2254 results about "Gear transmission" patented technology

The application relates to a dumbbell which is convenient for adjusting a load. By arranging telescopic sleeves which can be telescopically adjusted in a handle of the dumbbell, a number of counterweights nested on the telescopic sleeves is controlled, thus achieving an easy adjustment of the load. By arranging a rotatable knob, the telescopic sleeves inside the handle are driven to act through a gear transmission. Meanwhile, due to a position limitation of a division bar of the dumbbell, the counterweights nested on the telescopic sleeves are prevented from sliding left and right, thus ensuring a firm coupling.

The invention relates to a tractor gearbox transmission structure and a new energy tractor. The tractor gearbox transmission structure comprises a walking motor, a power output motor, a rear axle, a transmission first shaft and a transmission second shaft, the walking motor is connected with the transmission first shaft, the transmission first shaft is connected with the transmission second shaft through a planetary gear transmission mechanism, the transmission second shaft is connected with the rear axle, and the power output motor is connected with a third transmission shaft. The third transmission shaft is provided with a hybrid clutch and is connected with a first shaft of the transmission through the hybrid clutch and the power transmission assembly, the third transmission shaft is further connected with a PTO transmission assembly through a PTO clutch, and the PTO transmission assembly is connected with a PTO transmission shaft. The invention has the advantage that the purpose of flexible use of the walking motor and the power output motor during low-load operation and high-load operation can be achieved.

The invention relates to a spiral bevel gear system dynamics modeling method based on bidirectional fluid-solid coupling, and belongs to the technical field of aviation transmission, and the method comprises the following steps: S1, calculating the radial deformation and deformation speed of an elastic ring through an analytical method; s2, solving a transient control equation of oil film pressure by taking the radial deformation and the deformation speed of the elastic ring calculated in the step S1 as input to obtain ERSFD internal and external oil film pressure distribution; obtaining a rigidity coefficient and a damping coefficient of the oil film through numerical integration; s3, establishing a kinetic model of the spiral bevel gear transmission system by adopting a lumped parameter method, and deducing a differential equation of the gear system; and S4, through the ERSFD oil film dynamic characteristics calculated in the S2, internal excitation and external excitation are comprehensively considered, an ERSFD-spiral bevel gear system coupling dynamic response result is obtained, the modeling method considers the influence of the elastic ring boss structure characteristics and the complex coupling relation oil film-elastic ring current-solid coupling effect, and the accuracy and calculation efficiency of the model are improved to the maximum extent.

An electric drive axle, comprising a unique driving electric motor (1), a reducer assembly and a differential assembly (13), wherein the reducer assembly is provided with a first reduction stage, a first-gear transmission mechanism, a second-gear transmission mechanism and a power takeoff, the first-gear transmission mechanism is provided with a first-gear shifting mechanism for switching between a neutral gear and the first gear, the second-gear transmission mechanism is provided with a second-gear shifting mechanism for engaging and disengaging the second gear, the first-gear shifting mechanism is arranged between an axle and the driving electric motor, the second-gear shifting mechanism is arranged coaxial to the axle, and the second-gear transmission mechanism is in direct transmission connection with the power takeoff. The electric drive axle has the dynamic property, the economical efficiency, the space utilization rate and the power takeoff efficiency. Further disclosed is an electric truck comprising the electric drive axle.

The invention relates to a mushroom cultivation technology, and discloses a rotary frame type mushroom planting square cabin and a using method thereof.The rotary frame type mushroom planting square cabin comprises a rotary frame supporting structure installed in the planting square cabin, and a rotary rail is installed below the rotary frame supporting structure; the rotary track is arranged in the planting square cabin in a reciprocating snake shape, and is connected to form a closed comb-shaped curve track at the cabin door of the planting square cabin through a linear track; a detachable hanging bracket used for placing a grid frame is installed below the rotary rail, and the rotary rail is connected with the hanging bracket through suspended idler wheels. The gear transmission mechanism is positioned above the linear track, is used for driving the roller to rotate along the rotary track, and is connected with a chain on the rotary track through a gear; and the hanging bracket and the grid frame move along with the rolling wheels under the traction of the rolling wheels. According to the rotary frame type mushroom planting square cabin, the space of the planting square cabin can be utilized to the maximum extent, and the planting density and the production efficiency of the mushroom planting square cabin are improved.

The invention relates to the technical field of data processing, in particular to a gearbox operation state abnormity monitoring and alarming system based on sensor analysis, and the system comprises a data collection module which is used for collecting a vibration signal of a gearbox, obtaining a time domain signal, constructing a time domain graph, converting the time domain signal into a frequency domain signal, and constructing a spectrogram; the data analysis module is used for obtaining a running state preliminary evaluation coefficient of the gearbox according to the amplitude of each frequency in the spectrogram and the number of peak points and valley points in the time domain graph; the feature obtaining module is used for obtaining resonance related feature indexes according to the spectrum width in the spectrogram and the peak point in the time domain graph if the running state preliminary evaluation coefficient is within the preset range; obtaining related characteristic indexes of the engine according to the amplitude of the engine frequency in the spectrogram; and the abnormity alarm module is used for performing abnormity alarm on the gearbox according to the resonance related characteristic indexes and the engine related characteristic indexes, so that the accuracy of performing abnormity alarm on the running state of the gearbox is improved.

The invention provides an organic waste gas separation and treatment device, which relates to the technical field of waste gas separation and treatment, and comprises a device main body. An activated carbon adsorption tower is arranged at the right end position of the device main body. The activated carbon adsorption tower is provided with an inlet and outlet gas isolation device, comprising four movable cover plates, four rubber pads and eight threaded rods. The activated carbon adsorption tower is isolated by an isolation plate, and has two independent working chambers, only one of which keeps working. When the activated carbon filter plate in one chamber is saturated, a motor is started to drive the rotation, and through a series of gear transmission, the threaded rod is finally rotated synchronously. The rotation of the threaded rod drives the translation block to move, and the translation block drives the movable cover plate and the rubber pad to move. The movable cover plate of the left chamber blocks the rectangular groove, and the movable cover plate of the right chamber leaves the rectangular groove. The waste gas is processed from the right chamber instead, and the left chamber stops processing. This avoids the reduction of the treatment effect caused by the saturation of the activated carbon filter plate, and improves the waste gas treatment function.

The utility model belongs to the technical field of tractors, and particularly relates to a tractor combined motor gearbox assembly which comprises a gearbox body, a generator and a driving motor are coaxially arranged on the side wall of the gearbox body, the outer end of an input shaft of the generator is in transmission connection with the crankshaft output end of an engine, and an input shaft is supported on the gearbox body. The input shaft is a hollow shaft, one end of the PTO shaft axially penetrates through the output shaft of the driving motor and is connected with a spline at the inner end of the input shaft of the generator, the other end of the PTO shaft is supported in an inner hole of the input shaft through a lining, the input shaft is connected with the inner end of the output shaft of the driving motor through a spline sleeve, and the gearbox body supports the output shaft. A gear transmission assembly is arranged between the input shaft and the output shaft. The PTO shaft is directly connected with the output shaft of the engine, the engine provides power for the generator to provide electric energy for the driving motor, then the driving motor provides power for the gearbox assembly, the operation requirement of the tractor is met, and stepless speed change can be achieved.

The utility model belongs to the technical field of steering engines, and particularly relates to an assembly type steering engine structure which comprises a steering engine body, a motor is fixedly installed in the steering engine body, the output end of the motor is fixedly connected with a driving gear, a driven gear is arranged in the steering engine body, a planetary gear set is arranged in the steering engine body, and a planetary gear is arranged in the planetary gear set. The output end of the planetary gear set is connected with an output shaft, and a PCB is fixedly installed in the steering engine body. According to the assembly type steering engine structure, the impact resistance of the assembly type steering engine structure is effectively improved by installing the planetary gear set, when the planetary gear set moves, the rotating speed transmitted by the motor is reduced, torque is increased to enable the output shaft to rotate, and joint movement of the wrestling robot is controlled; the output stage adopts a planetary structure, the impact resistance is increased, the service life is prolonged, the transmission efficiency is improved, a PCB, a potentiometer and a motor can be placed on the same side of the steering engine, and the steering engine is more compact.

Provided is a herringbone planetary gear transmission device with a constant meshing characteristics constructed tooth pair, which relates to the technical field of gear transmission. The transmission device includes a sun gear with a constructed tooth pair, a planetary gear with a constructed tooth pair and an internal gear with a constructed tooth pair based on conjugate curves. Normal tooth profiles of the gears with a constructed tooth pair in the present disclosure are all the same combined curve and can be machined by using the same cutter. A common normal at an inflection point or a tangent point of the curve passes through a pitch point of a meshing gear pair, and a sliding ratio of the meshing gear pair is adjusted according to an adjusted position of the inflection point or the tangent point. A contact ratio of the meshing gear pair is designed as an integer.

The invention provides an asymmetric efficiency transmission system design method, which is applied to the technical field of transmission control, and comprises the following steps: S1, constructing a main transmission path model with a first driving side shaft part and a first load side shaft part, S2, constructing a shunt transmission path model with a second driving side shaft part and a second load side shaft part, and S3, constructing a shunt transmission path model with a second driving side shaft part and a second load side shaft part. S3, a parallel node model of the main and shunt transmission paths is constructed, a first load side shaft part and a second load side shaft part are connected through a worm and gear transmission structure, and a second load side shaft with the axial constraint rigidity being # imgabs0 # serves as a worm shaft; according to the design method, the total positive transmission efficiency and the total reverse transmission efficiency of the system and the relational expression between the parameters are obtained, model selection design is conducted on the actual rigidity characteristics and the transmission characteristics of all the models according to the relational expression, the transmission system can have the high positive transmission efficiency and the low reverse transmission efficiency through the design method, and the reverse transmission efficiency is flexible and adjustable.

The utility model relates to the technical field of gear deburring, and discloses a gear deburring device which comprises an operation table, a conveying mechanism is arranged on the inner top wall of the operation table, a clamping limiting mechanism is arranged at the top of the conveying mechanism, a supporting frame is fixedly connected to the top of the operation table, and sliding grooves are formed in the two sides of the supporting frame. Sliding blocks are slidably connected into the two sliding grooves, one side of one sliding block is fixedly connected with a third motor, the output end of the third motor is fixedly connected with a rotating shaft, and the outer surface of the rotating shaft is fixedly sleeved with a brush roller. According to the gear deburring device, the clamping and limiting mechanism, the second motor and the brush roller are arranged, the clamping and limiting mechanism can clamp and limit gears of different sizes, the gears are stably conveyed, the height of the brush roller is flexibly adjusted, and the situation that the brush roller polishes the gears too deeply to damage the gears or polishes the gears too shallow to affect the deburring effect can be prevented; and the effects of stable gear transmission and efficient and flexible deburring are achieved.

The invention discloses a face gear planetary transmission system dynamic uniform load test platform and test method, and belongs to the field of gear transmission, and the test platform comprises a rack, a drive motor, a step-up gear box, a face gear planetary transmission system, a magnetic powder brake, a torque sensor, a slip ring, a stress strain test system and the like. The face gear planetary transmission system comprises an input face gear, a planet wheel, a planet carrier, a fixed face gear and the like. According to the dynamic uniform load test, stress values at the tooth root of the face gear and the tooth root of the planetary gear are measured mainly through strain gauges, and the corresponding relation between the tooth root stress and the meshing force at the gear meshing point is obtained through finite element simulation. And calculating the dynamic uniform load coefficient according to the dynamic meshing force root-mean-square values and the average values obtained at the tooth roots of the face gear and the planetary gear. By testing and analyzing the dynamic uniform load coefficient, the load distribution characteristic of the face gear planetary transmission system can be accurately revealed, a scientific basis is provided for structural parameter optimization, meshing performance improvement and reliability design of the face gear planetary transmission system, and then accurate and high-performance design of the transmission system is achieved.

The utility model relates to a periodic modification structure of a reciprocating mechanical transmission gear, which comprises a transmission gear, a non-meshing surface of the transmission gear is modified to form a meshing clearance, and the meshing surface is gapless. The gear backlash on the meshing side of the gear is eliminated to prevent the gear from being knocked in the return stroke due to the alternate change of positive and negative torque, the non-meshing side is shaped to form the backlash to prevent the interference seizure phenomenon in the gear transmission process, and the gear transmission can achieve the states of more stable operation and lower vibration noise after being changed. The transmission gear is especially suitable for transmission gears of piston connecting rod reciprocating motion machines such as Stirling engines and diesel engines.

The invention relates to a multi-mode gearbox, a hybrid power system and a vehicle, and belongs to the technical field of hybrid power systems. According to the scheme, on the basis that an engine and a motor are coupled through a planet row and output through a multi-gear transmission at the downstream, a gear shifting mechanism is additionally arranged at the input end of the planet row, the gear shifting mechanism can achieve transmission connection of the two input ends of the planet row, and the whole planet row rotates synchronously; the output end of the planet row is directly connected with the output shaft in cooperation with a downstream gear shifting mechanism, 1: 1 direct driving from the first input end to the output shaft is achieved, and a high-speed gear mode with high efficiency and low transmission loss is achieved; meanwhile, when one input end of the planet row is locked through the added gear shifting mechanism, the planet row outputs power input by the first input shaft at the other speed ratio, and when the planet row has two output speed ratios of 1: 1 direct output and non-1, the number of driving modes is doubled in cooperation with a plurality of gears in the downstream multi-gear transmission, and therefore the driving efficiency is improved. And more subdivided working conditions can be efficiently adapted.

The invention relates to a tilt actuation system of a tilt-rotor aircraft. The tilt actuation system comprises a tilt actuation unit, an active power input unit and a backup power input unit, the tilting actuation unit comprises a ball screw and a screw nut used in cooperation with the ball screw. The driving power input unit comprises a driving power input unit shell, driving power input equipment, a planetary gear train in transmission connection with an input shaft of the driving power input equipment and a first triple gear in transmission connection with the planetary gear train. The backup power input unit comprises a backup power input unit shell, backup power input equipment, a second triple gear in transmission connection with an input shaft of the backup power input equipment, and a worm and gear mechanism in transmission connection with the second triple gear; the problems that an existing tilting actuation system of the tilting rotor aircraft is poor in operability, low in control efficiency, poor in stability and prone to system failure, and consequently the flight safety cannot be guaranteed are solved.

The invention discloses a power-interruption-free gear-shifting hub motor two-gear transmission of a duplex planetary compound gear train. The power-interruption-free gear-shifting hub motor two-gear transmission is mainly composed of a driving motor; a first planetary gear train; a second planetary gear train; a controllable one-way clutch; a clutch; a central support shaft; and a transmission shell and the like. The first planetary gear train is a duplex planet compound planetary gear train with small characteristic parameters. An output shaft of the driving motor is connected with the first sun gear; the first right planet carrier is connected with the second sun gear; the second planet carrier is connected with wheels; the controllable one-way clutch is used for connecting the first gear ring and a transmission shell, and a one-way locking state, a two-way locking state or a two-way overrunning state can be achieved. The clutch is used for connecting the drive motor output shaft and the first left planet carrier. According to the hub motor two-gear transmission, seven different running states including first-gear driving, second-gear driving, neutral gear, reversing, first-gear regenerative braking, second-gear regenerative braking and low-speed sliding friction braking can be achieved through the control clutch and the controllable one-way clutch.

The invention discloses an aero-engine gear high-cycle fatigue reliability analysis method, which takes a certain aero-engine gear transmission system as an object, and establishes a gear finite element model by using an ANSYS parameterized design programming language; the method comprises the steps that after test data are obtained, an active learning Kriging proxy model is adopted to obtain a proxy finite element model, then the gear proxy finite element model is corrected through a QMC-based gradient deceleration particle swarm algorithm, and a corrected high-precision finite element model is obtained; in consideration of the influence of the uncertainty of the size, the material and the load on the reliability of the gear, fitting an S-N curve by adopting gear contact fatigue test data; then, correcting the S-N curve and establishing a life-based tooth surface contact fatigue limit state function; and finally, performing reliability analysis in combination with the corrected high-precision finite element model.

A first sliding rail and a second sliding rail are arranged in a wheel rim of the steering wheel, a motor and a gear transmission mechanism are arranged in a steering column of the steering wheel, and one end of a first sliding sleeve structure and one end of a second sliding sleeve structure are connected with the output end of the gear transmission mechanism; the tail ends, located in the steering wheel rim, of the first sliding sleeve structure and the second sliding sleeve structure are provided with a first supporting tool and a second supporting tool respectively. The gear transmission mechanism is driven by the motor to rotate, then the first sliding sleeve structure and the second sliding sleeve structure are driven to slide on the first sliding rail and the second sliding rail correspondingly, when sliding to the tail ends of the sliding rails, the first supporting tool and the second supporting tool can be pushed out to a steering wheel rim, and the supporting tools increase an acting point for the palm; and the problem of unstable holding caused by incomplete thumb tail joint and insufficient thumb strength of a driver is solved.

The invention discloses a bevel angle transmission marine gear transmission device, which relates to the technical field of gear transmission, and comprises a box body, an input component, a transmission component and an output component, an ahead running transmission gear is fixed to an input shaft of the input component, and an ahead running driving gear with a clutch and a piston is installed on the input shaft in an empty sleeving mode. And a reversing transmission gear is fixed on a transmission shaft of the transmission part. The invention belongs to the breakthrough of the prior art, and can meet the requirements of inclination of an input shaft, a reversing shaft and an output shaft of a gear box by utilizing the displacement principle of gears with different center distances and the meshing transmission principle of crossed shaft gears. Gears on the three shafts can be mutually meshed and effectively work, the requirement that the high-speed boat inclines relative to the water surface when advancing on the water at a high speed is met, the diesel engine and the gear box are horizontally arranged in the cabin, the output shaft of the gear box outputs at a certain oblique angle, the structure is reliable, the process is easy to implement, and the high-speed boat has the advantages of being reasonable and compact in structural arrangement, high in transmission efficiency, low in cost and the like. And the weight is light.

The utility model provides an asphalt paving device for municipal road construction, which relates to the technical field of asphalt paving and comprises a rotating seat, an air outlet head is fixedly mounted at the bottom of the rotating seat, a transmission gear is fixedly mounted in the middle of the rotating seat, the transmission gear is meshed with a driving gear set, and a distributing scraper is arranged on one side of the air outlet head. Compared with the prior art, the air blowing device has the advantages that the air blowing structure capable of being rotationally adjusted is arranged in front of the asphalt paving structure, the motor is controlled to output power according to the asphalt paving requirement, the air outlet structure is driven by gear transmission to adjust the direction, and meanwhile, the air outlet structure and the fan are connected through the supporting structure capable of rotating; according to the device, the air outlet direction can be continuously adjusted according to the use requirement, then the air blowing range is enlarged, dust on the ground is blown to the position far away from municipal road construction asphalt paving, it is guaranteed that asphalt paving is clean, and the asphalt paving quality is improved.

The invention discloses a distributed K-H-V type involute joint module with a small tooth difference. The distributed K-H-V type involute joint module is applied to a joint on a snakelike mechanical arm. The joint module is composed of three sets of rotary driving units, a rack, an inner gear and an outer gear, in the transmission process, the eccentric shaft rotates to drive the inner gear to output at the rotating speed, and then the outer gear translates. The three groups of rotary driving units are respectively mounted in through holes formed in the inner gear and the outer gear at equal intervals; the rotary driving unit is matched with a bearing, an outer gear and an inner gear through a small motor, so that the space utilization rate of the joint module is increased; and in addition, by reducing transmission links, the power loss of the joint module is reduced, so that the joint module has the characteristics of small size and high output efficiency on the basis of having the characteristics of high rigidity and large transmission ratio of involute small tooth difference planetary gear transmission.

The invention discloses a lifting device and method for storage and transfer of an airship pod, and relates to the technical field of storage and transfer of airship pods.The lifting device comprises an upper bracket, two lifting driving assemblies, a middle support, a damping spring, a base, four wheels and a traction rod; through the modular truss structure design, the bearing capacity and the lightweight requirement are both considered; a multi-dimensional vibration reduction system is formed by the vibration reduction springs which are arranged horizontally, longitudinally and transversely and the soft rubber buffer cushion, and the structure and function integrity of the pod in the storage and transfer process can be effectively protected by matching with the flexible moving and locking functions of the universal wheels with brakes; the lifting driving assembly adopts worm and gear transmission to achieve stable lifting and + / -15-degree pitch angle adjustment, an operating hand wheel designed in an ergonomic mode is combined, electric drive is matched, and the requirement for precise adjustment and control of pods is met. And the operation efficiency is greatly improved through the quick disassembly and assembly design of the positioning and fixing assembly and the traction rod.

The invention discloses a calculation method and system for dynamic response of a deceleration drive assembly under multi-source excitation, and the method comprises the following steps: building a kinetic equation of a gear transmission system based on an overall stiffness matrix, a mass matrix and a damping matrix of the gear transmission system, and carrying out the calculation to obtain a dynamic flexibility matrix of the gear transmission system; establishing a hub motor deceleration driving assembly shell finite element model, and obtaining a system overall kinetic model based on the assembly shell finite element model and the gear transmission system kinetic equation; calculating the dynamic meshing force of the gear as the mechanical excitation of the system; calculating the radial electromagnetic force of the permanent magnet synchronous motor under the no-load and load working conditions as the electromagnetic excitation of the system; mechanical excitation and electromagnetic excitation are loaded to the gear transmission system, and vibration displacement response, speed response and acceleration response at each node of the system are calculated in combination with the dynamic flexibility matrix. According to the invention, the vibration characteristics of the deceleration driving assembly in the actual operation process can be comprehensively and truly reflected.

The utility model relates to an electric sunshade curtain with a gear box device, which comprises a motor providing a power source, the motor transmits power to a driving wheel through a connecting rod, the driving wheel is meshed with a driven wheel in a gear box to transmit power, and the gear box comprises a box body serving as a shell. A bearing seat for accommodating a first rolling bearing on the synchronizing wheel is arranged on the inner wall of the box body, the synchronizing wheel is provided with a power transmission cavity, the power transmission cavity is connected with a transmission shaft of the driven wheel, the driven wheel is provided with an inner gear and a second step circular surface, and a second rolling bearing is assembled on the second step circular surface; the second rolling bearing is positioned through a bearing supporting ring of an upper cover plate, and the upper cover plate is connected with the box body through screws. According to the novel internal structure of the gearbox, due to the fact that gear transmission is of an internal meshing structure, certain inclusiveness is achieved, even if the internal structure changes greatly, normal rotation can be maintained, the gear penetration depth is high, and the mute performance is good.

The invention discloses a transmission system bearing interface modeling method and system and a storage medium, and relates to the technical field of gear transmission. The method comprises the following steps: establishing a three-dimensional model of a bearing interface, and performing grid division on a fluid domain in the three-dimensional model of the bearing interface; a simulation working condition is determined, a fluid domain of a bearing interface is modeled by adopting a VOF model, and a phase interface in multiphase flow in the gear transmission is captured; modeling a solid domain of a bearing interface by adopting a thermal network model, and dispersing the solid domain part into a plurality of temperature nodes; on the basis of gear dynamics, friction heat generation of a gear pair is calculated, and a heat source in a meshing state is obtained and applied to a heat network model for simulation calculation; and packaging the modeled bearing interface model into an analysis system, and calculating the heat source of the bearing interface through an integrated calculation method. According to the invention, reference can be provided for the research process of temperature change and multiphase flow behavior of the transmission gear, and the research efficiency is improved.

The invention discloses a longitudinal tension test load device for a super-tonnage lifting hook and a test method.The longitudinal tension test load device comprises a foundation bearing platform, a load test cabin is arranged on the top face of the foundation bearing platform, and a plurality of lifting lugs used for lifting are fixedly installed on the top face of the load test cabin; a servo driving motor, a precise ball screw, a longitudinal sliding base, a main loading hydraulic cylinder, an adjustable supporting frame, a sliding type bearing frame, a main locking connecting rod, a connecting rod supporting frame, a gear transmission block, a fan-shaped meshing gear, a driven connecting rod mechanism, a self-adaptive clamping module, a lateral mounting flange and a self-locking limiting plate are matched with one another; the position of the adjustable supporting frame on the hook claw can be adjusted for multiple tests, the industrial endoscope can detect cracks on the surface of the hook in the test process, the laser displacement sensor can monitor deformation of the claw, a worker detects flaws of the hook through the ultrasonic flaw detector, and the test effect on the hook is achieved.

The invention relates to a wheel and paddle coaxial amphibious robot and a using method thereof, and belongs to the technical field of robot aircrafts. Comprising a fuselage, four deformation modules, connecting rods and an air-ground execution mechanism, the four deformation modules are evenly arranged on the fuselage, the deformation modules are connected with the air-ground execution mechanism through the connecting rods, and the deformation modules are used for controlling position change of the air-ground execution mechanism, so that conversion between a land mode and an unmanned aerial vehicle mode is achieved. The coaxial design that the wheel motor directly drives the wheel is adopted, compared with other gear transmission and synchronous belt transmission for driving the wheel, errors and friction loss caused by transmission are avoided, and meanwhile the situation that the mass is reduced due to the use of a bearing is avoided; the design of the channel in the center of the sleeve further provides convenience for line arrangement of the blade motor, and the problem of line winding is effectively solved through the fixing mode of the blade motor base.

The utility model discloses an electromagnetic double clutch type power mechanism, which comprises a motor and an electromagnetic transmission mechanism, the structure of the electromagnetic transmission mechanism comprises a fixing ring, two electromagnetic coils are arranged on the fixing ring in parallel, an armature is fixedly arranged on the outer side of each of two opposite ends in the axial direction of the fixing ring, and a clutch outer core is axially fixed with the fixing ring. A fast-gear clutch assembly and a slow-gear clutch assembly are arranged in the clutch outer core side by side in a circumferential transmission mode, and an inner shifting structure acting on the fast-gear clutch assembly and the slow-gear clutch assembly is arranged in the clutch outer core. A fast gear and slow gear transmission set in transmission connection with the transmission shaft is arranged in the clutch outer core and used for achieving fast gear and slow gear switching transmission. And the electromagnetic force of the two electromagnetic coils realizes the axial sliding of the clutch outer core, so that the fast-gear clutch assembly and the slow-gear clutch assembly are staggered for separation and reunion.