277results about How to "Reduce axial size" patented technology

The invention relates to a motor driving assembly and a vehicle. The motor driving assembly comprises a shell, a driving motor, a speed reducer and a lubricating system. The shell is internally provided with a motor cavity and a speed reduction cavity, the driving motor is arranged in the motor cavity, the driving motor comprises a stator winding and a rotor, the rotor penetrates through the stator winding and is rotationally connected with the shell, the speed reducer is arranged in the speed reduction cavity and is connected with the rotor, and the motor is arranged in the speed reduction cavity. The lubricating system comprises a main oil supply way and a first branch way which are arranged in the shell, the main oil supply way is arranged on one radial side of the shell and communicated with the stator winding, the first branch way is arranged between the motor cavity and the speed reduction cavity, one end of the first branch way is communicated with the main oil supply way, and the other end of the first branch way is communicated with the speed reduction cavity. And the other end of the first branch is communicated with the speed reduction cavity. The motor driving assembly is compact in structure, and the axial size of the motor driving assembly can be reduced.

The invention provides a split type shielding electric gear pump and a cooling method thereof, and can solve the problems that a motor and a gear pump of an existing integral type shielding electric gear pump cannot be independently assembled, the motor and the gear pump cannot be integrally decomposed, so that the gear pump is inconvenient to independently carry out a running-in test, and the gear pump leaks. The electric gear pump comprises a gear pump body and a motor, the gear pump body comprises a pump shell and a pump shaft, the motor comprises a machine shell, a stator and a rotor, one end of the pump shell is connected with one end of the machine shell through a sealing end face, air gaps are formed among the rotor, the stator and the machine shell, the input end of the pump shaft extends out of the pump shell and extends into the machine shell, and a leakage gap is formed between the input end of the pump shaft and the pump shell. The input end of the pump shaft is coaxially connected with one end of the rotor, the rotor is provided with an axially-through motor backflow channel, the pump shaft is provided with an axially-through gear pump backflow channel, and the space in the pump shell, the leakage gap, the air gap, the motor backflow channel and the gear pump backflow channel form a working medium cooling loop.

The utility model relates to the technical field of transmission systems, and discloses a planetary reducing mechanism and a mechanical transmission device. The planetary speed reducing mechanism comprises a shell, a sun wheel assembly, a planet wheel assembly and an oil filling pipe. An oil return cavity is formed in the shell; the sun gear assembly is rotatably arranged in the shell; the planet wheel assembly is rotatably arranged in the oil return cavity, a lubricating runner is formed between the planet wheel assembly and the sun wheel assembly, an oil outlet of the lubricating runner is located on a planet shaft of the planet wheel assembly, the planet wheel assembly is further connected with an output shaft, the output shaft is provided with a first shaft hole extending in the axial direction, and the first shaft hole is communicated with an oil inlet of the lubricating runner; the oil injection pipe is inserted into the first shaft hole. According to the planetary speed reducing mechanism, active lubrication and passive lubrication are integrated, the lubrication effect is improved, the use amount of lubricating oil is reduced, oil guide parts do not need to be introduced, the overall structure is simple, and the cost is reduced.

The utility model provides a distributed electric drive system and a vehicle, the distributed electric drive system comprises a speed reducer, two opposite sides of the speed reducer are correspondingly provided with a first input end and a second input end; the first driving device and the second driving device are located on the two opposite sides of the speed reduction device, the first driving device is connected with the first input end, and the speed reduction device, the first driving device and the second driving device define a containing space; the controller is provided with a first installation part, and the first installation part is arranged in the containing space and corresponds to the speed reduction device up and down. According to the distributed electric drive system, the first driving device and the second driving device protrude upwards relative to the speed reduction device, so that the groove capable of being provided with the first mounting part is formed between the speed reduction device and the first driving device and the second driving device which are located on the two sides, and on one hand, the height size of the distributed electric drive system is reduced; direct connection between a motor three-phase line of the driving device and a controller copper bar is facilitated, and the copper consumption is greatly reduced.

An integrated electric wheel with a cooling function comprises a hub motor with a cooling water channel, a planetary reducer connected with a rotating shaft of the hub motor, a hub connected with the output end of the planetary reducer and a brake fixed to the hub, and is characterized in that the cooling water channel in the hub motor extends forwards to the periphery of the planetary reducer; and the planetary reducer is circularly cooled, and an oil guide assembly for collecting oil liquid thrown out in the circumferential direction and conducting lubricating and heat dissipation on the planetary reducer is assembled on the planetary reducer. Lubricating and radiating efficiency of parts close to the center of the speed reducer is effectively improved, temperature rise and part abrasion in the speed reducer are slowed down, the probability of abnormal transmission caused by bearing sintering and gear abrasion due to high temperature is effectively reduced, transmission reliability of the planetary speed reducer is improved, and the service life of the planetary speed reducer is prolonged. Integrated optimization of multiple structures of the electric wheel is formed, the integration degree is improved, whole vehicle arrangement is facilitated, the power density of the electric wheel is improved, and the cruising ability of the electric wheel is improved.

The invention discloses an axial magnetic flux shaftless rim propeller which comprises a machine shell, a rotor and two annular stators, the rotor is located in the machine shell, the rotor and the machine shell are connected through a water lubrication radial bearing, the two annular stators are arranged on the two sides of the rotor respectively, and water lubrication thrust bearings are arranged between the annular stators and the rotor respectively. According to the shaftless rim propeller, the axial size is reduced, the axial magnetic pulling force is balanced, compared with a radial magnetic flux shaftless rim propeller, larger torque output can be provided under the same size, and the output power of a motor is improved. In addition, the shaftless motor structure reduces the axial size of the ship propeller, provides sufficient space for arrangement of thrust bearings, remarkably reduces friction and abrasion, reduces noise, effectively improves the performance of the motor, prolongs the service life of the motor, and further improves the operation stability and efficiency of the motor.

The invention provides a centralized lubrication electric drive axle which comprises an axle housing, and driving parts are fixedly arranged at the two ends of the axle housing. The cooling and lubricating system is used for cooling and circulating lubricating oil; an oil bottom box is fixedly arranged on the axle housing, an oil suction port is formed in the bottom of the oil bottom box and communicated with an inlet of a cooling and lubricating system through a pipeline, and an outlet of the cooling and lubricating system is communicated with oil inlets of driving components on the left side and the right side through oil inlet pipes respectively. An oil return pipe for communicating the oil outlet of the driving part on each side with the oil bottom box is arranged in the oil bottom box; when the axle housing inclines, the oil return ports of the two oil return pipes are located above the oil surface of the oil bottom box all the time, and the oil suction port is located below the oil surface all the time.

The invention relates to the technical field of robots, in particular to a joint module and a robot, and solves the problem that the torque of the joint module is still small under certain size limitation. The joint module comprises a motor shell, a center shaft, a first sun gear, a plurality of first planet gears, an inner gear ring, a first planet carrier, a rotor, a connecting sleeve and a stator. The rotor is arranged on the inner ring of the stator, the stator is fixedly connected with the motor shell, only a gap needs to be reserved between the rotor and the stator, and the radial size of the joint module is reduced. In addition, the rotor is arranged on the outer sides of the first sun gear and the first planet gear in a sleeving mode, the rotor and the first sun gear are connected through the connecting sleeve, and the axial size of the joint module is reduced. Namely, the radial size and the axial size of the joint module are reduced, and the torque capable of being borne by the joint module can be increased under the condition that the space of the joint position of the humanoid robot is limited.

The invention discloses a high-power air compressor and a using method thereof, and relates to the technical field of air compressor equipment, the high-power air compressor comprises a main tank body, a main motor, a main rotating shaft, a first air compressor, a second air compressor, an auxiliary motor and an auxiliary rotating shaft, the first air compressor and the second air compressor are arranged on the two sides of the main motor and are in transmission connection with the main rotating shaft, the auxiliary rotating shaft is arranged at the side end of the main rotating shaft, the axis of the main rotating shaft and the axis of the auxiliary rotating shaft are located on the same straight line, and the main rotating shaft and the auxiliary rotating shaft are connected through a coupler. The auxiliary motor is arranged on the auxiliary rotating shaft and is in transmission connection with the auxiliary rotating shaft, the air outlet end of the first air compressor and the air outlet end of the second air compressor are communicated to the main tank body, and the main motor and the auxiliary motor simultaneously drive the first air compressor and the second air compressor to operate, so that the operation power of equipment is improved.

The invention provides an actuator, a joint module, a mechanical arm, a biped robot, a quadruped robot, a quadruped robot, a humanoid robot and a robot. The actuator comprises a shell, a motor assembly and a speed reducer assembly, the shell comprises an outer shell part, a first extension part and an inner cylinder part, and a first containing cavity with an opening is defined; the motor assembly is composed of a rotor, a stator, a rotor adapter and a rotary supporting assembly, the rotor adapter is provided with a rotor connecting part, a second extending part and a first connecting shaft part and is connected with the rotor, the rotor and the stator are arranged in the first containing cavity, and the rotary supporting assembly is arranged between the first connecting shaft part and the inner cylinder part; an input end transmission shaft of the speed reducer assembly is connected with the first connecting shaft part and rotates along with the rotor adapter, the second extension part is close to the speed reducer assembly, and the first extension part is far away from the speed reducer assembly relative to the second extension part. According to the invention, the transmission precision of the actuator and the stability of power output are ensured while the small size and compactness of the actuator are realized.

The utility model provides a single-stator double-rotation axial magnetic flux motor, which comprises a stator assembly and a rotor assembly, the stator assembly comprises an inner side shell, an outer side shell and a stator mounting frame arranged between the inner side shell and the outer side shell, the inner side wall of the inner side shell is provided with a bearing chamber, and the inner periphery of the bearing chamber protrudes to form an annular boss; a first angular contact bearing is arranged on one side of the annular boss, a second angular contact bearing is arranged on the other side of the annular boss, and the first angular contact bearing and the second angular contact bearing are arranged oppositely; the rotor assembly comprises a rotating shaft, a first rotor disc and a second rotor disc, the rotating shaft penetrates through the first angular contact bearing and the second angular contact bearing, and the first rotor disc and the second rotor disc are connected with the two opposite ends of the rotating shaft respectively. The bearing chamber is arranged in the inner side shell, the space in the center of the stator assembly is fully utilized, the axial size of the motor is reduced, the two angular contact bearings are arranged oppositely, axial loads caused by rotation of rotors at the two ends of the rotating shaft can be effectively balanced and dispersed, and the service life of the motor is prolonged.

The invention relates to the technical field of external valves of automobile shock absorbers, and discloses a pilot valve which comprises a liquid passing cover, a special-shaped gasket is connected to the lower portion of the liquid passing cover, an oil passing groove is formed in the special-shaped gasket, the oil passing groove is of a cross structure, and the end of the cross groove is the end of the special-shaped gasket. According to the pilot valve, the oil passing groove is additionally formed in the special-shaped gasket and penetrates through the special-shaped gasket, compared with an existing oil passing groove, the area of the oil passing groove is larger, the oil passing speed is higher, liquid flowing is more convenient, the overall end cap is reduced by 1.5 mm, the axial size occupied by an external valve is further reduced, the rigidity of the special-shaped spring piece is improved, and the service life of the pilot valve is prolonged. According to the pilot valve connector, a pilot valve and a connector are combined into a whole, on the premise that the performance is met, the axial size is reduced, a belleville spring and two special adjusting washers are added, and the better damping effect of the shock absorber is obtained.

The present invention discloses a planetary gear reducer with a large-caliber hollow structure, which solves the problem that when the existing planetary gear reducer is applied to a robot, the robot's cables cannot be built-in, resulting in a large device volume, and the existing reducer has a large axial size and weak rigidity. The reducer uses an end cover to axially position the planetary wheel of the first-stage planetary gear reduction mechanism, the current-stage planetary carrier axially positions the planetary wheel bearing, and the upper-stage planetary carrier axially positions the first external tooth of the next-stage sun wheel. At the same time, the same-stage planetary wheel and the planetary carrier directly contact each other to achieve mutual axial positioning; the reducer realizes power input from one side and output from the other side through the cooperation between the hollow sleeve, the input gear and the sun wheel of the first-stage planetary gear reduction mechanism, and the internal cavity of the hollow sleeve, the central through hole of each stage sun wheel and the through hole set in the center of the planetary carrier are connected in sequence, thereby forming a hollow structure for passing the line.

The clamping mechanism comprises a chuck body and four sets of air cylinders evenly arranged in the circumferential direction, and piston rods of the air cylinders are arranged in the radial direction of the chuck and fixedly installed at the front end of the chuck body. A clamping jaw assembly is fixedly installed on the cylinder body, an organ protective cover is connected between the cylinder body and the end of the piston rod, two synchronous gear rings are coaxially arranged at the rear end of the chuck body, and the cylinder bodies of the two adjacent air cylinders are in transmission connection with the two synchronous gear rings correspondingly. And therefore, the two groups of symmetrically arranged air cylinders synchronously act through the same synchronous gear ring. According to the embodiment, the power source is externally arranged, the internal space of the chuck is saved, meanwhile, later maintenance is facilitated, the power source is directly connected with the clamping execution end, transmission loss is avoided, larger clamping force is achieved, meanwhile, a sliding block structure is avoided, and the phenomenon of sliding clamping stagnation is eradicated.

The invention discloses a straddle type monorail train bogie and a straddle type monorail train. The straddle type monorail train bogie comprises a framework assembly, a walking wheel assembly, a driving system and a fixing assembly, the walking wheel assembly comprises walking wheels and wheel axles, the wheel axles, the driving system and the walking wheels are integrated into a whole, and the fixing assembly is arranged on the framework assembly; the driving system directly drives the walking wheels to rotate, a transmission system is omitted, and the overall mass of the bogie is reduced; the fixing assembly and the fixing beam of the framework assembly detachably clamp the wheel shaft, the driving system and the walking wheel, and the wheel shaft is located on the lower side of the fixing beam, so that under the condition that the fixing assembly is separated from the fixing beam, the wheel shaft can drive the driving system and the walking wheel to be synchronously separated from the framework assembly from the lower side of the fixing beam, the framework body does not need to be disassembled, and the operation is convenient. The walking wheel assembly and the driving system can be disassembled by disassembling the walking wheel assembly and the driving system, then the walking wheel is disassembled, the mode that the wheel is discharged downwards in the vertical direction is achieved, the walking wheel is disassembled without being disassembled and replaced, the wheel replacing time is saved, and the wheel replacing efficiency is improved.

The utility model belongs to the technical field of shield pumps, and relates to a mounting structure of a motor shaft of a shield pump, which comprises a shield sleeve, a front bearing seat and a rear bearing seat, a front bearing is arranged in the front bearing seat, a rear bearing is arranged in the rear bearing seat, the motor shaft is assembled in the front bearing and the rear bearing, a dynamic limit component is sleeved at the front end of the motor shaft, and the shield sleeve is sleeved at the rear end of the motor shaft. The dynamic limiting assembly comprises a wear-resisting gasket and a special-shaped check ring, the wear-resisting gasket is located on the outer side of the front bearing seat, the special-shaped check ring is located on the outer side of the wear-resisting gasket and forms an axial limiting structure of the wear-resisting gasket, and a gap is reserved between the wear-resisting gasket and the outer end face of the front bearing seat when the shield pump works. And when the motor shaft moves backwards, the wear-resistant gasket is in abutting connection with the outer end face of the front bearing seat to form an axial limiting structure. The installation structure of the motor shaft of the shield pump can prevent faults of the shield pump caused by over-limit movement of the motor shaft.

The invention relates to a relativistic magnetron for full-cavity extraction and radial output, and belongs to the technical field of high-power microwaves, the relativistic magnetron comprises an anode, a cathode and a magnet, the anode comprises an anode block and an anode shell, a fan-shaped waveguide and a rectangular waveguide are arranged on the periphery of the anode shell, and the rectangular waveguide is arranged in the radial direction of the anode shell; the fan-shaped waveguide is provided with two short-circuit surfaces in the axial direction of the anode shell, one end of the rectangular waveguide is connected with one short-circuit surface of the fan-shaped waveguide, and the technical problems that in the prior art, the periodic symmetry of an interaction area is poor, the inner diameter of a magnet is large, and light and small size cannot be achieved can be solved.

The utility model relates to a material high utilization rate type stepping motor rotor assembly and a stepping motor thereof, the stepping motor rotor assembly comprises a rotating shaft, three rotor iron cores are fixed on the rotating shaft in sequence, and the magnetic pole of the rotor iron core in the middle is opposite to the magnetic poles of the rotor iron cores on the two sides. According to the scheme, a rotor structure is changed from a conventional two-section four-iron-core structure with a magnetic isolation sheet in the middle into a two-section three-iron-core structure without a magnetic isolation sheet in the middle, so that the axial size of the motor is reduced, the height of the stator iron core is reduced, and the height of a motor body is reduced. Under the condition that used materials are reduced, the same output torque performance is achieved, the product material cost is reduced, and the use and installation space of customers is reduced.

The utility model discloses a dual-motor driving system which comprises a first motor and a second motor which are vertically arranged, the first motor and the second motor are close to each other, motor shafts of the first motor and the second motor are arranged in a back-to-back mode, and the motor shaft of the first motor is in transmission connection with a first output shaft through a first transmission assembly. A motor shaft of the second motor is in transmission connection with a second output shaft through a second transmission assembly, the first output shaft and the second output shaft are coaxial, and the distance between the first output shaft and the motor shaft of the first motor is equal to the distance between the second output shaft and the motor shaft of the second motor. The utility model has the advantages that: the layout is reasonable, the radial arrangement of the first motor and the second motor can greatly reduce the axial size, reduce the occupied arrangement space of the chassis structure, and can give consideration to the dynamic property and economical efficiency of the whole vehicle to the greatest extent. According to the design, the requirement for the space of the whole vehicle is low, and wide applicability is achieved.

According to the non-magnetic stator tooth high-temperature superconducting synchronous phase modifier and the determination method, a plurality of superconducting excitation windings are arranged between a rotor magnet yoke and a superconducting shielding layer along the circumferential array of the rotor magnet yoke, and each superconducting excitation winding is connected with a superconducting excitation winding cooling structure and an excitation winding structure wound by a high-temperature superconducting strip; the superconducting excitation winding cooling structure is arranged on the excitation winding to maintain the excitation winding to operate stably at the set temperature, so that active power loss and temperature rise of the excitation winding are avoided, the superconducting excitation winding has high excitation capacity, the air gap magnetic flux density of the high-temperature superconducting synchronous phase modifier is as high as 1.6 T, and the high-temperature superconducting synchronous phase modifier can be applied to the high-temperature superconducting synchronous phase modifier. Therefore, when the radial sizes are roughly the same, the axial size of the high-temperature superconducting synchronous phase modifier can be greatly reduced, and under the condition of the same power, the axial size of the high-temperature superconducting synchronous phase modifier is about one half of that of an existing synchronous phase modifier, and miniaturization of the synchronous phase modifier is facilitated.

The invention relates to the technical field of hydraulic systems, in particular to a pump device. A pump device includes: a first pump; the second pump and the first pump are coaxially arranged; the intermediate body is located between the first pump and the second pump and connected with the first pump and the second pump into a whole, and pump shafts of the first pump and the second pump extend into the intermediate body to be linked; and the number of the displacement adjusting mechanisms is two, the two displacement adjusting mechanisms are arranged corresponding to the first pump and the second pump respectively, and the displacement adjusting mechanisms are arranged perpendicular to the axial direction. According to one embodiment of the invention, the two displacement adjusting mechanisms are located on the same side of the first pump and the second pump, and the two displacement adjusting mechanisms are arranged in a mirror image mode. The technical problems that in the prior art, a double-pump structure is large in axial length and inconvenient to install and debug are solved.

The invention relates to the technical field of robots, and provides an actuator, a joint module, a joint arm, a biped robot, a quadruped robot, a four-wheel-foot robot, a humanoid robot and a robotic.The actuator comprises a shell roughly in a hollow cylindrical shape, a motor assembly and a speed reducer assembly, and the speed reducer assembly comprises an inner gear ring roughly in a hollow cylindrical shape; the inner gear ring is embedded in the shell and fixedly connected with the shell through a plurality of first fasteners, and the first fasteners are arranged in the radial direction of the shell so that the shell can be fixedly connected with the inner gear ring in the radial direction. The actuator can be set to be smaller in axial size and radial size, the requirements for compactness and miniaturization of products in the field of robots at present are met, meanwhile, matching and installation of the shell and the inner gear ring are facilitated, assembly errors are reduced, and the transmission precision and stability of the actuator are improved.

The invention discloses an electric turning gear and method for a diesel engine, the electric turning gear comprises a turning assembly, an electric control assembly and a handheld part, and the electric control assembly is arranged on one side of the turning assembly in the direction perpendicular to the axial direction of the turning assembly and connected with the turning assembly; the handheld part and the electric control assembly are arranged on the same side of the turning assembly, and the handheld part is connected with the turning assembly; the handheld part is arranged on the side, away from the output end of the turning gear assembly, of the electric control assembly. The electric control assembly and the handheld part are arranged on one side of the barring assembly along the side perpendicular to the axial direction of the barring assembly, so that the axial size of the barring device is effectively reduced, the barring device is more suitable for electric barring in a narrow space, the barring efficiency in the narrow space is effectively improved, and operation steps are simplified; and meanwhile, the handheld part can support a turning worker to hold the electric turning gear by hand for turning while the axial size of the electric turning gear is not increased, so that the application flexibility of the electric turning gear is further improved.

A vane pump fluid suction and discharge module with improved rotor radial bearing capacity is composed of a stator assembly and a rotor assembly, the rotor assembly is supported on the stator assembly through bearings on the two sides, the installation geometric accuracy, such as coaxiality, of the rotor assembly relative to the stator assembly is improved, the axial size of the module is greatly shortened, and the installation cost is reduced. And the radial force borne by the rotor acts on the stator assembly instead of acting on the transmission shaft, so that the transmission shaft only provides torque and does not bear the radial force, the working condition is greatly improved, and the service life is prolonged. The suction and discharge module for sucking the fluid from the low-pressure area of the pump chamber and discharging the fluid from the high-pressure area is small in size, high in efficiency and rapid and convenient to install, can be used for conveying gas to form a vacuum pump or an air pump, and can also be used for conveying liquid to form a water pump or an oil pump.

The invention discloses a coaxial planet row driving device for a vehicle. The coaxial planet row driving device comprises a shell, a power motor, a planetary reducer gear mechanism and a planet row differential mechanism. The power motor comprises a rotor assembly, a stator assembly and a rotor shaft; the planetary reducer gear mechanism comprises a first sun gear connected with the rotor shaft, a first planet carrier and a gear ring which are arranged in the shell, and a first duplex planetary gear set arranged on the first planet carrier; the rotor shaft, the planetary reducer gear mechanism and the planet row differential mechanism are coaxially arranged, a first output part and a second output part at the two ends of the rotor shaft are connected to the driving wheel, and the first sun wheel is in meshed connection with the first duplex planetary gear set. By designing the planetary reducer gear mechanism with coaxial input and output and the planetary row differential mechanism with parallel axis design, the axial and radial sizes of the driving device are shortened to the maximum extent on the basis of ensuring the gear performance, the miniaturization and light weight of the driving device are facilitated, and the applicability is greatly improved.

The utility model discloses a high-reliability small angular displacement potentiometer with a voltage conversion function, which comprises a shell, a cover plate, a voltage conversion circuit board, a rotating shaft, an external end bearing, a resistor body, an insulating sleeve, a collector ring, an electric brush, a resistor body lead and an output lead, a rotating shaft protruding ring is formed on the edge of the outer end of the large-diameter connecting part, a split washer is arranged at the position, close to the large-diameter connecting part, of the rotating shaft, the large-diameter connecting part is sleeved with the external end bearing, the inner ring of the external end bearing is located between the split washer and the rotating shaft protruding ring, and a bearing flange plate is arranged on the outer ring of the external end bearing. The bearing flange plate is located in a limiting groove formed between the shell and the cover plate. According to the utility model, the structure for limiting the external end bearing and the rotating shaft is improved, so that the function of effectively preventing the rotating shaft from axially moving can be realized only by adopting one external end bearing, the axial size and volume of the potentiometer are reduced, and the potentiometer is convenient to apply.

The invention discloses a short-distance winding stator and a motor, the short-distance winding stator comprises a stator winding and a stator core, the stator core comprises a plurality of stator slots, and each stator slot comprises 2N accommodating layers; the stator winding comprises a multi-phase winding structure, each phase winding structure comprises two parallel coil groups, each coil group comprises multiple coil structures with different spans and two lead structures, each coil structure comprises two connected coil conductor edges, and the two coil conductor edges are respectively inserted into adjacent accommodating layers of different stator slots; the plurality of coil structures of each coil group are sequentially wound from the first layer to the 2Nth layer of the accommodating layer; the two lead structures are arranged at the two ends of the corresponding coil assembly respectively and inserted into the first containing layer and the 2Nth containing layer, and the lead structures extend out from the crown end of the stator winding. According to the short-distance winding stator and the motor, the processing technology difficulty of the welding end is reduced, the axial size of the motor is reduced, the creepage distance is ensured, and motor arrangement is facilitated.

The present invention provides a dispersed-speed flexible motor, which includes a motor body, a continuously variable transmission and a reducer. The front end of the motor body is fixedly provided with a mounting seat, the front end of the motor body is rotatably provided with a motor rotor output shaft, the interior of the mounting seat is provided with a continuously variable transmission, the outer side of the mounting seat is fixedly connected to the reducer, one end of the continuously variable transmission is connected to the motor rotor output shaft, the other end of the continuously variable transmission is provided with an intermediate transmission shaft, and the continuously variable transmission is rotatably connected to the reducer through the intermediate transmission shaft. It has full-process flexible transmission performance. The dispersed-speed flexible motor can adaptively isolate the load during the startup process, so that it can be started with a light load, and no additional startup control device is required. During the operation, the transmission mode can also be adaptively adjusted according to the change of the load. The present invention can be widely used in the selection of motors in various transmission fields, and can provide flexible motors with various dispersed-speed outputs.

The invention provides a flat wire motor, a power assembly and an electric vehicle. A stator of the motor comprises a stator iron core and a stator winding, each winding groove and a center hole of the stator iron core penetrate through the two end faces of the stator iron core in the axial direction of the stator, the center hole is used for containing a rotor, and a groove opening of each winding groove faces the center hole. Each flat wire of the stator winding comprises two leading-out ends, a plurality of straight line sections and a plurality of bridging sections, each straight line section is arranged in one winding groove, two ends of each bridging section are respectively used for connecting two straight line sections in different winding grooves, and each leading-out end is connected with one straight line section. A part of the bridging section in each flat wire is exposed out of one end face in the axial direction of the stator, and the two ends of each bridging section in the part of the bridging section are connected with the two straight line sections through the two connecting sections respectively. Along the circumferential direction of the stator iron core, the line width of each connecting section is smaller than the notch width of each winding groove, and the notch width of each winding groove is smaller than the in-groove width and the line width of each straight line section or each bridging section.

The invention relates to a microwave source device in the technical field of high-power microwaves, in particular to an L-band compact relativistic Cerenkov microwave generating device, and belongs to the technical field of high-power microwaves. Comprising a cathode structure, an external electromagnetic structure and an internal electromagnetic structure, and the cathode structure comprises a cathode seat and a cathode; the external electromagnetic structure comprises an anode outer cylinder, an outer cut-off neck, outer conductor ripples, a collector, a collector baffle and a solenoid coil; the internal electromagnetic structure comprises an inner cut-off neck, an inner conductor ripple, a short circuit block and a microwave output port; the whole structure is rotationally symmetrical about a central axis; through reasonable design of an electromagnetic structure, a coaxial non-uniform double-ripple slow-wave structure is adopted to enhance beam-wave coupling, a high-efficiency beam-wave effect is realized in a relatively short period, and a coaxial collector structure is adopted to improve the resonance characteristic of the slow-wave structure to reduce the axial size, so that miniaturization and compactness of the device are realized.