639 results about "High torque" patented technology

The invention discloses a magnetic adjusting assembly, a motor, an electric drive system and a vehicle, and the magnetic adjusting assembly comprises a magnetic conductive part which is suitable for being movably disposed on one side of a rotor in the radial direction, so as to adjust the magnetic flux passing through the rotor. According to the magnetic adjusting assembly, the magnetic flux passing through the rotor is adjusted to change the magnetic flux of the magnetic flux short-circuit loop formed by the magnetic conductive piece and the rotor, so that the adjustment of the magnetic flux of the main magnetic field is realized, the adjustment is convenient, and the motor applying the magnetic adjusting assembly has the advantages of a constant torque area and a constant power area; and a constant-power operation region and a high-efficiency region are effectively widened while high torque density and power density are ensured.

The invention relates to the technical field of suspension conveying systems, in particular to a servo-driven intelligent suspension conveying system, and solves the problems that when a servo motor suspension conveying system accelerates or decelerates, due to inertia of goods at the bottom, the power output power of a suspension system of a servo motor and the burden of a brake system are heavy, and the service life is short. And the service life of a servo motor and a brake system is shortened after long-time work. A servo-driven intelligent suspension conveying system comprises a conveying guide rail module, a guide rail sliding block, a sliding block driving module, a conveying suspension module and a control module, and the sliding block driving module is located on the outer side of the guide rail sliding block. When the guide rail sliding block is started, magnetic repulsion of the electromagnet to the guide rail sliding block is adjusted, the output torque of the double-shaft servo motor and the rotating load of the driving shaft are reduced, the situation that the double-shaft servo motor is damaged or breaks down due to high torque and high load when the double-shaft servo motor is started is avoided, and the service life of the double-shaft servo motor is prolonged.

The invention relates to the technical field of electric vehicle driving control, and particularly discloses a driving control system and method for intelligent transfer equipment. The driving control method is used for solving the driving control problems of large current tracking error, high torque ripple and noise vibration, unstable regeneration and poor low-speed micro-climbing and ramp restarting response caused by sampling and inverter time lag, parameter drift, bus fluctuation and degradation faults of a six-phase permanent magnet synchronous motor of intelligent transfer equipment under the complex working condition of a port. The system comprises an AT-AGV, a PMSM, a six-phase inverter, a DC bus, a controller and a planning module. Through midpoint sampling, two-beat equivalent time-delay modeling and limited deadbeat voltage optimization, and in combination with xy harmonic compensation, online parameter identification, three-section regeneration trajectory and fault-tolerant SVPWM, robust stability and high-efficiency recovery under low-overshoot rapid torque establishment, low ripple and low NVH, bus fluctuation and fault are realized; accurate current tracking and smooth traction are realized during micro-crawling and ramp restarting.

The invention provides a wheel torque distribution method, device and equipment and a vehicle, and is applied to the technical field of vehicle control, and the method comprises the steps: determining the structure perception characteristics representing the torque control priority of each wheel based on the current wheel state data, and determining the torque control priority of each wheel based on the wheel state data of a first preset time period until the current moment; and predicting the state of each wheel in a second preset time period after the current moment to obtain state prediction information of each wheel, performing torque distribution on each wheel based on the structure perception characteristics and the state prediction information, and determining the target torque of each wheel. The key driving wheel, namely the wheel with the highest torque control priority, can be effectively identified, so that the wheel torque is reasonably distributed in time, the intelligent distribution of the wheel torque is realized, the vehicle escape time and energy consumption are reduced, and the control precision is improved.

A mounting system for mounting a device to an object includes a mount having a fixed portion, and a movable portion slidingly engaged with the fixed portion. The fixed and the movable portions defining a base, and when engaged with one another defining a circular profile. A lever is pivotally mounted to the fixed portion so as to operably engage the movable portion in a locked position and disengage from the movable portion in an unlocked position. A connector is operably engaged with the fixed portion. An indexed adjusting system has a coin-shaped body having a series of circumferentially equally spaced semi-spherical projections on both sides of the body, and first and second series of circumferentially equally spaced dimples positioned on the fixed portion and on the connector, respectively. The semi-spherical projections on both sides of coin-shaped body engages the circumferentially equally spaced dimples positioned on the fixed portion and the connector, respectively. A fastener engage the fixed portion with the connector, such that a low torque on the fastener permits a smooth friction hold between the mount and the connector, a medium torque permits an indexed friction hold and a high torque is a fully locked condition of the mount and the connector.

Systems, methods, and devices for blowout preventer independent alignment and installation of a tubing hanger within a subsea well system. A tubing hanger orientation assembly may be included with a rotary actuator that provides high torque adjustment and fine alignment of the tubing hanger with respect to other subsea equipment. At least one sensor may be included to measure and confirm an orientation of the tubing hanger for proper alignment and connection to a subsea wellhead.

The application provides an engine torque calibration method and device and a vehicle controller, and belongs to the field of vehicle control, wherein the method comprises the following steps: obtaining an engine target torque and a generator signal torque of a hybrid vehicle; calculating a torque deviation of the hybrid vehicle according to the engine target torque and the generator signal torque; calculating an engine demand torque of the hybrid vehicle based on self-learning of the torque deviation, and calibrating the engine signal torque based on the engine demand torque, so that the engine signal torque, the generator signal torque and the engine target torque of the hybrid vehicle are consistent. Through the embodiment of the application, the problems that the real engine torque is too large to cause poor fuel consumption performance and poor drivability in low-temperature extreme working conditions are solved, the problem that the real engine torque is too small to cause unbalanced electric quantity in the emission cycle test process is solved, the fuel consumption performance of the vehicle is improved by improving the torque accuracy, the low-temperature driving performance of the vehicle is improved, and the electric quantity is more easily balanced.

The invention discloses a micro-robot joint driving mechanism and a multi-joint micro-robot, and relates to the technical field of micro-robots. According to the joint driving mechanism, through the axial integrated arrangement of the shell, the brushless outer rotor motor, the multi-stage meshing transmission assembly, the power output connecting piece and the circuit board and the integrated design of a stator of the brushless outer rotor motor and the circuit board, a compact micro structure is achieved; and a closed-loop position detection system formed by a magnetic encoder and a magnetic ring is matched, so that high torque output and high transmission efficiency are realized under the condition of miniaturized volume, and meanwhile, part redundancy is reduced so as to reduce the cost. The mechanism solves the problem that miniaturization, high torque and low cost are difficult to consider in the prior art, and can be widely applied to miniature multi-joint robots.

The invention belongs to the technical field of machine tool motorized spindles, and relates to a preload adjusting device applied to a rear bearing of a motorized spindle, the motorized spindle and the motorized spindle comprising the preload adjusting device. The device is integrated at the rear end of an electric spindle, a rear bearing piston is driven by hydraulic oil to move axially, pre-tightening force on a load bearing is dynamically applied and accurately adjusted, and the pre-tightening force is finally transmitted to a broach mechanism. The pretightening force of the motorized spindle can be automatically adjusted according to the rotating speed (low, medium and high), the contradiction between high rigidity and low temperature rise in the wide rotating speed range is solved, the high-performance motorized spindle is particularly suitable for high power, high torque and the wide rotating speed range, and high rigidity during low-speed heavy cutting and long service life during high-speed operation are achieved.

The invention provides an output torque control method, electronic equipment and a vehicle, and belongs to the technical field of vehicle torque control, torque feedforward is combined with acceleration closed-loop control and is combined with a series-parallel closed-loop control framework with dead-zone compensation torque closed-loop control, and the final output is torque instead of the position or speed in the related technology. This enables a series-parallel closed-loop control architecture to very conveniently construct a torque control system. The series-parallel closed-loop control architecture utilizes feedforward to realize almost delay-free response so as to reduce control delay, and utilizes acceleration closed-loop control to inhibit internal and external disturbance, enhance robustness and improve torque control precision. Interference of a non-linear dead zone is overcome through dead zone compensation, and the torque control precision of low-speed and steady-state scenes is guaranteed. Therefore, the series-parallel closed-loop control architecture can dynamically adjust the output torque in the driving process, so that accurate and rapid conversion from the acceleration to the torque of vehicle longitudinal control is realized, and the control precision and the response speed of the output torque are improved.

The utility model provides a joint motor module and a humanoid robot, and belongs to the technical field of humanoid robots, the joint motor module comprises a motor assembly, the motor assembly comprises a motor housing, a motor cover body, a motor stator and a motor rotor shaft, the motor cover body is connected with the motor housing and seals an opening at one side of an accommodating cavity; the harmonic reducer is connected with the motor shell and seals the opening in the other side of the containing cavity. The motor has the advantages that the motor stator can generate a variable magnetic field so that the motor rotor shaft can rotate, power is output by the harmonic output flange through the speed reduction assembly of the harmonic reducer, compared with the prior art, the control precision is high, torque output is large, meanwhile, the harmonic reducer is directly connected with the motor shell, the structure is compact, and cost is low. The length and the size of the joint module are effectively reduced, and the appearance size is further reduced on the premise that the control precision is guaranteed.

The embodiment of the invention discloses a hollow, double-braided and integrated robot joint module with high torque density, and relates to the technical field of frameless torque motors and robot integrated joints. The joint module comprises a planetary reducer, a hollow shaft, a composite Halbach structure frameless torque motor and the like. According to the composite Halbach structure frameless torque motor, through the distribution design of the main magnet and the auxiliary magnet in the steel ring magnetic group and the ferromagnetic design arranged on the main magnet and / or the auxiliary magnet, the effect of increasing the rotating speed and the torque of the shutdown module is achieved. The air cooling design of a variable-torsion-angle structure is adopted for the joint module, so that the temperature rise of the joint module during working can be effectively reduced; the hollow design of the joint module facilitates wiring planning and management in subsequent integration of the joint; the joint module adopts a magnetic double-braided design, has the function of synchronously detecting the rotation angles and the rotation speeds of an input end motor and an output end planetary reducer, and improves the joint transmission precision through position synchronization and speed synchronization.

The invention discloses a vehicle torque adjusting method and device and a storage medium, and relates to the technical field of torque adjusting.The method comprises the steps that acceleration data and wheel speed data of a vehicle in the driving process are obtained; determining a vertical motion sickness coefficient according to the acceleration data; determining a pavement roughness coefficient according to the wheel speed data; and according to the pavement roughness coefficient and the vertical motion sickness coefficient, the current demand torque of the vehicle is filtered, and the target demand torque is obtained. The road condition and the carsickness condition of a user are comprehensively considered, so that the required torque of the vehicle is dynamically adjusted according to the road roughness coefficient and the vertical motion sickness coefficient, the torque adjusting effect is improved, sudden power change caused by sudden road change or driving behaviors is reduced, stable operation of a vehicle power system is kept, and the driving safety of the vehicle is improved. And the driving comfort is improved according to the carsickness degree of the passenger while the performance of each driving mode is not influenced.

The application provides a torque compensation method and system in motor jitter, and the method comprises the following steps: acquiring a current rotating speed of the motor; when the rotating speed of the motor is less than a first predetermined value, calculating a rotating speed acceleration according to a motor rotating speed signal, and performing rotating speed compensation on the motor under different rotating speed accelerations based on a calibration value corresponding to the rotating speed acceleration; when the rotating speed of the motor is greater than the first predetermined value, calculating a vehicle acceleration according to an IPB system signal, and performing rotating speed compensation on the motor under different vehicle accelerations based on a calibration value corresponding to the vehicle acceleration. Through the scheme, the rotating speed delay generated by the low-pass filter can be reduced, the torque compensation error can be reduced, and the accuracy of torque compensation can be improved.

The application discloses a high-torque electromagnetic energy engine based on a linear motor and belongs to the technical field of engines, which comprises a base for fixing the whole equipment to work, a driving mechanism installed on the top of the base and used for providing power for the whole equipment, two fixing plates connected with the surface of the base at the bottom, and an outer shell connected with the top of the fixing plate through bolts. The application has the advantages that the innovative mechanical structure design and electromagnetic energy conversion mechanism can efficiently convert the electromagnetic energy of the linear motor into high-torque rotary power, the high thrust characteristic of the linear motor can output significantly increased torque under smaller power input, the energy conversion efficiency is significantly improved, and the energy consumption is reduced. The innovative design not only makes the engine more energy-saving during operation, but also can meet the strict power requirements of various devices requiring large-torque output.

The invention relates to the technical field of motors, and discloses a flywheel energy storage motor stator-rotor structure and an optimization method thereof, and the flywheel energy storage motor stator-rotor structure comprises a stator body, a rotor body and a motor air gap. The method further comprises the following steps: step 1, designing an air-gap magnetic field: by adjusting the shape and the arrangement mode of a motor air gap or a permanent magnet, enabling a flux density waveform to be close to a sine wave when the motor air gap is in a no-load state so as to suppress harmonic waves; step 2, slot-pole matching design: a stator winding adopts a fractional slot concentrated winding form, a high fundamental wave winding factor is obtained by adjusting the matching relation between stator slots and permanent magnet pole numbers, and specific subharmonics are suppressed from a winding magnetomotive force level; 3, magnetic circuit and structure design: magnetic circuit saturation is suppressed by adjusting the geometric dimensions of stator teeth and a yoke part; according to the invention, the comprehensive performance targets of high torque density, high efficiency and low torque pulsation of the flywheel motor can be realized at the same time.

The utility model discloses a large-torque load-bearing bearing, which relates to the technical field of bearings and comprises an outer ring, a vertical curled edge is arranged on one side of the outer ring, and limiting bent edges are arranged on the other side of the outer ring in an annular array manner; the retainer is mounted on the inner side of the outer ring, and the spring pieces and the roller pins are arranged on the inner side of the retainer in an annular array manner; the retainer comprises two side check rings which are arranged in parallel, spacing baffles are integrally arranged on the side faces of the side check rings, and the spacing baffles are distributed on the inner sides of the side check rings in an annular array mode; according to the utility model, the cross section of the outer ring is L-shaped, the position of the retainer is positioned through the curled edge on one side, and the curled edge on the other side of the outer ring is replaced by the limiting bent edges which are arranged in an annular array manner, so that the side space of the outer ring is released, and the torque directly acts on the roller pins, thereby increasing the torque when the load bearing is used.

The invention discloses a speed reduction assembly and a rotary machine tool applying the same, and relates to the technical field of machine tools, the speed reduction assembly comprises a power gear shaft and a retainer I, a plurality of planetary gear shafts are mounted on the retainer I, the power gear shaft is meshed with the planetary gear shafts, gear rings are meshed with the outer sides of the planetary gear shafts, a retainer II is mounted between the power gear shaft and the retainer I, and the retainer II is meshed with the planetary gear shafts. Meshing cavities with the number the same as that of the planetary gear shafts are formed in the second retainer, through the design of the second retainer, the relative positions between the power gear shafts and the planetary gear shafts can be further stabilized, the transmission precision of the speed reduction assembly is improved, the second retainer is installed on the first retainer through a fastener, and therefore the transmission precision of the speed reduction assembly is improved. The fastening piece is designed in a split mode according to the number of the planetary gear shafts, a plurality of second deformation grooves are formed between every two adjacent meshing cavities in the second retainer in the radial direction, so that the second retainer has certain deformation capacity, and output of torque can be effectively improved when the speed reduction assembly is used for power transmission.

The invention relates to a clutch assembly and an electric bicycle. The clutch assembly includes: a clutch; the torque sensor assembly comprises a strain sleeve arranged on the outer side of a clutch in a sleeving mode and used for being in transmission connection with the clutch, the outer wall of the strain sleeve is provided with a strain area and a torque output area in the axial direction, and the thickness of the strain area is smaller than that of the torque output area; and the strain sensing element is fixed on the outer wall of the strain area. The strain sleeve sleeves the outer side of the clutch, so that the torque sensor assembly which originally needs to occupy large axial space of the middle shaft and the clutch are integrated, the axial space of the middle shaft can be saved, efficient utilization of the axial space of the middle shaft is achieved, and the torque sensor assembly and the clutch are preassembled. The operation difficulty is reduced; and the steps of a terminal customer assembly process are simplified. The thickness of the strain area is smaller than that of the torque transmission area, deformation of the strain area is facilitated, and the signal acquisition sensitivity of the torque sensor assembly is improved.

The present invention discloses a highly conductive split ring of an omnidirectional elastic member. The highly conductive split ring of an omnidirectional elastic member according to the present invention solves the problem of corrosion of peripheral components caused by axial current in high-speed electric motors, which directly affects the operating stability of bearings mounted on the main shaft, thereby affecting the stability of the electric motor under conditions of high rotational speed, high power, and high torque. It also overcomes the state-of-the-art technical challenge of limiting the output of the electric motor, which belongs to the problem of axial current that needs to be resolved quickly, otherwise it may cause a potential safety hazard. The multiple fan-shaped lip edges used in the present invention not only ensure good electrical contact and sufficient contact area with the main shaft, but also move synchronously with the radial or axial movement of the main shaft, demonstrating excellent performance in following the main shaft operation and ensuring good instantaneous electrical contact between the conductive silicone adhesive and the main shaft. [Solution] The split ring comprises an outer frame, a support ring, and a conductive assembly, and the conductive assembly includes a conductive ring, multiple lip edges, a conductive silicone adhesive after it has solidified from a liquid state, and a conductive elastic member that is integrally attached to the conductive silicone adhesive.

The invention provides a control method and system for a high-torque-density robot joint module and relates to the technical field of robot joint module control, and the method comprises the steps that three-dimensional image information of waste to be compressed is obtained; determining a compression resistance degree three-dimensional distribution diagram of the to-be-compressed waste based on the three-dimensional image information of the to-be-compressed waste; based on the multiple sets of test fixing schemes, a high-torque-density robot joint module is controlled to fix and shake waste materials to be compressed; determining an initial fixing scheme and a preliminary compression depth based on the shaking video of the to-be-compressed waste fixed by each test fixing scheme; and based on the adjusting and fixing scheme, a high-torque-density robot joint module is controlled to fix the to-be-compressed waste, and a compressor is controlled to conduct compression. According to the method, the optimal fixing and compression cooperative control scheme of the to-be-compressed waste can be efficiently and accurately determined.

The invention discloses a low-noise transmission mechanism capable of coaxially outputting large torque, which is characterized in that a motor is fixed on a casing through a screw, a knurling position on a motor shaft is tightly pressed and matched with an eccentric shaft sleeve and is in transmission with the motor shaft, the eccentric shaft sleeve is arranged in a power output disc, and a fixed inner gear is sleeved into the power output disc to be meshed with two cycloidal gears; the tooth surface of the convex tooth root of the power output disc meets the tooth surface of the concave tooth root of the fixed inner gear, the linear teeth can provide smooth tooth surface pairing all the time, the tooth root tooth surface of one gear cannot make contact with the tooth root tooth surface of the other gear, the cross sliding block is installed in the power output disc, the output shaft is installed on the cross sliding block, and the output shaft is sleeved with the front cover plate and fixed through a screw. The transmission efficiency is high, rolling friction is achieved, the structure is simple, the input shaft and the output shaft are located on the same axis, the size is small, and contact stress is small; transmission parts are good in abrasion resistance, low in noise, high in bearing capacity, small in part heating, long in service life, small in tooth surface abrasion and convenient to install, and multi-tooth meshing is achieved.

A driving device and an electric vehicle relate to the technical field of power assembly torque detection, a shell of the driving device comprises a groove, a torque sensor is fixed on the inner wall of the groove, the shell comprises another groove, and the other groove is used for accommodating a bearing. One through hole is used for penetrating through the bottoms of one groove and the other groove in the axial direction of the driving device, one end of one transmission shaft of the generator, the driving motor and the speed reducer penetrates through the through hole, and the torque sensor and the bearing surround the same end of the transmission shaft. In the embodiment, the same end of the transmission shaft provided with the bearing is provided with the torque sensor, the torque sensor detects the torque of the transmission shaft around the transmission shaft, the bearing is supported between the inner wall of the shell and the transmission shaft, radial displacement of the transmission shaft is reduced, shaking of one end of the transmission shaft is slowed down, and torque detection is prevented from being affected by radial movement of the transmission shaft. The stability and accuracy of the torque sensor on the torque detection of the transmission shaft are improved.

The present invention produces a polycarbonate resin composition pellet having excellent transparency in a more stable and highly productive manner than before by using an ultra-high torque twin-screw extruder. This method for producing polycarbonate resin composition pellets is characterized in that: polycarbonate resin particles having a specific molecular weight and particle diameter are used as a starting material, and kneading is performed at a screw shaft torque density in the range of 9.0-17.0 Nm / cm3 and a screw rotation speed in the range of 400-800 rpm; and the non-melting rate in the die holder is in the range of 2-30% under the condition that the discharge amount (kg / h) / screw rotation speed (rpm) / cube of the center distance of the two screw shafts (cm3) is 0.015-0.026 kg / h / rpm / cm3, and collecting the wire material extruded from the die and granulating the wire material.

The utility model relates to the technical field of irrigation auxiliary equipment, in particular to a water pipe winding vehicle which comprises a supporting frame, the supporting frame is rotationally provided with a winding frame, the winding frame is driven by a handle to rotate, and the winding frame is in transmission connection with the handle through a gear reduction assembly. The gear reduction assembly is a first-stage reduction gear set, and the handle is in transmission connection with the gear reduction assembly through a driving connection mechanism. The first-stage reduction gear set is arranged between the handle and the winding frame for transmission, speed reduction is achieved, torque is improved, and an operator can wind a water pipe easily in a labor-saving mode. The driving gears and the corresponding supports are installed together through the driving connecting rods of the cranks, the gear speed reduction sets are fixed to the supports through self-tapping screws after being assembled for overall assembly, finally, the wheel discs and the gear speed reduction sets are connected through the connecting rods, power transmission is achieved, and the structure is stable, firm and convenient to disassemble and assemble.

A cognitive assessment and stimulation method and a robotic platform for hippotherapy that comprises a structure comprising at least a high torque servomotor, and an articulated mechanism that simulates the horse's head, at least two load cells placed on the articulated mechanism of the structure, for controlling direction and speed, at least one seat module, that comprises at least one inertial sensor of posture intended to be placed on the patient to determine his / her posture, and one or more load cells placed on the seat to determine the load distribution thereon; and at least two pressure sensors for speed control and that further comprises a temperature control module, which allows temperature control, a visual stimulation sub-module and / or an auditory stimulation sub-module, a crane type module coupled to a harness comprising some stirrups which allow the transfer of the patient and also providing control of weight on the platform and give security to the patient, avoiding the risk of falling.

The invention relates to the technical field of automobile control, in particular to an anti-skid control method and device for a four-wheel-drive electric automobile and the automobile, and the method comprises the steps that the driving torque, the four-wheel positive pressure and the resultant pressure after rolling torque distribution of the four-wheel-drive electric automobile during wheel speed slipping are obtained, and the friction coefficient of the automobile is estimated according to the three parameters; and judging the friction working condition of the four-wheel-drive electric vehicle based on the friction coefficient. Under the friction working condition, four-wheel gravity is calculated, and four-wheel driving force, a driver control signal and a vehicle body posture signal are obtained; and determining a front wheel resultant moment and a rear wheel resultant moment based on the four-wheel gravity, the four-wheel driving force, the driver control signal and the vehicle body posture signal. And under the slipping working condition of the four-wheel-drive electric automobile, anti-slip control is conducted on the automobile according to the front wheel resultant moment and the rear wheel resultant moment. Therefore, the problems of difficulty in timely and active inhibition of vehicle slipping and drifting under high torque on the ice and snow covered pavement, insufficient safety and the like in related technologies are solved.

The invention relates to the technical field of turbochargers, in particular to a turbocharger turbine shaft and compressor impeller connecting structure and method, and the turbocharger turbine shaft and compressor impeller connecting structure comprises a turbine shaft screw, a locking screw, a locking nut, a compressor impeller bushing screw, a locking nut gasket, a compressor impeller, a turbine shaft and a compressor impeller bushing. The compressor impeller bushing is mounted in an inner hole of the compressor impeller in an interference fit manner and is fixed at the head of the compressor impeller through a screw; the turbine shaft is connected with the compressor impeller bushing through a quincunx structure; the turbine shaft screw rod is installed on the main shaft through threads, the locking nut is screwed on the turbine shaft screw rod and fixed through the locking screw, and the stability of the compressor impeller is ensured. The main shaft transmits torque to the compressor impeller lining through the quincunx structure, and then the torque is transmitted to the compressor impeller through interference fit of the lining and friction force of the locking nut. The structure is simple, connection is reliable, and the torque transmission efficiency and the system stability can be effectively improved.

The invention discloses a multi-source coupling driven cross-medium unmanned aerial vehicle power device, and relates to the technical field of cross-medium aircrafts. The device comprises a machine base assembly, a plurality of driving units distributed in the circumferential direction, input gears connected with the driving units respectively, and a center output gear located in the center and externally meshed with the input gears. Through a multi-path parallel fixed shaft transmission structure without an inner gear ring, the power of a plurality of driving units is converged to a central output shaft. By means of the gear speed reduction and torque increasing principle, the propeller obtains high torque output at the low rotating speed, the problem of non-linear torque surge caused by liquid drop impact at the near-water-surface stage and the water outlet stage of the cross-medium aircraft is effectively solved, and the water-air mixing flow field and the lift force attenuation effect induced by the high rotating speed are avoided by means of the low rotating speed characteristic; and meanwhile, due to the multi-motor redundancy design, the anti-interference capability and the task reliability of the power system under the severe sea condition are remarkably improved.