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43results about How to "Will not reverse" patented technology
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Isolation type non-woven fabric textile winding machine and application method
The invention discloses an isolation type non-woven fabric textile winding machine which belongs to the technical field of textile winding. A cooling fan is arranged at the top of a fixed bracket; anupper flattening roller and a lower flattening roller are arranged at the top of a first bracket in sequence from top to bottom; a tensioning roller is arranged at the top of a third bracket; the tensioning roller is connected onto the third bracket through a second connecting shaft; a second through hole is formed in the top of a side wall of a second bracket; a second fixed block is arranged atthe top of the second through hole; a second rigid spring is arranged at the bottom of the second fixed block; a third connecting shaft is provided with a tracking roller; six groups of winding rollers with the same structure are arranged below the tracking roller; the winding rollers are connected with a connecting frame through a fourth connecting shaft; a ratchet wheel mechanism which is matched with a mounting groove is arranged at the left end of a fifth connecting shaft. The winding machine disclosed by the invention is reasonable in structural design and high in automation degree; simple and convenient textile winding work can be ensured and the winding effect of the fabric is remarkable.
Owner:宁夏中恒创越新材料科技有限公司
Rotor positioning method, positioning device and control system for brushless direct current motor
ActiveCN108631661AReduce the time to start positioningSimplified rotor position identification methodStarter arrangementsControl systemElectric machine
The invention discloses a rotor positioning method, a rotor positioning device and a control system for a brushless direct current motor, wherein the positioning method comprises the following steps:when performing conduction control on the stator windings of the motor according to a preset conduction mode, applying a voltage detecting pulse of a first preset time to different phases of the stator windings of the motor in turn, and obtaining a plurality of current values by acquiring current values of the stator windings at each phase; acquiring a maximum current value among the plurality ofcurrent values, and marking the phase corresponding to the maximum current value as the first phase; acquiring the phase in which the current value is larger in the two phases adjacent to the first phase, and marking the same as the second phase; obtaining a sector in which the rotor of the motor is located according to according to the first phase and the second phase, and obtaining the positionof the rotor of the motor according to the sector in which the rotor is located. Therefore, the position of the rotor of the motor may be quickly and accurately obtained without the appearance of theproblem of abnormal noise as well as jitter and positioning errors. In addition, the method is simple, and the blind spotless positioning may be realized.
Owner:JIANGSU MIDEA CLEANING APPLIANCES +1
Tensioning winch transmission device of belt conveyer
InactiveCN101941580ARealize frequent switchingAvoid frequent switchingConveyorsToothed gearingsEngineeringWinch
The invention relates to a tensioning winch transmission device of a belt conveyer, which mainly comprises a box body, a main transmission mechanism, an auxiliary transmission mechanism and an output transmission mechanism which is arranged at the front end of the box body and connected with the main transmission mechanism, wherein the main transmission mechanism and the auxiliary transmission mechanism are arranged in the box body in parallel. In the invention, a gear pair comprising a main clutch, an auxiliary clutch and five gears is adopted to achieve the purpose that an input shaft of a winch rotates along one direction all the time while reeling off and rolling up so as follow the tensile force change of a conveyer belt and meet the requirement on the change of the conveyer belt within a larger range; dynamic braking can be directly carried out through a motor to limit the maximum reeling off speed so as to prevent safe accidents; and soft start during rolling up can be realized, thus impact force born by a steel wire rope and relevant components is reduced, and the service life of the components is prolonged. The device can be used for precisely controlling the tensioning force and is suitable for controlling the tensioning winch of the belt conveyer, particularly for a narrow space under a coal mine. The device has the advantages of simple structure, convenient maintenance, low manufacturing cost, strong generality and high reliability.
Owner:CHINA UNIV OF MINING & TECH +1
Plate non-return valve with lateral downstream and control edge
InactiveCN101063416AReduce closing forceReduce collision energyGearingCheck valvesEngineeringCheck valve
The invention relates to a check valve for vehicle. The check valve apparatus has a valve housing and valve unit. The device has a valve housing with inlet and outlet openings, and sealed edge. The valve unit is movably supported in the housing. A flow cross section (A1) is formed between the outlet opening and the unit, when the unit is arranged in the first position. The outlet opening is closed by the unit when the unit is arranged in a second position. Meanwhile, the valve unit is movably supported between two positions. When the valve element moves in the first mobile area, the flow cross section (A1) continuously changes and provides a reduced flow cross section (A2) relative to the first flow cross section when the valve unit moves in the second mobile area. When the valve unit is in the second position, the valve unit is at the sealed edge.
Owner:SCHAEFFLER KG
Dust collector and control method, device and system of brushless direct current motor
InactiveCN111384880ARun accuratelyGuaranteed uptimeElectronic commutation motor controlElectric motor controlDC - Direct currentElectric machine
The invention discloses a control method, device and system for a dust collector and a brushless direct current motor, and the method comprises that: in a rotor pre-positioning stage, the pre-positioning of a rotor of the motor is performed through employing a static pulse positioning method so as to obtain the position of the rotor of the motor; in a low-speed operation stage, a dynamic pulse detection method or a flux linkage function method is adopted to obtain a commutation point of the motor, and the motor is controlled to perform commutation according to the commutation point; and in themedium-high speed operation stage, the counter potential zero-crossing point of the motor is detected in a mode of combining the counter potential zero-crossing detection time interval and the counter potential zero-crossing detection method, and the motor is controlled to perform phase commutation according to the counter potential zero-crossing point. Therefore, the starting and positioning time of the motor can be greatly reduced, the motor is ensured not to rotate reversely during starting, abnormal sound and jitter during positioning are solved, accurate commutation of the motor in a low-speed operation stage can be realized, the reliability is high, a counter electromotive force zero-crossing point can be timely and accurately detected, and the motor is ensured to stably operate atan extremely high rotating speed.
Owner:JIANGSU MIDEA CLEANING APPLIANCES +1
Automatic irrigation device used in municipal gardens
InactiveCN109496798AWill not reverseWatering devicesCultivating equipmentsEngineeringSpray irrigation
The invention belongs to the technical field of irrigation, and in particular, relates to an automatic irrigation device used in municipal gardens, wherein the device comprises a water tank, an anti-water overflow switch, a leaf spring, a swing bar and a recognition mechanism. When irrigation operation is performed, water of the water tank can be drained into an identification box to immerse soilof the identification box; when the soil in the identification box is completely wet, the recognition mechanism pulls the swing bar to swing downwards by gravity, so that a heavy sealing plate shieldsa drainage pipe, and irrigation can automatically stop. After water in the soil of the identification box is evaporated and the soil of the identification box becomes drier, under the lighter identification box and the resetting force of the leaf spring, the swing bar swinging upwards makes the heavy sealing plate release the shielding of the drainage pipe, and the spray irrigation device is usedfor automatic irrigation. The irrigation device does not need quantitative irrigation, and can be used for automatic irrigation when the soil in the garden green space becomes drier; irrigation frequency and water consumption of the irrigation device can be reduced to a certain extent, and the purpose of saving resources advocated by China can be achieved to a certain extent.
Owner:蒋菊生
Integrated PCR detection experiment cabin
PendingCN111806328AReduce build timeEasy to transportMicrobiological testing/measurementItem transportation vehiclesNucleic acid detectionReal-time computing
The invention provides an integrated PCR detection experiment cabin. The cabin comprises a protective clothing wearing room, a sample treatment room, a nucleic acid detection room, a buffer room and adisinfection room. When PCR detection needs to be carried out, a cabin body can be transported to a destination through a transport vehicle, and then PCR detection can be directly carried out so thatbuilding time of the PCR detection experiment cabin is greatly saved, and rapid and effective experiment cabin detection points are provided for emergencies. The cabin body can move at any time through the transport vehicle so that PCR detection work can be rapidly carried out.
Owner:北京戴纳实验科技有限公司
Flue-cured tobacco intensive float breeding hardening-seedling device
The invention discloses a flue-cured tobacco intensive float breeding hardening-seedling device, and relates to the technical field of crop planting equipment. The flue-cured tobacco intensive float breeding hardening-seedling device is composed of a floating disk 8, a nursery pond 10, a fixing assembly, a rack assembly, a transmission assembly, a locking assembly and a rope rotating assembly. The floating disk 8 is floated in the nursery pond 10. The flue-cured tobacco intensive float breeding hardening-seedling device has the advantages of being convenient to install, convenient to maintain, easy to use, capable of well achieving the operation of float breeding and hardening-seedling and improving the quality of tobacco seedlings and suitable for float breeding hardening-seedling of various crops.
Owner:湖南省烟草公司永州市公司
Platform construction system
PendingCN109098486AAvoid wastingPromote environmental protectionTheatresKeelArchitectural engineering
The invention discloses a platform construction system. The platform construction system comprises a keel and a cover board, elastic cover board positioning clamp parts are arranged on the keel, and the cover board comprises side boards which are clamped into the elastic cover board positioning clamp parts. The platform construction system has the advantages of cyclic utilization, good environmentfriendliness, convenience and quickness in mounting and demounting, high accuracy in mounting and positioning of components, good decoration effect and capability of avoiding reverse mounting of structural components.
Owner:YEEDAA ENVIRONMENTAL TECH SHANGHAI CO LTD
Distribution box carrying auxiliary device
InactiveCN110395522AWon't slideSimple structureManual conveyance devicesEngineeringMechanical engineering
The invention discloses a distribution box carrying auxiliary device. The device comprises a folding frame mechanism and rolling wheel mechanisms, wherein the rolling wheel mechanisms are installed onthe folding frame mechanism through rolling wheel rotating shafts; the folding frame mechanism comprises a plurality of first supporting plates and a plurality of second supporting plates, wherein the first supporting plates and the second supporting plates are connected through the rolling wheel rotating shafts; and supporting arms are arranged on the lower portion of the folding frame mechanism, and ratchet mechanisms coaxial with the rolling wheel rotating shafts are arranged in the rolling wheel mechanisms. When a distribution box is carried to a concrete table, soil or other objects arelaid under the concrete table to form a slope, the auxiliary device is paved on the slope, the rotating direction of the rolling wheel mechanisms is matched with the inclined upward moving direction of the distribution box, the distribution box is placed on the auxiliary device, and is slowly upwards moved by manually pulling the distribution box, due to existence of the ratchet mechanisms, the rolling wheel mechanisms will not turn over, it is ensured that the distribution box cannot slide downwards, the structure is simple, and the device can be transported by a distribution box transport vehicle.
Owner:ZHANGQIU POWER SUPPLY CO OF STATE GRID SHANDONG ELECTRIC POWER CO +1
Diaphragm assembly
The invention relates to a diaphragm assembly. The diaphragm assembly comprises a rupture diaphragm, a gasket and a grate. The outer diameter of the gasket is smaller than that of the grate. The gasket is designed with a blind hole. The rupture diaphragm is designed with a protrusion block. When the diaphragm assembly is assembled, the protrusion block on the rupture diaphragm is embedded into the blind hole of the gasket, and one side provided with a nick, of the rupture diaphragm is fitted to the grate. When the diaphragm assembly is mounted, the grate is connected to a flange on the upstream side of the air flow. The diaphragm assembly is made of a pure copper diaphragm and accordingly has good compatibility with high-temperature and high-speed oxygen. The fail-proof design is used for ensuring that the rupture diaphragm is not mounted reversely when the diaphragm assembly is assembled and the diaphragm assembly is not reversely mounted in a pipe.
Owner:SHANGHAI AEROSPACE SYST ENG INST
Rotor positioning method, rotor positioning device and control system of brushless direct current motor
ActiveCN108448951AShorten the timeWill not reverseElectronic commutatorsStarter arrangementsControl systemThree-phase
The invention discloses a rotor positioning method, a rotor positioning device and a control system of a brushless direct current motor. The positioning method comprises the following steps: when conduction control is carried out on a stator winding of the motor according to a two-phase conduction mode and a three-phase conduction mode respectively, applying voltage detection pulses at different phase positions of the stator winding of the motor in sequence, and reaching the time required for a preset current value to obtain multiple time by obtaining the current value of the stator winding ateach phase position; obtaining the shortest time in the multiple time; obtaining the section of the rotor of the motor according to the shortest time, and obtaining the rotor position of the motor according to the section of the rotor of the motor. Therefore, the rotor position of the motor can be obtained quickly and accurately, the problems of abnormal sound, shaking and positioning mistakes cannot appear, and the method is simple and can realize non-blind area positioning.
Owner:JIANGSU MIDEA CLEANING APPLIANCES +1
Preparation method of betel nut with gum base as carrier
The invention provides a preparation method of a betel nut with a gum base as a carrier. The preparation method comprises the following steps: uniformly mixing a softened gum base, a concentrated extract of betel nut juice and other auxiliary agents, carrying out standing and cooling, performing extruding through a food sandwich extruder, adding a marinated block added with 6-15% of xanthan gum, conducting homogenizing, carrying out punch forming, and conducting aging to obtain the betel nut. The betel nut prepared by using the method is less in bitterness, obvious in chewiness, complete in gum base texture, good in chewiness, and savory and mellow in taste, and capable of greatly reducing mechanical wearing of teeth, does not puncture oral mucosa, and greatly reduces harm of eating of thebetel nut.
Owner:湖南宾之郎实业集团有限公司
Rice transplanter type vehicle transmission
The invention relates to a rice transplanter type vehicle transmission, comprising a transmission cabinet, a differential, steering clutches, a brake, and a steering transmission mechanism. The differential is installed on the transmission cabinet and is connected with a left half axle and a right half axle. The transfer-drive sliding variable gear of a transmission shaft is corresponding to a transfer-drive duplicate gear which is installed on a transfer-drive transmission shaft. A transfer-drive driving taper gear on the transfer-drive transmission shaft is meshed with a transfer-drive output taper gear shaft. Half-shaft output driving taper gears are respectively connected with a left tail end output shaft and a right tail end output shaft through a half-shaft output driven taper gear and respective steering clutches. A differential lock installed on the left half axle is opposite to a differential housing. The brake is installed on a right housing and a differential transmission shaft. The second transfer-drive taper gear on the differential housing is meshed with a second transfer-drive taper gear shaft. The rice transplanter type vehicle transmission is characterized by compact structure, good installation and maintainability, and reliable use, and adapting to multifunctional configuration requirements.
Owner:CHANGZHOU DONGFENG AGRI MACHINERY GROUP
Rotor positioning method, positioning device and control system for brushless direct current motor
ActiveCN108631660AShorten the timeWill not reverseStarter arrangementsElectric machineControl system
The invention discloses a rotor positioning method, a rotor positioning device and a control system for a brushless direct current motor, wherein the positioning method comprises the following steps:when performing conduction control on the stator windings of the motor according to a preset conduction mode, applying a voltage detecting pulse to different phases of the stator windings of the motorin turn, and obtaining a plurality of times by acquiring a time required for the current value of each phase of the stator windings to reach a preset current value; acquiring a preset time-sector relationship table according to the preset conduction mode; obtaining a sector in which the rotor of the motor is located according to a plurality of times and the preset time-sector relationship table,and obtaining the position of the rotor of the motor according to the sector in which the rotor of the motor is located. Therefore, the position of the rotor of the motor may be quickly and accuratelyobtained without the appearance of the problem of abnormal noise as well as jitter and positioning errors. In addition, the method is simple, and the blind spotless positioning may be realized.
Owner:JIANGSU MIDEA CLEANING APPLIANCES +1
Glue injection head and glue injection machine with same
The invention provides a glue injection head and a glue injection machine with the same. The glue injection head comprises a glue head body. Glue injection channels are formed in the glue head body. The glue injection head is characterized in that the glue head body is further provided with pressure holes communicated with the upper ends of the glue injection channels and communicated with a pressure device of the glue injection machine; and under the effect of the pressure device, positive pressure or negative pressure are formed at the upper ends of the glue injection channels. According to the glue injection head and the glue injection machine, the pressure holes are formed, the negative pressure state is formed at the upper ends of the glue injection channels when glue injection is stopped, and liquid glue in the glue injection channels stays in the glue injection channels and cannot drop down continuously under the effect of atmospheric pressure; the positive pressure state is formed at the upper ends of the glue injection channels when the glue injection channels are cleaned, so that all materials can be sprayed out through glue injection nozzles.
Owner:鹿敏
Platform construction system
PendingCN109098485AAvoid wastingPromote environmental protectionTheatresKeelArchitectural engineering
The invention discloses a platform construction system. The platform construction system comprises a keel, a cover board and a frame, the frame is fixed to the keel and comprises a plurality of framestrips, and at least one of the left end face and the right end face of every frame strip is inclined or curved. The platform construction system has the advantages of cyclic utilization, good environment friendliness, convenience and quickness in mounting and demounting, high accuracy in mounting and positioning of components, good decoration effect and capability of avoiding reverse mounting ofthe structural components.
Owner:YEEDAA ENVIRONMENTAL TECH SHANGHAI CO LTD
Rotor positioning method and device and control system for brushless direct current motor
ActiveCN108336929AReduce the time to start positioningWill not reverseElectric motor controlStarter arrangementsElectric machineControl system
The invention discloses a rotor positioning method and device and control system for a brushless direct current motor. The method comprises the steps that when conduction control is conducted on a stator winding of the motor according to a preset conduction manner, voltage detection impulses of first preset time are sequentially exerted on different phase positions of the stator winding of the motor, and multiple current values are obtained through obtaining the current values of each phase position of the stator winding; a preset current-sector area relationship table is obtained according tothe preset conduction manner; a sector area where the rotor of the motor is located is obtained according to multiple current values and the preset current-sector area relationship table, and the position of the rotor of the motor is obtained according to the sector area where the rotor of the motor is located. By means of the method, the position of the rotor of the motor can be rapidly and accurately obtained, the problems of abnormal sounds, vibrations and positioning errors are avoided, the method is simple, and non-blind-area positioning can be achieved.
Owner:JIANGSU MIDEA CLEANING APPLIANCES +1
Rotor positioning method and positioning device and control system of brushless DC motor
ActiveCN110868116AShorten the timeWill not reverseStarter arrangementsDC - Direct currentElectric machine
Owner:JIANGSU MIDEA CLEANING APPLIANCES +1
Floating power generation system utilizing ocean wave energy
PendingCN113309655AImprove energy utilizationWill not reverseMachines/enginesEngine componentsWave power generationGear wheel
The invention discloses a floating power generation system utilizing ocean wave energy, and relates to the technical field of wave power generation. The floating power generation system comprises a floating air bag, a core control box is installed at the bottom end of the floating air bag, connecting rods are installed on the four sides of the core control box, power generation boxes are installed at the ends, away from the core control box, of the four connecting rods, and a first power generation mechanism is installed on the inner side of each power generation box. The first power generation mechanisms and second power generation mechanisms are arranged, when waves are huge, the upward moving force of a floating mechanism on a first rack is large enough, the vertical moving fall of the first rack is large, the first rack moves to enable a first gear to rotate to enable the first power generation mechanisms to generate power, and meanwhile, a control plate at the bottom end of the first rack moves upwards, an idle stroke ring moves upwards, and at the moment, the second power generation mechanisms also generate power, so that the energy utilization rate of the huge waves is increased.
Owner:海南电网有限责任公司三沙供电局
Energy-saving and environment-friendly in-wall wire laying and fixing device for building construction
ActiveCN112186683ASimple structureEasy to operateElectrical apparatusStructural engineeringArchitectural engineering
The invention discloses an energy-saving and environment-friendly in-wall wire laying and fixing device for building construction. The device comprises a mounting shell; the mounting shell is connected with two movable rods through an adjusting mechanism; the movable rods penetrate through the two side walls of the mounting shell and are fixedly connected with abutting plates; and the side walls of the abutting plates are fixedly connected with limiting teeth; an empty shell is fixedly connected to the side wall of the mounting shell; a movable plate is fixedly connected to the inner wall of the empty shell through a plurality of reset springs; the side walls of the two sides of the movable plate are slidably connected with the inner wall of the empty shell; two sets of limiting plates areslidably connected to the side walls, away from the reset springs, of the movable plates; the side walls of the limiting plates abut against the inner wall of the empty shell; and the side walls of the limiting plates are fixedly connected with sliding rods. According to the energy-saving and environment-friendly in-wall wire laying and fixing device for building construction of the invention, electric wires and pipelines with different widths can be stably clamped, the steering of the electric wires and the pipelines can be conveniently adjusted, grooves with different widths can be stably fixed, and the positions of the cables and the pipelines can be stably limited.
Owner:黑龙江省建筑安装集团有限公司
A glue injection device
ActiveCN105149168BGlue reverseWill not reverseLiquid surface applicatorsSpraying apparatusEngineeringInjection device
The invention provides a glue injection device, which includes a moving mechanism, a working platform and a control device, wherein it also includes: at least one glue tank; a glue injection head installed on the movement mechanism, and at least one glue inlet is provided on the glue injection head holes and pressure holes, and the glue injection head is defined with a glue injection channel; at least one pumping device, each pumping device is configured to transport the glue in a glue tank to the glue tank through a glue inlet hole under the control of the control device The glue injection channel is used to inject glue to the object placed on the working platform; and the pressure device is connected to the pressure hole and is configured to: when the glue injection is stopped or a preset time after the glue injection is stopped, it is controlled by the control device Open it down to make the upper end of the glue injection channel form a negative pressure; or, when cleaning the glue injection head, open it under the control of the control device to make the upper end of the glue injection channel form a positive pressure. The glue injection device can prevent the glue liquid from continuing to drop after the glue injection is stopped, and can prevent the backflow of the glue liquid in the glue injection head during glue injection.
A positioning device for a segment demoulding device
ActiveCN111590742BEven by forceExtended service lifeDischarging arrangementAuxillary shaping apparatusLine sensorElectric machinery
A positioning device of a segment demoulding device, which is arranged on the panel of a vacuum suction cup, includes a motor, a worm, a rotating support component, a positioning head, a positioning rubber sleeve, a fixing head, a fixing screw, a control device and a light sensor, wherein the positioning The head includes a flange in the middle and a cylindrical structure set on both sides of the flange. The cylindrical structure on one side is fitted into the rotating support component, and the outer side of the cylindrical structure on the other side is fitted with a fixed head and a fixed screw to fit the positioning rubber sleeve. , the light sensor will sense the bright-dark-bright process during each drawing process, and the control device detects the end of the drawing process through the light sensor, the control device controls the motor to rotate, and drives the positioning rubber sleeve to rotate at a fixed angle, The positioning device can change the force-bearing position of the positioning sleeve on the positioning head according to the number of times of use, and can regularly remind the replacement of the positioning sleeve that has reached the end of its service life.
Owner:WEIFANG UNIV OF SCI & TECH
Rotor positioning method and device for brushless DC motors and control system
ActiveCN110752802AReduce the time to start positioningWill not reverseElectric motor controlStarter arrangementsDC - Direct currentElectric machine
The invention discloses a rotor positioning method and device for brushless DC motors and a control system. The positioning method comprises the following steps of applying a first preset time of voltage detection pulse to different phases of a stator winding of a motor in sequence when conduction control is carried out on the stator winding of the motor according to a preset conduction manner, and obtaining a plurality of current values through obtaining the current value, at each phase, of the stator winding; obtaining a preset current-sector relationship table according to the preset conduction manner; and obtaining a sector where a rotor of the motor is located according to the plurality of current value and the preset current-sector relationship table, and obtaining the rotor positionof the motor according to the sector where the rotor of the motor is located. Therefore, the rotor position of the motor can be rapidly and correctly obtained without the problems of abnormal sounds,shakes and positioning errors, and the method is simple and is capable of realize non-blind area positioning.
Owner:JIANGSU MIDEA CLEANING APPLIANCES +1
Dust collector and control method, device and system of brushless direct current motor
ActiveCN111835242AReduce the time to start positioningWill not reverseElectronic commutatorsDC - Direct currentElectric machine
The invention discloses a dust collector and a control method, device and system of a brushless direct current motor. The control method comprises the steps of in a rotor positioning stage, obtainingthe rotor position of the motor through a pulse injection method; and judging whether the pulse injection method is successful or not according to the rotor position of the motor, if not, controllingthe rotor of the motor to rotate to a preset position by adopting a forced pre-positioning method, and if so, ending. Therefore, the position of the rotor of the motor can be quickly and accurately obtained, the problems of abnormal sound, shaking and positioning errors are avoided, the method is simple, blind-area-free positioning can be realized, and meanwhile, the rotor of the motor can still be quickly and accurately positioned under an extremely abnormal condition.
Owner:JIANGSU MIDEA CLEANING APPLIANCES +1
Bridge pier stud bent cap formwork system and construction method
ActiveCN112813806AReduce installation difficultyImprove the situation of excessive stressClimate change adaptationBridge structural detailsBraced frameArchitectural engineering
The invention relates to the field of bridge construction, and particularly relates to a bridge pier stud bent cap formwork system and a construction method. The bridge pier stud bent cap formwork system comprises a pier stud, at least two groups of transversely penetrating supporting rods transversely penetrating through the pier stud, a supporting frame laid on the transversely penetrating supporting rods and a bent cap mold mounted on the supporting frame; each transversely penetrating supporting rod comprises an upper supporting rod and a lower supporting rod which are vertically opposite, the upper supporting rod and the lower supporting rod are parallel and transversely penetrate through the pier column, the ends of the upper supporting rod and the lower supporting rod stretch out, and an auxiliary supporting frame is connected between the upper supporting rod and the lower supporting rod; the supporting frame comprises a main cross beam frame connected to the same ends of the at least two upper supporting rods, an auxiliary supporting rod is connected to the main cross beam frame, and the lower end of the auxiliary supporting rod is connected to an auxiliary supporting frame; and the number of the main cross beam frames connected to the two ends of the upper supporting rod is the same, a reinforcing rod is connected between the main cross beam frames, and the cover beam mold is installed on the main cross beam frames and the reinforcing rod. The formwork structure of the bent cap is optimized, and the installation difficulty of a formwork system is reduced.
Owner:安徽仁成建设工程有限公司
a wire socket
ActiveCN107275813BCompact designReduce volumeElectrically conductive connectionsEngineeringPower strip
The invention discloses a connector base which includes a wiring board, a bottom board, and a plurality of inserts installed between the wiring board and the bottom board. Each insert includes an insert body, a first contact terminal, a second contact terminal and a wire pressing piece, wherein the first contact terminal protrudes upward from one end of the insert body, the second contact terminal protrudes upward from the middle of the insert body, and the wire pressing piece is arranged at the other end of the insert body. The first contact terminals are arranged at intervals in a row, and protrude from the wiring board. The second contact terminals are arranged at intervals in a row, and protrude from the wiring board. The wire pressing pieces are arranged at intervals and electrically connected with a plurality of wire pressing terminals. The wire pressing terminals are arranged at intervals in a row and installed on the wiring board. The first contact terminals and the second wiring terminals are used for being connected with a motor. The wire pressing terminals are connected with a fan coil load. The connector base is applicable to both a single-machine unit and a double-machine unit. The inserts are simple. The connector base has a compact overall structure.
Owner:ZHONGSHAN BROAD OCEAN
Rotor positioning method, positioning device and control system of brushless DC motor
ActiveCN108631661BShorten the timeWill not reverseStarter arrangementsDC - Direct currentElectric machine
The invention discloses a rotor positioning method, a rotor positioning device and a control system for a brushless direct current motor, wherein the positioning method comprises the following steps:when performing conduction control on the stator windings of the motor according to a preset conduction mode, applying a voltage detecting pulse of a first preset time to different phases of the stator windings of the motor in turn, and obtaining a plurality of current values by acquiring current values of the stator windings at each phase; acquiring a maximum current value among the plurality ofcurrent values, and marking the phase corresponding to the maximum current value as the first phase; acquiring the phase in which the current value is larger in the two phases adjacent to the first phase, and marking the same as the second phase; obtaining a sector in which the rotor of the motor is located according to according to the first phase and the second phase, and obtaining the positionof the rotor of the motor according to the sector in which the rotor is located. Therefore, the position of the rotor of the motor may be quickly and accurately obtained without the appearance of theproblem of abnormal noise as well as jitter and positioning errors. In addition, the method is simple, and the blind spotless positioning may be realized.
Owner:JIANGSU MIDEA CLEANING APPLIANCES +1
Rotor positioning method, positioning device and control system of brushless DC motor
ActiveCN108336929BReduce the time to start positioningWill not reverseElectric motor controlStarter arrangementsDC - Direct currentElectric machine
Owner:JIANGSU MIDEA CLEANING APPLIANCES +1
Manual-automatic integral lifting gear
Owner:新西奥电梯集团有限公司
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