147results about How to "Reduce mechanical shock" patented technology

The invention provides a high-speed mechanical switch and a high voltage electric power system using the same. The high-speed mechanical switch includes a vacuum arc-extinguishing chamber and an electromagnetic repulsion mechanism, the electromagnetic repulsion mechanism includes a repulsion disc, an opening coil, a closing coil and a secondary discharge circuit connected with the opening coil, a moving contact of the vacuum arc-extinguishing chamber is directly fixedly connected with the repulsion disc, and the repulsion disc is located between the opening coil and the closing coil and can move vertically under the function of electromagnetic repulsion. An insulating pull rod between the vacuum arc-extinguishing chamber and the electromagnetic repulsion mechanism is cancelled, the mass of moving components is reduced, opening and closing speed is improved, opening and closing time is shortened, and mechanical shock during opening and closing action is reduced.

The present invention provides a method for actuating a brushless double-feed electric motor and the device thereof. The actuating method comprises the following procedures: executing self-checking to the transducer and controller before the actuation of the brushless double-feed electric motor; controlling a winding series resistance by the brushless double-feed electric motor, energizing a power winding for asynchronous actuating; taking the asynchronous steady speed at this time as a synchronous steady speed of double-feed operation, leading to that the transducer outputs the corresponding frequency, disconnecting the control winding from the staring resistance, switching to the transducer for electric supply, and changing the operation mode of the electric motor from asynchronous mode to double-feed operation mode at this time; and adjusting the output frequency of the transducer by the controller according rotating speed and the datum speed of the electric motor until the requirement of rotating speed of the electric motor is satisfied. The control device is composed of a power winding, a control winding, a stator of the brushless double-feed electric motor and a rotor of the brushless double-feed electric motor. The device of the invention has the advantages of small current impact, small electrical torque and oscillation amplitude of the rotating speed, less number, small mechanical impact, excellent protection to the electric motor, reduction of impact to the electric network, and effective reduction to the actuating capacity of the transducer of the control winding.

The invention discloses a wind-driven magnetic suspension flywheel assisted power generation system. A magnetic suspension flywheel rotating body is adopted, upwind yaw and mechanical shock stabilization are implemented, a portion exceeding the rated power of a power generator is consumed and used, and accordingly, the utilization rate of wind energy is increased in an all-round way; three modes including flywheel-driven yaw power generation, flywheel energy storage wind power generation and shutdown are realized. When the wind direction changes, a flywheel suspension winding is powered on, the flywheel rotating body suspends a cabin to a yaw height, and a flywheel yaw winding generates electromagnetic torque to drive the cabin to yaw against wind; after yawing, the flywheel rotating bodysuspends to drop to an energy storage height to stabilize mechanical shock of the power generator; when the rated wind speed is surpassed, the flywheel rotating body efficiently converts the portion exceeding the rated power of the power generator; when the maximum conversion power of a flywheel is surpassed, the flywheel rotating body suspends to drive the cabin upwind, and accordingly, the constant power output of the power generator is ensured. The wind-driven magnetic suspension flywheel assisted power generation system has the advantages that the utilization ratio of the wind energy is increased greatly, and the yawing power consumption and equipment maintenance costs are reduced.

The invention discloses a motor direct-driven transmission device of a door lock and an intelligent door lock. The motor direct-driven transmission device mainly comprises an inner door panel, a bottom plate, a lock core, a shifting strip and components like an unlocking rotary knob, a driving bevel gear, a gear motor, a motor bevel gear, an optoelectronic switch, an optical grating coding disc, a buffer cushion and a locking cover. According to the motor direct-driven transmission device, the lock core is driven to rotate through the gear motor, automatic locking and unlocking functions of an electronic door lock are achieved through utilizing a traditional mechanical lock body, and the motor direct-driven transmission device has the advantages that the changing and mounting are easy, the cost is low, the operation is stable, reliable, safe and convenient, the device is abrasion resistant, the noise is low, and the service life is long, integrates convenience of an intelligent lock and safety and reliability of a mechanical lock, and has wide application prospect in the field of intelligent door locks.

The invention relates to a hybrid power automobile work mode control method, which comprises the following steps that the position of an accelerator pedal corresponds to a certain automobile speed, and a corresponding relationship between the pedal position and the automobile speed is obtained; an automobile speed change rate from the current automobile speed to a target automobile speed is calculated, and the automobile speed control increment is calculated according to the automobile speed change rate; in the hybrid power automobile work mode switching process, an engine accelerator changes according to the set change rate, and a speed regulation command of a motor is determined according to the motor rotating speed control increment. The hybrid power automobile work mode control method has the advantages that the output torque of an engine does not need to be precisely estimated, the running stability of vehicles, particularly the running stability in the mode switching process can be maintained all the time, the mechanical impact is reduced, and the driving comfort and the robustness in the mode switching control process are improved.

The invention provides an escalator integration frequency conversion controller based on bypass frequency conversion technique, in which an escalator controller and a frequency converter are integrated. The integration frequency conversion controller includes a motor drive circuit, a power supply circuit and a control circuit, wherein the control circuit receives signal from peripheral equipment of the frequency conversion controller and sends treated signal to the motor drive circuit, the motor drive circuit separately receives power supply signals from an industrial power supply and a frequency converser output power supply and sends signal to outside to control an escalator towing machine. The invention divides operation process of the escalator into two portions of starting standby and running with operation frequency, when accelerating, decelerating or standby, the escalator is driven by the frequency converser power supply, and when running stably, the escalator is driven by the industrial power supply. Advantages of the invention are: compact structure, convenient installation and debugging, highly efficient running, stable and safe.

The invention discloses an electric hydraulic proportion twin rudder following and synchronous operation control system, which comprises an autopilot control system, a left rudder machine power / signal control box, a left rudder machine control box, a left rudder machine system, a left rudder angle signal feedback device as well as a right rudder machine power / signal control box, a right rudder machine control box, a right rudder machine system and a right rudder angle signal feedback device. The left rudder machine system and the right rudder machine system adopt a hydraulic rudder machine control system which uses a variable hydraulic pump and a proportional electromagnetic valve as a control core. In the left rudder machine system and the right rudder machine system, two hydraulic pumps drive two sets of oscillating oil cylinders to drive a tiller; the autopilot control system is a self-adaptive autopilot control system. The control system has the advantages that as the proportional valve and a variable pump are adopted for control, the mechanical shock of the device is reduced so as to be convenient for maintenance; since the use of the proportional valve and steering signals are continuously variable, the continuously stable startup and stop of the whole system are realized to effectively reduce the mechanical shock, thus not only protecting the mechanical system of the rudder machine, but also being beneficial to reducing the mechanical shock of the tail structure; furthermore, the use of the variable hydraulic pump and the proportional valve meets the requirements of various single-control indexes and the synchronous operation for steering the twin rudders.

The invention discloses a high-precision valve control method. The method comprises the following steps of 1, setting system parameters; 2, judging a current valve location value of a valve; 3, according to a target valve location value, calculating a motion stroke at this time; 4, judging the motion stroke at this time; 5, planning a speed curve, wherein according to the motion stroke at this time, the speed curve is planned, and is divided into an acceleration phase, a uniform speed phage and a deceleration phase; 6, controlling the rotational speed according to the speed curve planed in step 5. By means of the high-precision valve control method, the motion control precision of an executor is improved, the running speed can be flexibly adjusted, mechanical shock brought in running is lowered, the material wearing condition of a transmission structure is improved, and the service life of products is prolonged.

The invention provides a self-lubricating modular metal roller electric locomotive pantograph head with a damping structure. Pure carbon sliding plates are arranged on the two upper end surfaces of aU-shaped insulating base, and more than one group of metal rollers are arranged on the horizontal bottom plate of the base; the setting mode of each group of metal rollers is as follows: the lower parts of every two T-shaped insulating supports extend into grooves of a horizontal bottom plate respectively, and are arranged on fixing bolts which are screwed into the outer side of the horizontal bottom plate through holes in the horizontal bottom plate, spring damping mechanisms are symmetrically arranged on the left side and the right side of each insulating support, and the two metal rollers are arranged between the two supports through fixing shafts; and the structure of the metal rollers are is characterized in that the metal cylinders sleeve the metal shafts through insulating bearings,annular current-receiving electric brushes are fixed on the metal shafts, and the outer surfaces of the annular current-receiving electric brushes are in contact with the inner walls of the metal rollers. The self-lubricating modular metal roller electric locomotive pantograph head has the self-lubricating effect, is in flexible contact with an arch net and forms rolling friction fit, and has thecharacteristics of being capable of adapting to requirements of traction power of a train, being longer in service life and the like.

The invention provides a self-closed type electromagnetic coupling speed-regulating wind generator set and a control method thereof. The self-closed type electromagnetic coupling speed-regulating wind generator set solves the problem that current double-fed type and full-power conversion type wind generator sets are different in gird-connected interfaces compared with a synchronous generator set in a conventional power plant. According to the self-closed type electromagnetic coupling speed-regulating wind generator set provided by the invention, a self-closed type electromagnetic coupling speed-regulating device is connected to the high-speed shaft of a gear case and the rotor shaft of an electro-magnetic synchronous generator, so that power is transmitted to the side of the electro-magnetic synchronous generator from the side of the gear case, and the gird-connected interface is the electro-magnetic synchronous generator. According to the self-closed type electromagnetic coupling speed-regulating wind generator set and the control method thereof provided by the invention, the pollution of the wind generator set possibly caused to a power grid due to the fact that a frequency converter is connected with the power grid is avoided, the unification of the grid-connected interfaces in the wind generator set and the conventional power plant is realized, a power grid environmentally-friendly target of the wind generator set is really realized, and the promotion of further development of the clean energy, namely wind power, is facilitated.

The invention provides an energy-saving automatic control device of a cloth-bag dust removal system and a control method for blast furnace dust removal. The energy-saving automatic control device comprises an input unit, a variable frequency drive unit, an execution unit and a PLC (programmable logic controller) control unit, wherein the input unit is composed of a fast acting fuse, a contactor and an electric reactor; the variable frequency drive unit consists of a rectification module and a capacitor, together with a braking unit, an inverter, a CPU (central processing unit) with a vector control function and a 220V power supply; the execution unit is composed of an electric reactor, a throttle rotary actuator and a throttle control device; the PLC control unit is composed of a PLC and an auxiliary circuit; the primary side of the rectification module of the variable frequency drive unit is connected with an output end of the electric reactor of the input unit and the secondary side of the rectification module is connected with the electric reactor of the execution unit through the capacitor and the inverter; the rectification module and the inverter are connected with the CPU through a bus, the CPU and the PLC are connected in a communication manner through a switching value and an analog quantity, and a throttle control end of the PLC unit is connected with the execution unit. Meanwhile, the device is used for controlling the blast furnace dust removal. By adopting the energy-saving automatic control device and the control method provided by the invention, the fan utilization can be improved, the accuracy control on the dust removal can be realized, the electric energy can be saved, heat productivity of the device can be reduced, the dust recovery rate can be improved, the cloth-bag damage rate can be reduced, and exhaust gas and dust emissions can be decreased.

The invention relates to an automatic winding assembly which comprises a winding mechanism, a motor, a first control mechanism and a second control mechanism. The motor is used for driving the windingmechanism to rotate; the first control mechanism is used for controlling the motor to rotate forwards; and the second control mechanism is used for controlling the motor to rotate reversely. Througharranging the first control mechanism and the second control mechanism, different rotation directions of the automatic winding assembly are controlled, so that a function on tightening a thread rope or loosening the thread rope is realized; in addition, through arranging a first on-off mechanism in the first control mechanism and a second on-off mechanism in the second control mechanism, the automatic winding assembly automatically stops rotating when rotating to a limiting position, so that an effect on limiting rotation limitation is achieved, the mechanical shock is small compared with theprior art, and the service life of the whole product is prolonged; and in addition, the automatic winding assembly provided by the invention is low in cost and good in user experience on the premise of realizing the functions of limiting rotation limitation and self-adaptive tightening.

Disclosed is a double-row multi-roller type modular current-receiving device for an electric locomotive. According to the double-row multi-roller type modular current-receiving device for the electriclocomotive, two rows of metal rollers are annularly arranged on an insulating base; each rolling wheel is arranged in the manner that two insulating stand columns are fixed to the insulating base, compression springs sleeve the two insulating stand columns correspondingly, insulating blocks sleeve the insulating stand columns and are located above the compression springs, metal shells of the rollers are installed on metal shafts through two insulating bearings, the metal shafts are fixed to the two insulating blocks, the outer surface of an annular current receiving electric brush makes contact with the roller metal shells to receive current, the inner surface of the annular current receiving electric brush is fixed to the metal shafts, all the metal shafts are connected through cables and are then used for supplying power to vehicle-mounted power consuming equipment, and two pure carbon sliding plates are fixed to the insulating base through more than four springs. The friction forceand the friction noise of the current-receiving device and a rigid contact rail can be effectively reduced, and the double-row multi-roller type modular current-receiving device can adapt to the changes of locomotive traction power requirements and has good buffering performance, heat dissipation performance and rail attaching performance.

The invention discloses a trace dynamic tracking implementation method. The method includes the step of work piece modeling and calibration and coordinate calculation of a robot tracking process, andthe work piece modeling and calibration includes work piece reference coordinate system establishment and calibration, and technology point teaching. The method studies the relevant technologies of different technology points on dynamic tracking work pieces, and the method of the work piece reference coordinate system establishment and calibration and the technology point teaching is designed. Themethod includes that start of tracking, keep of tracking, and end of tracking are carried out, and an interpolation point coordinate calculation method in all processes is achieved; robot tracking lagging quantity is analyzed and a lagging time compensation mode is proposed; and finally, a trace optimization method based on velocity compensation is proposed to ease mechanical shock when a robot starts to track and gives up tracking.

The present invention relates to a method and apparatus for an isolating structure. Embodiments of the present invention provide a robust packaging process and a mechanical filter to reduce the mechanical shock from impact. The mechanical filter can be integrated within the package substrate as part of the packaging process, reducing the assembly complexity.

The invention provides a barrel lid slow descending device which comprises a mechanical control portion and an electrical control portion. The mechanical control portion comprises a speed reduction box, a barrel lid rotationally connected with the speed reduction box, and a torsional spring installed between the speed reduction box and the barrel lid. The barrel lid is provided with a rotating corner connector, and the rotating corner connector comprises a rotating end rotationally connected with the speed reduction box and a corner connector end fixedly connected with the barrel lid; the torsional spring is provided with a first torsional arm and a second torsional arm, the rotating center of the torsional spring is coaxially with a transmission output shaft of the speed reduction box, the first torsional arm is limited by the speed reduction box, and the second torsional arm is limited by the barrel lid; the electric control portion comprises a motor in transmission connection with the barrel lid and a main control device for controlling the motor to rotate forwards and reversely and achieve brake. The invention further provides an intelligent garbage can provided with the barrellid slow descending device and a control method thereof. The mechanical control and the electrical control over opening or closing are perfectly combined, rapid opening of the barrel lid can be achieved, the size of a mechanical portion can be lowered, the circuit structure can be simplified, and the cost is lowered remarkably.

The invention relates to an electric variable pitch control system. The system is provided with a fan controller, a variable pitch controller, a blade drive controller, a blade and a nut, wherein the variable pitch controller is used for receiving a blade angle signal and a blade speed signal which are transmitted by the fan controller and combining the signals into a single speed signal; the nutis positioned on the blade; a pressure sensor for acquiring a pressure signal is arranged on the nut; and the blade drive controller is used for controlling the blade to change pitch through the blade speed signal which is combined by the single speed signal and the pressure signal. By the electric variable pitch control system, the stability and the reliability of a unit electric signal are enhanced, and the service life of a unit standby power supply is prolonged.

The invention provides a solution to starting shaking and electrical brake noise of a battery electric vehicle. The solution comprises the steps of defining an accelerator preset moment, a motor feedback moment, a rising moment step size, a declining moment step size and a steady state moment step size; marking motor moment adjusting states as a rising moment step size adjusting state, a declining moment step size adjusting state and a balance moment step size adjusting state and corresponding vehicle operation states; separately setting moment step size adjusting strategies under different moment step size adjusting states to realize the gradual adjustment of the motor moment under the different states. The solution enables a force adding process and a force removing process of a motor to be stable and smooth and can reduce the mechanical impact of the motor, effectively restrain the starting shaking of a vehicle and eliminate or reduce electrical brake noise in an electrical feedback process.

The invention relates to a control method and a control apparatus for a magnetic force operating mechanism. Electromagnetic coils arranged in parallel magnetic field gaps are electrified, so that the electromagnetic coils can move in the parallel magnetic field gaps due to force in a reciprocating manner so as to drive a corresponding movable contact to perform switch-on and switch-off actions; in a switch-on process, a switch-on buffer current which is opposite to the direction of a switch-on current is transmitted to the electromagnetic coils according to set time; and in a switch-off process, a switch-off buffer current which is opposite to the direction of a switch-off current is transmitted to the electromagnetic coils according to set time. The switch-on buffer current and the switch-off buffer current can suffer from opposite force in the up stroke of the electromagnetic coils to perform stroke electromagnetic buffering, so that the movement speed of the electromagnetic coils is effectively lowered, mechanical impact to other parts can be lowered, and switch-off and switch-on jumping and rebound can be weakened.

The invention provides a torque sensor and detecting system for an electric bicycle. The torque sensor comprises a center shaft, a strain sleeve and a transmission sleeve, wherein the strain sleeve and the transmission sleeve are arranged on the center shaft in a sleeving mode. At least two rows of strain detecting portions arranged at intervals are integrally formed on the strain sleeve in the axial direction. The torque sensor further comprises an induction coil arranged on the periphery of the strain detecting portions, and a signal processor connected with the induction coil. The detecting system comprises the torque sensor, a magnetic ring fixed on the center shaft or the strain sleeve or the transmission sleeve, and a Hall sensor used for detecting the rotating speed of the magnetic ring. The transmission sleeve can reduce the impact of external stress on the strain sleeve, reduce abnormal signal output and avoid damage to the strain sleeve. The strain detecting portions are integrally formed on the strain sleeve, so that the accuracy, stability and reliability of torque detection are improved, the preparation process difficulty of the strain sleeve is lowered, and application and popularization prospects in the industry are good.

The invention discloses a speed regulator for an emulsion pump station on a coal face. The speed regulator comprises a speed sensor for acquiring the actual rotating speed of an emulsion pump, a pressure sensor for acquiring the output pressure of the emulsion pump, a controller for receiving signals from the speed sensor and the pressure sensor, comparing the signals with a set pressure value in the controller and outputting a speed regulation control signal, and a permanent magnet speed regulator which changes the size of the air gap of the permanent speed regulator according to the speed regulation control signal provided by the controller so as to regulate the rotating speed of the emulsion pump and further regulate the liquid supply pressure of a liquid supply pump station.

The invention discloses an automatic oscillation mixing device for sample pretreatment, and belongs to the technical field of experimental instruments. The device comprises a rack, a voice coil motor,a sliding seat, a position measurement sensor, a rocker, a sample tube clamp mechanism and a controller, wherein the voice coil motor is fixed on the rack; the voice coil motor is vertically connected with the sliding seat; the position measurement sensor is arranged on the sliding seat, the rocker is pivoted on the rack, the sliding seat is rotatably connected with the head end of the rocker, ashort arm is arranged from the head end of the rocker to the pivoted part, a sliding gap parallel to the short arm is reserved at the rotary joint, the sample tube clamp mechanism is fixed at the tailend of the rocker, and a long arm is arranged from the tail end of the rocker to the pivoted part; and the controller is connected with the voice coil motor and the position measurement sensor. The scheme has the characteristics of artificial oscillation simulation and dynamic adjustment, can realize electronic buffering, reduces mechanical impact at the tail end of a reciprocating motion stroke,improves an up-down reciprocating oscillation stroke and output force, reduces noise generation, and is light in overall structure.

The invention belongs to hydraulics experimental model facilities and particularly relates to an electromagnetic lever type water channel gate device for simulating instant dam break. The device comprises a gantry type support, a gate door sheet and an electromagnetic lifting control device. A fixing plate is arranged on the gantry type support, and a guide groove matched with a vertical guide bar on the gate door sheet is fixed to the fixing plate. The electromagnetic lifting control device comprises an electromagnetic attraction disc, an electromagnet block, and a lever hinged to a hinge head fixed to a gantry cross beam. The two ends of the lever are connected with the gate door sheet and the electromagnetic attraction disc through steel cables respectively, and through the attraction effect of the electromagnet block on the electromagnetic attraction disc, instant opening and closing of the gate door sheet are achieved through the lever. Opening and resetting can be automatically achieved, the device is suitable for water channels of multiple sizes, mechanical oscillation generated in the opening process of a gate is greatly relieved, time and labor are saved, electromagnetic control is more efficient and convenient and rapid, and errors can be effectively reduced.

The invention provides a low-voltage ride-through control method for a self-sealing type electromagnetic coupling speed-regulating wind generation set, aiming at solving the problem that current double-feedback type and full-power conversion type wind generation sets and a synchronous power generator in a conventional power plant have different gird-connected interfaces. The invention provides the low-voltage ride-through control method for the self-sealing type electromagnetic coupling speed-regulating wind generation set. A self-sealing type electromagnetic coupling speed-regulating device is jointed with a gearbox high-speed shaft and an electrical excitation synchronous power generator rotor shaft and power is transmitted to the side of an electrical excitation synchronous power generator from the side of a gearbox; and a gird-connected interface is the electrical excitation synchronous power generator. According to the self-sealing type electromagnetic coupling speed-regulating wind generation set and the control method thereof, pollution to a power grid, which is possibly caused by the connection of a frequency converter and the power grid, is avoided, and the gird-connected interfaces of the wind generation set and the conventional power plant are the same; and a power grid friendly type target of the wind generation set is really realized and further development of wind power, namely a clean energy source, is facilitated.

The invention relates to a preparation method of diamond with an optical antireflection film, and particularly provides a self-supporting diamond material with an antireflection film and a preparationmethod thereof. The material can be used for windows of devices such as optical communication and sensors, and belongs to the field of optical material preparation and processing. The preparation method of the diamond with the optical antireflection film comprises the following steps of firstly, depositing the antireflection film on a polished original substrate; then preparing the diamond on thesurface of the antireflection film through chemical vapor deposition (CVD); carrying out grinding, polishing and laser scribing and cutting treatment on the surface of the prepared diamond; etching the surface of the processed diamond by adopting low-temperature plasma to remove a residual graphite phase on the surface; and removing the original substrate by adopting a chemical solution corrosionor ion selective etching mode, and reserving the diamond material with the antireflection film. The method is particularly suitable for meeting the application requirements of the fields of optical communication, micro sensors and the like on the micro diamond window material with the antireflection film.

The invention relates to a controllable soft start electric drum, comprising a drum body, a left bearing pedestal, a right bearing pedestal and a brake arranged on the left bearing pedestal; the brake is provided with a dynamical friction plate, a static friction plate and an air sac; the air sac controls the contact pressure between the dynamical friction plate and the static friction plate through air inflation and air exhaust; a left flange and a right flange shaft are arranged in the drum body, an output gear ring is arranged between the left flange and the right flange shaft; a brake shaft is fixed at the center of the left flange, and the dynamical friction plate is fixed on the brake shaft; and the output gear ring is fixedly connected with the drum body. The invention has large power, simple structure, small volume, light weight, high efficiency and obvious effect, and can be widely applied to large-scale belt conveyor of ports, mines, metallurgy, electric power and other industries.

The invention discloses a transmission device with a stepless speed regulating function. The transmission device is characterized by comprising a roller, a power input shaft and a roller end shaft, wherein the outer end of the power input shaft is located on one side of the roller, the inner end of the power input shaft stretches into an inner cavity of the roller until being close to the other side of the roller, the power input shaft is arranged on a roller first end cover through an end cover bearing and a seal ring, the roller first end cover is fixed to one side of the roller, the roller end shaft is fixed to the other side of the roller through a roller second end cover, and the roller end shaft and the roller second end cover are of an integrated structure or a rigid seal connection structure; an adhesive speed regulating clutch is arranged between the inner end of the power input shaft and the inner roller wall of the roller. According to the transmission device, the adhesive speed regulating clutch and the roller are scientifically and reasonably integrated, the structure is more compact, the effect of a common roller is achieved, and the functions of belt conveyor slow starting and stepless speed regulating are achieved.