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Hydraulic tension machine control method and control system
PendingCN119527967Aaddress shockeasy to operateFilament handlingApparatus for overhead lines/cablesBrakeMachine control
The invention relates to a control method and a control system for a hydraulic tensioner, the control method comprises the following steps of: regulating and controlling the processes of brake starting, constant tension spreading, reverse traction and delivery and on-load stopping of the hydraulic tensioner, and the control system can realize the control method; by adopting the control method and the control system of the hydraulic tension machine, the hydraulic tension machine can be stably loaded and spread at constant tension, and can be in a completely static pressure maintaining state when the hydraulic tension machine is stopped with load; the problems that in the prior art, a tensioner is insufficient in control stability, safety risks exist when braking is started, and uncontrolled wriggling exists when on-load stopping is conducted are solved.
Owner:GANSU TRANSMISSION & DISTRIBUTION ENG CO +1
Energy taking device of cable on-line monitoring equipment and energy taking management method of energy taking device
PendingCN119324439Aaddress shockImprove online rateDc source parallel operationEmergency power supply arrangementsControl engineeringEnergy supply
The invention relates to the technical field of cable energy taking, and provides an energy taking device of cable online monitoring equipment and an energy taking management method of the energy taking device, the energy taking device comprises a power supply control conversion circuit and a plurality of energy taking modules, the power supply control conversion circuit is connected with the plurality of energy taking modules, and the power supply control conversion circuit is connected with the plurality of energy taking modules. And the power supply control conversion circuit can select at least one energy taking module from the plurality of energy taking modules according to the installation environment condition of the cable on-line monitoring equipment so as to supply power to the cable on-line monitoring equipment. The problem of insufficient energy supply possibly existing in a single power taking mode can be solved, the power taking reliability of the power taking device is improved, and the online rate of cable online monitoring equipment is improved; the transformation mode of the power taking device is flexible, and transformation is convenient; the power taking device can guarantee reliable operation of cable online monitoring equipment, timely discover the condition that the cable load exceeds the standard, take corresponding measures for adjustment, and can solve the problem of impact on the power taking equipment under the condition of high load of the cable.
Owner:GUANGDONG POWER GRID CO LTD +1
Vertical take-off and landing aircraft capable of rapidly replacing rotor wings
Owner:SUZHOU MINTAI AVIATION TECHNOLOGY CO LTD
Conical roller split mechanism and ring rolling mill
ActiveCN224254115UEasy to removeeasy maintenanceMetal rolling stand detailsRolling safety devicesScrew threadIndustrial engineering
The utility model relates to the technical field of forging equipment, and provides a cone roller split mechanism and a ring rolling mill, the cone roller split mechanism comprises a rack, a rotating shaft, a connecting rod, a cone roller, a hydraulic nut and a fastener, the connecting rod penetrates through the rotating shaft; the conical roller and the hydraulic nut are oppositely arranged at the two ends of the connecting rod and are connected in a threaded screwing mode. The fastener is arranged on the hydraulic nut and used for limiting the stroke of the hydraulic nut. The conical roller and the hydraulic nut are arranged at the two ends of the connecting rod, so that the conical roller can be tensioned through the connecting rod by pressurizing the hydraulic nut, and the conical roller and the rotating shaft are fixed; meanwhile, the connecting rod is connected with the conical roller in a screwed mode through threads, the hydraulic nut serves as a pressurizing piece, the conical roller can be loosened after pressure relief, and therefore the conical roller can be disassembled conveniently, and the structure is simple; and the hydraulic nut of the structure is located on the outer side, overhauling and maintenance can be continued conveniently, and application convenience can be improved.
Owner:QINGDAO HENGJUN METALFORMING MASCH CO LTD
Hybrid transmission for commercial vehicle
ActiveCN222296951UImprove riding performanceaddress shockHybrid vehiclesGearing controlLow speedGear wheel
The utility model discloses a hybrid transmission for a commercial vehicle, which comprises a front shell and a rear shell, and a wet clutch, an input shaft, a clutch fixing shaft, a high-low-speed intermediate shaft, a high-low-speed synchronizer, an input driving gear, an input driven gear, a low-speed driving gear and a low-speed driven gear are mounted on the front shell; a driving motor, a motor input shaft, a main variable-speed intermediate shaft, an output shaft, a third-fourth gear synchronizer, a first-second gear synchronizer, a normally-engaged driving gear, a normally-engaged driven gear, a fourth-gear driving gear, a fourth-gear driven gear, a second-gear driving gear, a second-gear driven gear, a first-gear driving gear and a first-gear driven gear are mounted on the rear shell; the motor input shaft is further connected to a high-low speed synchronizer of the front shell. The engine provides power input for the input shaft, two rotating speeds are output to the motor input shaft, the driving motor provides power input for the motor input shaft, and four rotating speeds are output to the output shaft, so that the hybrid transmission has eight gears.
Owner:潍柴新能源商用车有限公司
Charging protection system for electric power operation recorder
ActiveCN222169348Uaddress shockreduce sizeBatteries circuit arrangementsElectric powerCapacitanceCharge current
The utility model relates to the technical field of electric power instruments, and provides an electric power operation recorder charging protection system, which comprises an MOS tube Q2, a resistor R13, a resistor R14, a resistor R15 and a capacitor C2, the first end of the resistor R13 is connected with a switching power supply, the second end of the resistor R13 is grounded through the resistor R14, the capacitor C2 is connected in parallel with the resistor R14, the drain electrode of the MOS tube Q2 is connected with the switching power supply, and the drain electrode of the MOS tube Q2 is connected with the switching power supply. The source electrode of the MOS tube Q2 is connected with the host battery, and the grid electrode of the MOS tube Q2 is connected with the second end of the resistor R13 through the resistor R15. According to the technical scheme, the charging current is controlled, and the problem of peak current impact caused by frequent plugging and unplugging of a power supply is avoided.
Owner:EAST INNER MONGOLIA ELECTRIC POWER COMPANY +3
Hybrid DC link energy storage converter and control method thereof
ActiveCN114977850BSolving Thermal Management IssuesEasy to control temperatureBatteries circuit arrangementsAc-dc conversionCapacitanceHemt circuits
Provided is a hybrid DC chain energy storage converter and a control method thereof. The hybrid DC chain energy storage converter comprises: a positive DC bus; a negative DC bus; a main circuit inductor; at least one high-frequency submodule, comprising a first switch circuit and a first capacitor connected in parallel; a plurality of low-frequency submodules, each comprising a second switch circuit and an energy storage element connected in parallel, the main circuit inductor, at least one high-frequency submodule and a plurality of low-frequency submodules are connected in series to form a series branch, and the series branch is respectively connected to the positive DC bus and the negative DC bus; a controller, coupled to the first switch circuit of at least one high-frequency submodule and the second switch circuits of the plurality of low-frequency submodules, respectively, for controlling the action of the first switch circuit of at least one high-frequency submodule according to the current of the main circuit inductor, and controlling the action of the second switch circuits of the plurality of low-frequency submodules according to the voltage of the first capacitor of at least one high-frequency submodule and the voltage of the plurality of energy storage elements.
Owner:DELTA ELECTRONICS (SHANGHAI) CO LTD
A method for evaluating the hazard of subway tunnel explosion accidents based on generalized interpolation material point method
ActiveCN114862087Baddress shockConvenient guidanceData processing applicationsSustainable transportation
The present invention provides a method for evaluating the hazard of explosion accidents in subway tunnels based on the generalized interpolation material point method. The method uses the generalized interpolation material point method to perform explicit dynamic solutions on the three-dimensional model of the subway tunnel structure and the surrounding rock and soil under the action of explosion. Finally, the model response under the action of explosion is quantitatively calculated, and the partition of personnel injury level and structural damage level is obtained according to the overpressure calculation results and the damage factor calculation results, so as to quantitatively evaluate the hazard of the explosion accident. This method makes up for the defects of previous empirical qualitative evaluation, overcomes the numerical difficulties of traditional finite element simulation methods caused by grid distortion during explosion simulation, and proposes a set of practical and feasible quantitative hazard evaluation methods, which has certain practical application value, will have a positive role in promoting the formulation of special emergency plans, and has guiding significance for post-disaster repair and later recovery work.
Owner:CHONGQING UNIV
Driving control circuit and method for turbine speed regulator
PendingCN121827942Areduce power consumptionaddress shockMachines/enginesSafety/regulatory devicesElectrical connectionElectromagnetic valve
The invention relates to a drive control circuit and method for a steam turbine speed regulator. The drive control circuit comprises a direct-current power supply input unit and at least one drive branch. The direct-current power input unit comprises a live wire and a zero wire; the number of the driving branches is equal to that of the OPC electromagnetic valves, each driving branch comprises an intermediate relay K1 and a contactor KM1, one end of a coil of the intermediate relay K1 is electrically connected with the live wire, the other end of the coil of the intermediate relay K1 is electrically connected with the zero line, one end of a normally open contact of the intermediate relay K1 is electrically connected with the live wire, and the other end of the normally open contact of the intermediate relay K1 is electrically connected with the zero line. One end of a coil of the contactor KM1 is electrically connected with the other end of the normally open contact of the intermediate relay K1, and the other end of the coil of the contactor KM1 is electrically connected with the zero line. The contactor is driven by the intermediate relay, the intermediate relay K1 serves as a control stage, the coil power consumption is small, direct and safe driving can be achieved through a passive dry contact signal of a steam turbine speed regulator, and the problem that a large-current load impacts a precision controller is solved.
Owner:CHINA CHANGJIANG POWER GROUP CO LTD
A light storage and charging fusion system and charging method
ActiveCN118300164BImprove charging efficiencyaddress shockBatteries circuit arrangementsSingle network parallel feeding arrangementsElectrical batteryPower grid
The present invention discloses a photovoltaic storage and charging fusion system and a charging method; the present invention comprises a photovoltaic storage hybrid inverter, a photovoltaic power component, a dual-channel PCS and a battery system; the input side DC in the dual-channel PCS is connected to the battery system, the output side DC is connected to the charging station system, and the AC is connected to the power grid; the PV side in the photovoltaic storage and charging hybrid inverter is connected to the photovoltaic power component, the output side DC is connected to the charging station system, and the AC is connected to the power grid; the photovoltaic storage and charging hybrid inverter and the dual-channel PCS are both communicatively connected to the photovoltaic storage and charging system, and the dual-channel PCS is communicatively connected to the battery system; the charging of the charging station system and the charging and discharging operation of the battery can be supported simultaneously without using the mains power. When there is no vehicle for charging, the storage and charging circuit supplies power to the photovoltaic storage and charging circuit to assist the photovoltaic stable grid-connected discharge power operation function, which can effectively solve the problem of photovoltaic abandoned light with a DC coupled architecture.
Owner:CONTEMPORARY NEBULA TECH ENERGY CO LTD
A method, device, equipment and program product for optimizing scheduling of a road-power coupling system
The application discloses a kind of road-electricity coupling system optimization scheduling method, device, equipment and program product.The method can be determined by according to traffic trip path decision model, traffic space-time distribution rule, fast charging demand space-time distribution rule and basic charging path time consumption data, and then constructs the day-to-day real-time path planning model considering new energy prediction error, to determine the target charging planning result of electric vehicle, road network real-time vehicle distribution result and new energy output scheduling information of grid side, finally based on road-electricity coupling collaborative optimization model, with distribution network operation cost and traffic network travel time cost as joint optimization target, with target charging planning result, road network real-time vehicle distribution result and new energy output scheduling information as constraint condition, determine road-electricity system scheduling result, to solve the impact problem of electric vehicle charging and driving on power grid and traffic network in the prior art, improve new energy utilization and road network traffic efficiency.
Owner:XUZHOU TONGSHAN POWER SUPPLY BUREAU +1
Vehicle-mounted refrigerator capable of achieving full-automatic driving through rope structure
ActiveCN222480909UImprove convenienceaddress shockVehicle arrangementsLighting and heating apparatusIceboxIn vehicle
The utility model belongs to the technical field of vehicle-mounted refrigerators, and particularly relates to a vehicle-mounted refrigerator achieving full-automatic driving through a rope structure. The left side and the right side of the equipment bottom plate are each fixedly provided with a pair of sliding rails, the driven rotating disc is arranged at the front end of the middle of the equipment bottom plate, and the drawer driving connecting piece is arranged on the left side of the equipment bottom plate. The tail of the equipment bottom plate is connected with a fixed base, and a driving turntable is arranged at the upper end of the fixed base and connected with a motor at the tail of the fixed base; a rope is connected between the driven rotating disc and the driving rotating disc, and the two ends of the rope are connected to the drawer driving connecting pieces respectively. A mode of firstly fixing the guide wheel and then threading is adopted, so that the assembly convenience and the assembly efficiency are improved; by means of the middle rope assembly, the convenience of rope tightness adjustment is improved; utilizing a limiting sensor; the problem of impact when the drawer moves to the limit position is solved.
Owner:FOSHAN ALPICOOL ELECTRIC APPLIANCE CO LTD
Mounting cabinet, battery module, trunk assembly and humanoid robot
PendingCN119133760Aaddress shockCell component detailsManipulatorHumanoid robot naoElectrical battery
The invention discloses a mounting cabinet, a battery module, a trunk assembly and a humanoid robot, the mounting cabinet is used for the humanoid robot, and the mounting cabinet comprises a mounting plate, a buffer structure and a plug connector; the mounting plate comprises a first surface and a second surface which are opposite in a first direction; the buffer structure is arranged on the mounting plate and protrudes out of the first surface, the buffer structure comprises a boss and an elastic piece, the boss is arranged on the first surface, the boss and the mounting plate are provided with containing holes extending in the first direction and penetrating through the boss and the mounting plate, at least part of the elastic piece is contained in the containing hole, and one end of the elastic piece extends out of the boss from the containing hole; the elastic piece extends out of the end face of the boss and is elastically abutted against the battery assembly. The plug connector is connected with the mounting plate and protrudes out of the first surface, the plug connector and the buffer structure are arranged at an interval, and the plug connector is used for being electrically connected with a battery assembly in a plug-in mode. After the mounting cabinet is used, the impact of the battery assembly on other parts of the humanoid robot is small.
Owner:SHANGHAI FOURIER INTELLIGENCE CO LTD
Plunger type swing cylinder with signal output function for concrete pump
ActiveCN224301153UReduce movement speedaddress shockFluid-pressure actuatorsPumpsCylinder blockOil intake
The utility model discloses a kind of plunger type swing cylinder with signal output function for concrete pump, it is related to concrete pump component field, and its technical scheme main point is: including cylinder and total plunger, oil inlet and signal port are equipped on the cylinder, the total plunger is arranged in cylinder and can be moved along cylinder axial direction, the total plunger is equipped with cavity in one end inside cylinder, effect is through the damping effect or elastic deformation of buffer component absorption kinetic energy, slow down the moving speed of total plunger, to realize buffering effect, avoid the impact problem caused by structural restriction of traditional piston type swing cylinder;And this swing cylinder is only set oil inlet and signal port, cancel the oil outlet of traditional piston type swing cylinder, avoid the back pressure interference of oil return structure with multiple oil ports, simultaneously sealed control to the hole moving path using sealing ring A, ensure that signal port is only in set position conduction, realized the double function of hydraulic signal stable feedback and buffering.
Owner:JIANGSU JIANGLIN TECH CO LTD