160results about How to "Reduce fever" patented technology

The utility model relates to the technical field of automobile output shafts, and discloses an automobile output shaft with torque overload protection, which comprises an output shaft body, one end of the output shaft body is fixedly connected with a coupler, one end of the coupler far away from the output shaft body is fixedly connected with a connecting shaft, and one end of the connecting shaft far away from the coupler is fixedly connected with a transmission column. A spline shaft is fixedly connected to the end, away from the transmission column, of the fixed shaft, a spline sleeve is slidably connected to the outer side of the spline shaft, a spring is fixedly connected to one end of the spline sleeve, a disc spring is fixedly connected to the end, away from the spline sleeve, of the spring, and a tooth column is fixedly connected to the end, away from the spring, of the disc spring; high-frequency small-amplitude torque fluctuation is absorbed through the springs, the disc springs cope with low-frequency large-amplitude overload impact, the springs and the disc springs are connected in series to form a graded protection mechanism of flexible buffering and rigid torque limiting, and then the torque overload protection effect is achieved.

The utility model discloses a bearing penetrates cover and bearing assembly for dry -type continuous casting, this bearing penetrates cover includes: the whole is hollow's cover body of gyroid, the cover body has opposite first side and second side along the first direction, the first side forms the through -hole of variable aperture to the second side, the through -hole includes first hole section and second hole section who set up in order from the first side to the second side, the inner diameter of first hole section is less than the inner diameter of second hole section, the inner wall of first hole section is opposite and forms the sealing groove, the outer surface of cover body is provided with the lap joint, the bearing penetrates cover is used for embedding installation in the bearing seat, and the lap joint is used for abutting in bearing seat, penetrates the cover sealing piece, the cover sealing piece is metal sealing piece, and the cover sealing piece installs in sealing groove. The application can effectively improve the reliability of bearing penetrates cover when using, and then improve the service life greatly.

This invention discloses a stator assembly, a motor, a compressor, and a refrigeration device, relating to the field of induction motor technology. The stator assembly includes a stator core and stator windings. The stator core has Q stator slots, which are divided into large slots and small slots according to their cross-sectional area. The stator windings include concentrically wound main windings and auxiliary windings. The main windings have m coils, and the auxiliary windings have n coils. The main windings are numbered B1, B2, B3...B according to their winding span from largest to smallest. m The secondary windings are numbered A1, A2, A3, ... A, according to their winding span from largest to smallest. n ;B2 to B m In the stator slots where the coils are located, there is at least one single main winding slot, and each single main winding slot contains only the main winding. At least one of the single main winding slots is a minor slot; 16≦Q≦32, 3≦m≦14, 3≦n≦12. The technical solution provided by this invention is used to reduce the harmonic ratio of the motor, thereby reducing motor heat generation and improving motor efficiency.

The utility model provides a kind of high-temperature-resistant long-life ball bearing retainer, it is related to bearing retainer technical field, and it includes: hold frame body;The retainer body is annular structure, and ball hole is arranged in annular array shape on the inner wall of retainer body;Annular array shape is arranged in the through hole of the outer wall of retainer body, and the through hole is circular hole structure, and the through hole arranged in annular array shape is jointly composed of the heat dissipation structure of retainer body.Utilize nickel-based alloy high melting point (1300 DEG C above) and strong oxidation resistance, so that retainer is not easy to heat softening or oxidation corrosion failure under high temperature working condition (such as industrial kiln, aeroengine), directly prolongs the service life under high temperature environment;Through type circular through hole forms three-dimensional heat dissipation channel, cooperates the forced convection of lubricating medium (oil / gas), and internal heat is quickly taken away.For example in high-speed motor, airflow passes through through hole can make retainer temperature reduce 20%~30%, avoid local overheating to cause material failure.

The invention discloses a high-dielectric low-loss dielectric material for a high-voltage ceramic capacitor, and relates to the technical field of dielectric materials, which comprises the following steps: S1, preparing bismuth stannate; step S2, preparation of bismuth titanate; step S3, preparation of barium zirconate; step S4, compression molding and sintering; and S5, printing an electrode. The high-dielectric low-loss dielectric material for the high-voltage ceramic capacitor is high in dielectric constant and low in dielectric loss, and meets N4700 temperature characteristics and environmental protection requirements.

This invention provides a solar-powered full-spectrum frequency-division thermo-electric combined-drive air conditioning system and its control method, belonging to the field of solar heat pumps. It addresses the problems of existing solar-powered jet-compression combined refrigeration systems, which cannot effectively utilize all wavelengths of solar energy, suffer from intermittent instability during power supply, and exhibit low cooling efficiency due to excessively high compression ratios under high temperature difference conditions. During conventional cooling, the system allows selection of single-jet cooling, single-compression cooling, jet-compression combined cooling, or dual-jet-compression combined cooling based on daytime or nighttime conditions and cooling requirements, achieving stable all-weather air conditioning while saving energy. In addition to the conventional cooling mode, a dual-jet-compression cooling mode can be operated to achieve high temperature difference cooling while maintaining a constant compression ratio. It fully utilizes solar thermo-electricity for self-generation and consumption, enabling switching between jet and compression air conditioning modes to ensure all-weather air conditioning needs while achieving energy conservation and emission reduction.

The application belongs to a valve structure, and aims at the technical problem that the existing electromagnetic valve for satellites is difficult to balance in response speed, power consumption, weight, environmental adaptability and long-term reliability, and provides a special medium axial flow self-locking electromagnetic valve for satellites, which adopts open coil, close coil and permanent magnet cooperation to drive the axial movement of armature, and keeps the valve open or closed after power off, so as to reduce the continuous power consumption and improve the reliability in satellite application. The axial flow fluid channel is formed through the internal channel of the framework, the peripheral channel of the armature and the internal channel of the valve seat assembly, so as to reduce the flow resistance and improve the medium flow capacity. The valve core and the valve seat assembly sealing surface are coaxially matched, the pre-tightening and buffering effect of the elastic member are beneficial to improve the sealing stability, reduce the impact wear and prolong the service life.

The utility model discloses a kind of temperature control fan circuits, belong to risk control field, comprising: first voltage division branch, for generating fixed voltage division;Second voltage division branch, for generating temperature voltage division that changes with temperature;Difference amplification circuit, for obtaining difference voltage according to fixed voltage division and temperature voltage division;Error amplifier circuit, for obtaining error voltage according to difference voltage and fan voltage feedback signal;Drive amplification circuit, for obtaining drive signal according to error voltage;Regulating tube circuit, for adjusting fan supply voltage according to drive signal;Feedback voltage division branch, for sampling fan supply voltage and generating fan voltage feedback signal.The utility model realizes temperature-speed linear adjustable, closed loop steady speed, low noise, low power consumption, high reliability fan control.

The application relates to the technical field of DCS control systems, in particular to an analog quantity input system with input current limiting protection, which comprises at least one channel circuit for connecting and providing acquisition current for an external AI instrument and a sampling control circuit connected with each channel circuit; wherein the sampling control circuit is used for acquiring the voltage value of any channel circuit and controlling the switch of the channel circuit according to the acquired voltage value. The analog quantity input system with input current limiting protection can prevent the overheat damage of MOS tubes in the channel circuit, keep the channel circuit from generating less heat when overcurrent occurs and improve the reliability, compared with the prior art.

This utility model relates to a zero-resistance moving spring, comprising a main connection end and a moving spring assembly fixed to the main connection end at one end. The moving spring assembly includes several moving springs stacked vertically. Each moving spring includes a fixing part for fixing to the main connection end and an elastic main body extending from the fixing part to the other end. The moving spring assembly has a contact part at the end away from the fixing part for selectively making electrical contact with or disengaging from a second main connection end. The fixing parts of the stacked moving springs each have a head end, which are offset from front to back. There is a gap between the upper and lower fixing parts. The zero-resistance moving spring has solidified solder extending from the head end of the fixing part into the gap. In this way, after the coated solder melts, it flows into the gap and solidifies, making the contact resistance between the main connection end and the fixing part of the moving spring close to zero resistance after welding. The resistance is stable, ensuring reduced relay heating and facilitating automated production.

The application belongs to the technical field of soft magnetic material preparation, and particularly relates to a ferrosilicon magnetic material and a preparation method and application thereof. The preparation method comprises the following steps: (1) mixing ferrosilicon magnetic powder and a passivation agent, and then performing primary heat treatment and cooling to room temperature at a speed of not higher than 30 DEG C / h; (2) mixing the magnetic powder obtained in the step (1) with the passivation agent to obtain passivated magnetic powder; (3) adding a first coating agent to the passivated magnetic powder to perform primary coating, and then performing secondary heat treatment; and (4) adding a second coating agent to the magnetic powder obtained in the step (3) to perform secondary coating, pressing, and then performing tertiary heat treatment. The average particle size of the first coating agent is 300 nm-1 mu m; and the second coating agent comprises colloidal particles, and the average particle size of the colloidal particles is not higher than 100 nm. The preparation method can improve the density and effective magnetic permeability of the ferrosilicon magnetic material, so that the ferrosilicon magnetic material has excellent magnetic performance, the loss is greatly reduced, heat generation is reduced, and the device is beneficial to energy saving and high efficiency.

This application provides a highly integrated hydraulic power unit and its working method, relating to the field of hydraulic system technology. The unit includes a housing, a hydraulic pump, and a motor. The housing has an oil storage chamber, and the hydraulic pump is connected to the oil storage chamber and pumps hydraulic oil under the drive of the motor. The built-in oil storage chamber allows the oil supply process to occur entirely within the housing, eliminating the need for an external oil supply system, effectively reducing the overall size of the pump, and avoiding exposed oil supply lines. This application features multiple return oil channels around the motor, utilizing the hydraulic oil circulation process to cool the motor, enabling the installation of a high-power motor to increase power density. Furthermore, by implementing pressure-holding and shock-prevention measures, this application ensures that the pressure inside the oil tank remains positive, preventing instantaneous high-pressure shocks to the hydraulic pump. This allows the motor pump to continue pumping oil normally under harsh conditions, adapting to the shaking and swaying of mobile equipment during operation, and meeting the requirements for stable operation under adverse conditions.

The utility model relates to the technical field of squirrel-cage rotors, and discloses a high-torque double-squirrel-cage rotor structure, which comprises a rotating shaft and a rotor iron core arranged on the rotating shaft, a lower cage assembly is arranged on the rotor iron core, and an upper cage assembly is arranged on the outer side of the lower cage assembly; the lower cage assembly comprises two lower end rings and a plurality of lower cage conducting bars mounted on the rotor core, the plurality of lower cage conducting bars are located between the two lower end rings, and the end parts of the lower cage conducting bars are connected with the surfaces of the lower end rings; the upper cage assembly comprises two upper end rings and a plurality of upper cage conducting bars installed on the rotor core, the plurality of upper cage conducting bars are located between the two upper end rings, and the end portions of the upper cage conducting bars are connected with the surfaces of the upper end rings. According to the high-torque double-squirrel-cage rotor structure, the lower cage assembly and the upper cage assembly are arranged, and the conductivity of the lower cage assembly and the conductivity of the upper cage assembly are combined, so that the loss and heating of the motor are reduced, and meanwhile, a torque curve is stable and accords with actual working conditions.

This application discloses a playback adjustment method, device, storage medium, and program product. The method includes: acquiring playback parameters of the device, including the low-frequency energy of the audio signal played by the device, the playback volume, and the device temperature; the device includes at least two playback units; when the playback parameters meet the adjustment conditions, adjusting at least one of the power distribution and low-frequency energy of the at least two playback units; during the adjustment process, dynamically adjusting the degree of low-frequency energy suppression and the power distribution ratio based on the device temperature.

The application discloses an emergency power supply box with open-break power distribution terminals, and belongs to the technical field of emergency power supply boxes. The power supply box comprises four interval-parallel arranged power connection copper bar assemblies, which are divided into two groups and are respectively used for connecting zero lines and live lines of power supply cables and emergency cables; one grounding copper bar assembly is used for grounding connection with the power supply cables, the emergency cables and the power distribution terminals; a plurality of power distribution terminals are in sliding connection with the power connection copper bar assemblies, and are controlled by a control assembly to be respectively electrically connected with the power connection copper bar assemblies connected with the power supply cables or the emergency cables and simultaneously electrically connected with user cables; a box body is used for containing the above components, and a cable outlet is arranged at the bottom of the box body; and an emergency power supply interface is arranged outside the box body and is electrically connected with the emergency cables. The application replaces manual operation with mechanical automatic switching, and replaces scattered parts assembly with modular integration, so that the emergency power supply is fast, safe and standardized, and is especially suitable for power emergency protection of high-rise residential areas under extreme weather such as floods and typhoons.

This utility model discloses a cell balancing system, including a balancing module and a balancing control module. The balancing module includes multiple independently configured isolated power supply units and power supply units that supply power to each isolated power supply unit. Each cell in the cell pack is equipped with an isolated power supply unit, and each isolated power supply unit is connected to a balancing control module. The balancing control module sends independent balancing control signals to each isolated power supply unit. Under the control of the balancing control module, each isolated power supply unit starts or stops charging its corresponding cell, thereby achieving capacity balancing among the cells in the cell pack. The cell pack includes multiple cells connected in series, and the cell pack forms a loop with a bidirectional inverter to achieve charging and discharging operations with the power grid through the bidirectional inverter. The cells are lithium iron phosphate batteries. This utility model can achieve efficient balancing of the cells in the cell pack, with no limit on the number of cells to be balanced, low cost, and is suitable for widespread application.

A bipolar multi-mode magnetic field generator comprises a positive polarity circuit, a negative polarity circuit and a load coil; the positive polarity circuit comprises a positive polarity charging module, a positive polarity energy feedback circuit module and n positive polarity single-stage discharge modules; the negative polarity circuit comprises a negative polarity charging module, a negative polarity energy feedback circuit module and n negative polarity single-stage discharge modules. The bipolar pulse magnetic field can be outputted through the synergistic effect of the positive and negative polarity circuits. Meanwhile, the pulse source has an energy feedback circuit structure, and the system energy saving and the coil temperature rise reduction can be realized through the commutation switch. In addition, the pulse source has a modular structure, and the various output modes can be realized through the module switch timing control, thereby greatly improving the output performance of the pulse magnetic field generator on the basis of ensuring the reliable operation. The output mode can be flexibly selected, and the bipolar triangular wave and the bipolar exponential wave output modes can be realized.

The utility model discloses a universal connecting device for preventing a lead from loosening. The universal connecting device comprises a shell main body, a universal main clamp, a top block, a fixed block, a first screw, a second screw, a lead half frame, a bottom cover, a spring and the like. A universal main clamp is mounted in the shell main body, two grooves are formed in the universal main clamp, a first limiting groove and a second limiting groove are formed in each groove, two fixing blocks are mounted through the first limiting groove, and two ejection blocks are slidably connected through the second limiting groove; a lower shell and an upper shell are installed on the front side wall and the rear side wall of the shell body correspondingly, and a spring is arranged between the top block and the fixing block. Through the above structure, the lead loosening prevention device can effectively prevent the lead from loosening, has good versatility and overcurrent capability, is suitable for connection of leads of various specifications, is convenient to install and maintain, is compact and reasonable in structure, and can prolong the service life.

This invention discloses an energy meter with a built-in high-current relay, relating to the field of energy meter technology. The energy meter includes a meter box containing a control panel and a relay. A wiring plate is embedded in the end face of the meter box. A through hole is formed in the center of the front of the wiring plate, and wire holes are formed at both ends of the front of the wiring plate. A conical protrusion is movably fitted inside the through hole, and a main rod is fixedly connected to the outer end face of the conical protrusion. This invention overcomes the shortcomings of existing technologies, achieving efficient wiring, stable conductivity, precise clamping, and quick assembly and disassembly. It solves the problems of complex wiring, poor contact, inconvenient maintenance, and low safety in traditional energy meters, and has high social value and application prospects.

The utility model belongs to the field of electrical technology, and particularly relates to a contact assembly and a circuit breaker, and the contact assembly comprises a moving contact which is provided with a moving contact, and the moving contact is located at one end of the moving contact; the static contact is provided with at least two static contact points, the at least two static contact points are sequentially arranged at one end of the static contact at intervals, and the static contact points and the movable contact points are arranged oppositely; wherein the moving contact can move towards the side close to or away from the static contact, so that the moving contact is in contact with the at least two static contacts. Contact resistance can be reduced, the heating phenomenon can be reduced, local energy accumulation can be avoided, and therefore the service life of the circuit breaker is prolonged, and the breaking capacity of the circuit breaker is improved.

This utility model relates to a stator-rotor assembly and a powder-liquid mixing device. A stator-rotor assembly includes at least one stator and at least one rotor, the rotor rotating relative to the stator to shear the material flowing through the assembly. The structure of a single stator includes a first disc with several flow holes along the circumference on its end face for material flow. The structure of a single rotor includes a second disc with several notches along the circumference on its end face for material flow; each notch is hollowed out, thus forming independent blades between adjacent notches. By configuring the stator and rotor, the shearing consistency of the stator-rotor assembly on the material can be improved, thereby increasing the dispersion efficiency; simultaneously, the small overlap area between the stator and rotor reduces the heat generation of the stator-rotor assembly.

This utility model discloses a multi-pulse surge protection circuit and a multi-pulse surge protector. Through double ferrite shielding with a ferrite reinforcement layer and a ferrite shielding layer, the absorption efficiency of electromagnetic field leakage from lightning current can be enhanced. The ferrite shielding layer is directly grounded through the shell of the multi-pulse surge protector, forming a shielding effect on the inside of the surge protector, absorbing the remaining leakage electromagnetic field, and minimizing the heating of the shielding layer. This solves the technical problem that existing surge pulsers only use a single shielding layer, which leads to the majority of electromagnetic energy generating eddy current loss and hysteresis loss in the shielding layer, generating a large amount of heat and requiring external heat dissipation equipment to assist in heat dissipation.

This application discloses an energy-saving control system and an excavator hydraulic control device, relating to the field of hydraulic control technology. The energy-saving control system includes an energy-saving motor, a differential regeneration valve, an energy-saving circuit, and / or a first directional valve. The energy-saving motor is connected to the shaft end of the hydraulic pump group of the excavator hydraulic control system. The oil outlet of the energy-saving motor is connected to the return oil channel through an unloading oil circuit. The differential regeneration valve is connected between the rodless chamber oil circuit and the rod chamber oil circuit of the boom cylinder assembly of the excavator hydraulic control system. The energy-saving circuit is connected to the rodless chamber oil circuit of the boom cylinder assembly. The energy-saving circuit is equipped with a flow extraction valve group, a take-up and release valve group, and an accumulator. The take-up and release valve group is connected to the oil inlet of the energy-saving motor. The first directional valve is connected between the oil outlet of the energy-saving motor and the output oil circuit of the hydraulic pump group of the excavator hydraulic control system. The above-mentioned energy-saving control system solves the problems of low working efficiency, large energy loss, and high temperature rise in the excavator hydraulic system.

The utility model provides a kind of voltage control circuit and dyeing lamp of stage light liquid crystal lens, it is related to driving circuit technical field, comprising: DAC voltage regulating circuit, for the first PWM signal of MCU output is handled, to adjust the voltage amplitude of the liquid crystal of driving the stage light liquid crystal lens, output first drive signal;MOS drive circuit, for the second PWM signal of MCU output is according to, generate two second drive signals of opposite phase;Drive signal amplification circuit, for the first drive signal and the second drive signal generate alternating current drive signal of driving liquid crystal according to.The utility model can realize the liquid crystal drive of output drive voltage adjustable by less PWM signal, by adjusting the amplitude of drive output, different atomization or amplification effect of liquid crystal lens can be realized, with light fixture weight reduction, reduce light fixture size, reduce heat, facilitate installation maintenance and the like advantages.

The utility model discloses a kind of anti-deformation diamond saw blades, including base, the rim of base is provided with multiple circumferential array distribution plane, the surface of each plane is provided with two symmetrically distributed insertion cavities, the surface of base is provided with the through hole of insertion cavity, the insertion cavity is inserted with the insertion plate in each, the both sides of insertion plate are located in the through hole and are provided with lug, the surface of lug is provided with wear strip.The utility model is provided with wear strip, so that the both sides wear strip of base are projected from the surface of base, reduce the friction between base and the object to be cut, avoid the phenomenon of "clamping saw", prevent the deformation caused by the wear of base side at the same time, high-quality cut surface can be obtained by using the good grinding property of superfine abrasive.

The utility model discloses a kind of multi-grade adjustment rotary switches, including base, shell cover, rotating handle and contact assembly, rotating handle rotationally arranged between base and shell cover, and drive rod extending along its radial direction is provided;Contact assembly includes the multiple elastic structure's moving contact bridge of the shaft center of rotating handle as center annularly arranged in installation cavity, and multiple static contact pieces are arranged in base and respectively opposite multiple moving contact bridges, multiple moving contact bridges are connected and respectively located on the movement path of drive rod, drive rod respectively drives multiple moving contact bridges and multiple static contact pieces contact in rotating handle rotating process, by the mechanism of the wheel contact formed by drive rod and multiple moving contact bridges, operation pressure is significantly dispersed, avoid single moving contact bridge sustained stress, greatly reduce the mechanical load and fatigue degree of moving contact bridge, reduce the probability of heating, reduce wear and risk of fusion welding, extend mechanical service life.

A gas processing system includes a vessel (102) defining a cavity (106) for processing a gas. The vessel includes a process gas inlet (108) for receiving a process gas at an input pressure and a process gas outlet (110) for discharging the process gas at an output pressure. The gas processing system also includes a shaft (122) coupled to the vessel and a stepwise sealing system (114) including a plurality of seals (136) spaced along the shaft. The shaft is configured to transfer mechanical energy to or from the gas in the vessel. Each adjacent pair of seals defines a corresponding pressure space therebetween. One of the pressure spaces is an equalization pressure space (144a) in hydraulic communication with the process gas inlet via a flow line (116) such that, in operation, a pressure in the equalization pressure space is maintained at an equalization pressure relative to a pressure in the process gas inlet.

This utility model belongs to the field of contact sheet technology, and particularly relates to a contact sheet for a switch socket, including a fixing part, with a first extension part on both the left and right sides of the fixing part. The side of the first extension part is provided with a trapezoidal groove, one end of which abuts against the fixing part, and the other end of which is connected to a trapezoidal protrusion. A second extension part extends from the other side of the first extension part, and a first angle is formed between the first extension part and the second extension part, with the first angle ranging from 80° to 82°. A trapezoidal groove and a trapezoidal protrusion are mirror-image provided on one side of the second extension part. A support part is provided at the bottom of the fixing part, and a second angle is formed between the support part and the fixing part, with the second angle ranging from 95° to 97°. A contact part extends horizontally from the end of the support part in a direction parallel to the fixing part. A silver dot is provided at each of the left and right ends of the contact part, and the silver dot is fixed to the surface of the contact part by riveting.

The invention provides a camera computing power dynamic allocation method and system based on heterogeneous computing power cutting. The method comprises the following steps: acquiring a camera task and acquiring task and environment parameters based on the camera task; determining a task real-time computing power demand and a computing power cutting coefficient based on the task and the environment parameters; determining the actual distribution computing power corresponding to each camera task based on the task real-time computing power demand and the computing power cutting coefficient; and determining a corresponding calculation unit set for each camera task based on the actual distribution calculation power, constructing an objective function based on the calculation unit sets, solving the objective function to obtain an optimal calculation unit corresponding to each camera task, and executing the camera task through the optimal calculation unit. The method can ensure that the computing power distribution of the equipment is always in an optimal state, and avoids performance reduction caused by scene fluctuation.

The application provides a battery fast charging protection method and device based on reverse current detection and electronic equipment, and belongs to the technical field of battery management. The method comprises the following steps: acquiring current direction information of a charging current flowing through an internal battery of the electronic equipment; determining that the current direction information represents a reverse current state from the battery to a charger; in response to the determination of the reverse current state, generating and outputting a discharge control signal based on parameter information of the reverse current state; controlling a power switch circuit connected to the battery to apply a controllable discharge current pulse to the battery according to the discharge control signal; and through real-time monitoring and response to the harmful reverse current generated by the battery, precise and adaptive protection intervention is realized, so that the average current of the fast charging process is optimized, and the charging efficiency is effectively improved under the premise of guaranteeing the safety and service life of the battery.