the bottom pads. By means of the arrangement of the annular hook-and-loop fastener, the input end of the PICC is wrapped and wound, winding and binding of the binding belt are matched, the shaking influence of the input end of the PICC can be relieved, and the problems that the PICC is not prone to disengagement due to the fact that limbs of a patient shake at night, and discomfort of the PICC and the limb insertion end is caused by random shaking are solved.
Owner:NANFANG HOSPITAL OF SOUTHERN MEDICAL UNIV
Net rack anti-seismic support convenient to construct
InactiveCN119466171Aincrease tightnessImprove stabilityProtective buildings/sheltersShock proofingMechanical engineeringCivil engineering
The invention discloses a net rack anti-seismic support convenient to construct, and relates to the technical field of building equipment. The device comprises an embedded part, a base is mounted at the top of the embedded part, a mounting plate is arranged at the top of the base, and a net rack support is fixedly connected to the top of the mounting plate; a fixing assembly is arranged on the top of the base. Through the arrangement of the fixing assembly, the bottom plate and the mounting plate can be fixed through the fixing screw and the nut, when the mounting plate is attached to the bottom plate, the stabilizing rod can be driven to penetrate through the bottom plate, the connecting stability of the net rack support and the embedded part is improved, and meanwhile when the net rack support is affected by vibration, the stabilizing rod can be driven to penetrate through the bottom plate. The limiting rod can be pushed through the acting force of downward movement of the supporting shell, the limiting rod is inserted into the inclined groove in the stabilizer bar, the inclined face on one side of the limiting rod makes contact with the inner wall of the inclined groove, the mounting plate is pushed downwards, the attaching tightness of the mounting plate and the bottom plate is improved, and the shaking influence on fixing bolts is reduced.
Owner:HENAN POLYTECHNIC UNIV
Spacecraft attitude control method based on variable and inertia flow velocity adjustment controller and actuating mechanism of spacecraft attitude control method
InactiveCN103345254AAvoid wear and tearAvoid Static and Dynamic ImbalancesAttitude controlMomentumSpacecraft attitude control
The invention discloses a spacecraft attitude control method based on a variable and inertia flow velocity adjustment controller and an actuating mechanism of the spacecraft attitude control method. The actuating mechanism comprises a main ring liquid filling annular pipe, a main ring pressure pump, an oil storage tank, a valve, a main ring liquid outlet connecting pipe, a main ring liquid return connecting pipe, a variable ring liquid filling annular pipe, a variable ring pressure pump, a variable ring liquid outlet connecting pipe, a variable ring liquid return connecting pipe and a control mechanism. A flowing loop is formed by the main ring liquid filling annular pipe, the main ring pressure pump, the oil storage tank, the valve, the main ring liquid outlet connecting pipe and the main ring liquid return connecting pipe. The other flowing loop is formed by the variable ring liquid filling annular pipe, the variable ring pressure pump, the oil storage tank, the valve, the variable ring liquid outlet connecting pipe and the variable ring liquid return connecting pipe. According to the spacecraft attitude control method based on the variable and inertia flow velocity adjustment controller and the actuating mechanism of the spacecraft attitude control method, the problems of rotation speed saturation of angular momentum exchange type actuating mechanisms in the process of wide-angle attitude adjustment in the prior art and much mass and the size requirement burden, caused by generated actuating mechanism redundant configuration of a traditional actuating mechanism in order to solve the problem of rotation speed saturation, of a spacecraft are solved.
Owner:BEIHANG UNIV