73results about How to "To achieve the purpose of speed regulation" patented technology

The invention relates to a speed-adjusting-type permanent-magnet drive system, comprising a conductor rotor (a first rotor), a magnetic rotor (a second rotor) component and a lead screw regulator, wherein the conductor rotor (the first rotor) is arranged on an input shaft; the magnetic rotor (the second rotor) is arranged on an output shaft; the conductor rotor comprises a disk-shaped steel frame and a copper conducting ring; the surface of a steel plate is provided with the copper conducting ring; the opposite surfaces of a permanent-magnet rotor and the conductor rotor are embedded with permanent magnets; the gap of the opposite surfaces of the conductor rotor and the permanent-magnet rotor can adjust an axial air clearance; and the conductor rotor and the permanent-magnet rotor are coupled by the magnetic force. When the conductor rotor rotates, the permanent-magnet rotor also rotates along the same direction with the conductor rotor due to the coupling action of the magnetic force; the conductor rotor (the first rotor) is fixedly connected with the input shaft; the permanent-magnet rotor (the second rotor) is connected with the output shaft by a shaft section; the regulator is arranged on the shaft section; and the air clearance between the disk surfaces of the two rotors can be adjusted by the regulator, thus changing the torque and the rotating speed and achieving the purpose of speed adjustment.

The invention discloses an agricultural aviation self-adaption centrifugal atomization control system. The agricultural aviation self-adaption centrifugal atomization control system is used on an aviation operating centrifugal atomization nozzle, the rotation speed of a centrifugal atomization rotary disc can be adjusted according to the operating height of an unmanned aerial vehicle, and the size of fog drops changes along with changes of the operating height of the unmanned aerial vehicle, so that the aviation pesticide delivery operation achieves both the operating effect and environmental protection, and the purposes of improving the operating effect and reducing environmental pollution are achieved. In order to achieve the purposes, a motor, the nozzle and the centrifugal atomization rotary disc are used, an embedded type control system composed of a single-chip microcomputer and a peripheral circuit is designed, and the rotation speed of the atomization rotary disc is adjusted according to the current flight height of the unmanned aerial vehicle so as to change the size of fog drops.

The invention discloses a displacement chromatography hydrogen isotope separation device which comprises a rack as well as a cooling part, a separation column, an air supply part, an air collection part, a lifting part and a driving part. By adopting the displacement chromatography hydrogen isotope separation device disclosed by the invention, different adsorption functions that hydrogen and hydrogen isotope are replaced and separated by using a separation material can be achieved, the lifting part is driven by the driving part to precisely control the lifting position of the separation column, and then the separation column can be descended or lifted off the cooling part, so that adsorption or desorption of hydrogen isotope by the separation material under different temperature conditions can be achieved, a high retention rate of deuterium-tritium isotope in the separation material can be ensured, and a deuterium-tritium isotope gas obtained through final separation and selection is relatively high in purity; compared with the prior art, the device needs no parts for introducing deuterium or separating deuterium, meanwhile deuterium and tritium do not need to be replaced by introducing hydrogen after the separation material is in saturation adsorption of hydrogen, and in addition, the device is simple in structure, low in energy consumption rate, simple in process and low in cost.

A zoom lens comprises, orderly from the object side to the image side, a first lens group G1 having the positive focal power, a second lens group G2 having the negative focal power, a third lens group G3 having the positive focal power, a fourth lens group G4 having the positive focal power, a fifth lens group G5 having the positive focal power. The first, third and fifth lens groups are fixed groups, the second negative lens group is a zoom group, and the fourth positive lens group is a focusing group. An aperture diaphragm STP having a specified and given caliber is configured between the second lens group G2 and the third lens group G3, a first light filter ICF and a second light filter LPF are configured between the fifth lens group G5 and an imaging surface IMG, and a light reception surface of a solid shooting element is configured on the imaging surface IMG. By moving a second lens, the zoom from a wide angle end to a telescopic end is realized, and by moving the fourth lens group along an optical axis, the correction and focusing of the image surface variation along with the zoom are carried out.

The invention relates to a continuously variable transmission system for flow distribution transmission of a permanent magnetic speed-regulating planet gear. The continuously variable transmission system is specifically composed of a main driving part composed of two combined planet gear rows, a planet row for controlling transmission, a permanent magnetic transmission mechanism and a mechanism for regulating the magnitude of a permanent magnetic transmission torque. The continuously variable transmission system is particularly suitable for regeneration braking systems of automobiles and urban railway vehicles and is structurally characterized by controlling a sun gear 7 of the planet row 26 to feed the torque back to an inner gear ring 15 of a rear planet row through a main driving element 10 and an auxiliary driving element 11 of a permanent magnetic transmission device under slip frequency.

The invention discloses an overflow type intelligent air distribution control system, which is used for intelligently managing ventilation of an underground mine. A bifurcate door and a motor for controlling the opening and closing of the bifurcate door are arranged at an air inlet cylinder in a ventilating system; at least one gas sensor and at least one differential pressure sensor are arranged in a tunnel; and a computer control system is respectively in circuit connection with the motor, a gas sensor and a differential pressure sensor and controls the motor to adjust the opening and closing sizes of the bifurcate door according to data received from the gas sensor and the differential pressure sensor, so that the air inlet quantity is controlled, and the accumulated gas can be slowly and safety exhausted. By the overflow type intelligent air distribution control system, the air inlet quantity of the air cylinder is accurately controlled in real time according to the on-site gas concentration, and intelligent control is guaranteed, so that the gas is safely and reliably exhausted, and the safety of a mine is guaranteed.

The invention relates to a permanent magnet flexible locking and controlling continuously variable transmission system. The system comprises a main transmission part which is assembled by two combined planetary gear rows, a planet gear serving as control drive, a planet gear serving as speed rising, permanent magnet flexible locking mechanisms, a permanent magnet transmission mechanism and a mechanism for adjusting the size of the permanent magnet drive torque. The system is suitable to a transmission of a car particularly. The system is characterized in that torque is fed back to a rear planet gear inner gear ring 14 from a drive element 7 and a driven element 8 through a permanent magnet transmission device by a sun gear 28 of a control planet gear 33, the torque is transmitted under the slip, and a speed rising planet gear inner gear ring 21 is locked by permanent magnet flexible locking mechanism 11, 12.

The invention belongs to the filed of wind energy, and in particular relates to a wind turbine with an air cylinder capable of pushing a tail rudder automatically. The wind turbine is characterized in that the rear end of a driven machine is connected with a bracket (9); the tail rudder (7) is connected to the bracket by a rotary shaft (7); the tail rudder can rotate round the rotary shaft (6); the tail rudder (7) is provided with an actuating arm (5) which is axially connected with a power lever of the air cylinder (4); a tension spring (8) is hanged between the actuating arm (5) and the bracket (9); within a rated wind speed, a blade (1) and the tail rudder (7) rotate vertically; when the wind speed exceeds the rated wind speed, the air pressure in a device increases, the air cylinder (4) overcomes the tension of the spring (8) to start to work, the tail rudder (7) is pushed surrounding the rotary shaft (6) to move from the original position A1 to A2; the wind surface of the blade (1) and the angle of wind direction change, and the aim of speed regulation is achieved; and when the wind speed exceeds the speed regulation range, the air cylinder (4) works with a full rate, the tail rudder (7) is pushed to reach the rated angle, thus the wind surface of the blade (1) is parallel with the wind direction, and the vehicle stops automatically to avoid from danger.

The invention relates to three-phase asynchronous motor speed regulation controller comprised a heavy-current detection and output motor drive board and a weak-current control board and used in control system of electromechanical device with a system master control board. Wherein, the said drive board communicates with said weak-current control board that also communicates with said master control board; the drive board can detect three-phase power over zero point and output variable voltage, the control board can control dual-direction silicon controlled conductive angle. This invention can reduce motor rotation speed for low load to save power.

The invention provides an electromagnetic induction energy-saving speed regulator which has simple structure, low cost, high maintenance and long service life and can realize stepless speed regulation. The electromagnetic induction energy-saving speed regulator comprises a driving rotor part which mainly comprises a driving rotor disc, a magnetic inductive steel ring (3) and an induction copper ring (4) and a driven rotor part which essentially comprises a driven rotor disc (7), a permanent magnet (16) and a driven main shaft (11); the speed regulator is characterized in that the magnetic inductive steel ring (7) and the induction copper ring (4) are fixed at the periphery of the driving rotor disc (2) in a barrel shape; the driven rotor disc (7) which is coaxial with the driving rotor disc is connected with the driven main shaft (11) by transmission in the circumferential direction and sliding connection is formed in the axial direction; and the periphery of the driven rotor disc is distributed with the permanent magnet (16) opposite to the induction copper ring (4) in radial direction. The speed regulator also comprises a regulating device used for regulating the axial position of the driven rotor disc opposite to the driven main shaft.

The present invention relates to the technical field of vertical drilling machine equipment, in particular to a continuously variable speed vertical drilling machine. The cabinet body is divided into upper and lower cabinets by partitions, and the lower cabinet is provided with a Sleeve, the auxiliary shaft is installed on the partition in the lower box, the sleeve is sleeved on the auxiliary shaft and can slide axially along the auxiliary shaft, and the main shaft passing through the partition is arranged on the partition on the side of the auxiliary shaft in the lower box , the main shaft extends through the partition to the upper box, and the auxiliary transmission wheel is installed on the main shaft in the upper box, and a permanent magnet motor is installed on one side of the upper box or/and the lower box, and a drive is installed on the motor shaft of the permanent magnet motor. The main transmission wheel that the secondary transmission wheel rotates, the main shaft in the lower casing is provided with the main gear that drives the secondary shaft to rotate, and the speed of the permanent magnet motor is controlled by the controller or by remote control. The advantages are: easy installation, reduced equipment volume and manufacturing costs, and at the same time can reduce the occurrence of failures, increase service life, improve work efficiency, and make products more intelligent.

The invention provides a three-roller open mill for bulletproof cloth. The three-roller open mill is low in manufacturing cost, and the rotating speed of rollers can be easily and conveniently debugged. The three-roller open mill comprises a base, a rack, a drive device, a front roller, a middle roller and a rear roller. The two ends of the front roller, the two ends of the middle roller and the two ends of the rear roller are supported on the rack, the drive device and the rack are fixed on the base, and a speed ratio gear device is fixed at the position, located between the rack and the drive device, of the rack. The speed ratio gear device comprises a driving gear and two driven gears. The two driven gears are arranged on the two radial sides of the driving gear and meshed with the driving gear, the shaft input end of the driving gear is connected with the output end of the drive device, and the shaft output end of the driving gear and the shaft output ends of the two driven gears are connected with the middle roller, the front roller and the rear roller respectively.

The present invention discloses a single-worm surpassing clutch and its stepless speed variator. It is single-worm surpassing clutch type stepless speed variator assembled using the single-worm surpassing clutch. The present invention is novel in structure, and compared with the existent technology, the output power is more stable and possesses the characteristics of long service life, high reliability low cost, etc.

The invention discloses a dual-voltage control switch reluctance motor. A motor drive unit comprises a first MOS (Metal Oxide Semiconductor) transistor BG1 and a third diode D3; the source electrode of the first MOS transistor BG1 is connected with the positive electrode power supply end of the switch reluctance motor, and the drain electrode of the first MOS transistor BG1 is used for being connected with a first power supply VG; the grid electrode of the first MOS transistor BG1 is connected with a gasket and a unit; the cathode of the third diode D3 is connected with the positive electrode power supply end of the switch reluctance motor; the anode of the third diode D3 is used for being connected with a second power supply VD; and the cathode power supply end of the switch reluctance motor is grounded. The dual-voltage control switch reluctance motor also comprises an energy storage unit, wherein the energy storage unit comprises a third MOS transistor BG3, a first capacitor C1, a second capacitor C2, a third capacitor C3, a first diode D1 and a second diode D2. According to the technology, the nose of the motor and the switching frequency of a power device can be reduced, thus the efficiency of the system and the reliability of a controller are improved.

The invention provides an electric cable take-up and pay-off barrow and belongs to the field of cable take-up and pay-off barrows. The barrow comprises a barrow body, four barrow wheels are arranged at the bottom of the barrow body, two supports are arrange at one side of the barrow body, a step plate is arranged at the other side of the barrow body, two opposite baffles are arranged at the position, adjacent to the step plate, of the barrow body, transmission parts are installed at corresponding positions of the two baffles through bearings respectively, a through hole is formed in each transmission part, a revolving shaft is arranged, the two ends of the revolving shaft pass through the through holes of the two transmission parts, a groove is formed in the middle position of the barrow body relative to the two baffles, an arc-shaped plate is arranged in the groove, a jack is arranged between the bottom of the arc-shaped plate and the bottom of the groove, a transmission shaft and a motor are arranged on the barrow body, chains are used for matching the motor with the transmission shaft and a transmission part, a power source is arranged on the barrow body, and the power source end of the motor is connected to the power source. By means of the barrow, the cable take-up and pay-off are simple to conduct, the construction does not need multiple people, and the extreme convenience and safety are achieved.

The invention relates to a music fan based on swing blade air changing and a control method of the music fan based on swing blade air changing. The music fan comprises a power unit, a supporting unit, a humidification unit, a swing blade driving unit and a control unit; the power unit comprises two fan bodies and is located in the outer shell; the supporting unit comprises a supporting structure and the outer shell; moisture of the humidification unit is led into the outer shell through moisture inlet holes; the swing blade driving unit comprises a front beam, a back beam, a stepping linear lead screw motor, two polish shafts, eight screws, six swing shafts, six fixedly-connected pieces, six rotating shafts, nuts, separating plates, six connecting sheets and six swing blades. An open-loop control linear lead screw motor for converting electric pulse signals into linear displacement is used in the music fan. Under the non-overload condition, the rotating speed and the stopping position of the motor are only determined by the frequency and the pulse number of the pulse signals and are not influenced by load changes; the angular displacement amount is controlled by controlling the number of pulses, and the aim of accurate positioning is accordingly achieved.

The invention provides an infinitely variable speed transmission mechanism, and relates to the technical field of transmission mechanisms. The infinitely variable speed transmission mechanism comprises a transmission mechanism, wherein a threaded rod is arranged in the middle in the transmission mechanism; the front side and the rear side of the threaded rod are independently provided with a sliding chute; the middle of the outer part of the threaded rod is covered with a round pipe; the front side and the rear side of the inner wall of the round pipe are independently rotatably connected witha plurality of balls; the balls and the sliding chutes are in sliding connection; the left end and the right end of the threaded rod are independently in threaded connection with a thread ring; one side of each thread ring is independently welded with a shifting fork; two shifting forks have opposite orientations; the right side of the threaded rod is fixedly provided with a stopping block; and the left side of the threaded rod is fixedly connected with an air cylinder. The infinitely variable speed transmission mechanism has the beneficial effects that under mutual cooperation of the shifting forks, the thread rings and the threaded rod, transmission wheels can be driven to move between left and right, and a rotation wheel diameter of a variable speed belt is changed so as to achieve a purpose of speed regulation. The infinitely variable speed transmission mechanism has a simple structure, is stable in axial straight-line speed change in short distance and small space, is quick in improving speed and is simple to operate.

The invention relates to a deep space exploration simulation training device based on series-parallel five freedom degree and a working method of the deep space exploration simulation training device. A series freedom degree mechanism and a parallel freedom degree mechanism are combined to achieve five freedom degree motion in the space, five-freedom-degree motion can be achieved within a normal gravity field, and states like transverse overweight, lateral overweight, lateral weightlessness, longitudinal overweight and longitudinal weightlessness are simulated. The deep space exploration simulation training device based on the series-parallel five freedom degree and the working method of the deep space exploration simulation training device can utilize the advantages of a series device which is simple in structure, low in cost, easy to control, wide in motion range and the like and can also utilize the advantages of the parallel device which is high in rigidity, bearing capability and precision, small in tail end piece inertia and the like, ensure that the mechanisms have more comprehensive advantages, are reasonable in decomposition free degree, and achieve five-freedom-degree motion, and the control over the motion is simplified, achieve multifunctional and multi-pose integration in the space, and ensure that training is more reasonably and comprehensively carried out.

The invention relates to a dedicated electromagnetic torque-variable speed adjuster for an oil pumping unit. A bracket is fixed onto one end of a base; one side of the bracket is provided with a servo driver; the other end of the bracket is provided with a guide sleeve; an axially movable guide shaft is arranged in the guide sleeve; a screw rod connected with the servo driver is provided with a screw nut; the screw nut is fixed to the guide shaft; a connection sleeve is supported by an end head of the guide shaft through a sleeve shell and a bearing A; the connection sleeve is fixedly connected with a squirrel cage active rotor of which the periphery is conical surface-shaped; permanent magnets are fixed onto the surface of the inner hole of the conical surface of a permanent magnet passive rotor; the inner surfaces of the permanent magnets are matched with the outer surface of the squirrel cage active rotor; the two conical surfaces form an air gap; the permanent magnet passive rotor is connected with an output pulley; an input shaft is supported by bearings in the inner hole of the output pulley; the input shaft is inserted into the inner hole of the squirrel cage active rotor; and the input shaft and the squirrel cage active rotor are relatively fixed in a circumferential direction and are connected with each other in a manner that the input shaft and the squirrel cage active rotor can axially slide relatively; and a connecting hole is formed at one end head of the input shaft. The dedicated electromagnetic torque-variable speed adjuster for the oil pumping unit has the advantages of structure simple, real-time control of the up and down stroke speed of the oil pumping unit, servo adjustment of the number of the strokes of the oil pumping unit and long service life.