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 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.

A fastening arrangement for a gas tank (1) of a motor vehicle comprises: at least one gas tank for storing gaseous fuel; a valve, which is arranged on a section of the gas tank (1) which is provided with an opening, for filling and emptying the gas tank with gaseous fuel, which valve comprises a valve body (7) having control elements for controlling the valve function and connecting pieces for connecting to gaseous fuel lines; and a protective element, which is arranged on that side of the valve body (7) which faces away from the gas tank and at least partially covers the valve body (7), for protecting the valve body (7) from a mechanical introduction of force; a bracket for fastening the gas tank (1) to the vehicle and comprising a vehicle fastening section which is fastened on the vehicle and a tank fastening section which is fastened on the gas tank, wherein the support element serves as a tank fastening section for fastening the gas tank to the vehicle.

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.

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 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 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 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.