CN110855073A - Outer rotor electric wheel integrated structure based on non-pneumatic tire and assembling method - Google Patents
Outer rotor electric wheel integrated structure based on non-pneumatic tire and assembling method Download PDFInfo
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- CN110855073A CN110855073A CN201911140935.9A CN201911140935A CN110855073A CN 110855073 A CN110855073 A CN 110855073A CN 201911140935 A CN201911140935 A CN 201911140935A CN 110855073 A CN110855073 A CN 110855073A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K7/00—Disposition of motor in, or adjacent to, traction wheel
- B60K7/0007—Disposition of motor in, or adjacent to, traction wheel the motor being electric
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/006—Structural association of a motor or generator with the drive train of a motor vehicle
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
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- Combustion & Propulsion (AREA)
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- Braking Arrangements (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
Abstract
The invention discloses an outer rotor electric wheel integrated structure based on a non-pneumatic tire and an assembly method. The hub motor mainly comprises a stator core, a stator winding, a rotor core, a permanent magnet and a stator support frame; the power coupling mechanism and the speed reducing mechanism are the same planetary mechanism and are designed in the motor, the structure of the motor mainly comprises a rotor core, a planetary gear, a gear ring, a planetary carrier and an integrated rim, the power mode can be switched, and the economical efficiency and the dynamic property of the vehicle are both considered. The brake is a disc brake, and the integrated rim is connected with the brake disc; the cooling mechanism adopts an oil duct for cooling, the stator support frame is provided with the oil duct, and the cooling of the stator winding is indirectly completed through the cooling of the stator support frame; the non-pneumatic tire effectively avoids the defects of easy tire puncture and tire burst of the traditional pneumatic tire. The system can be used for various pure electric vehicle types and can also be used for hybrid vehicle types of the vehicle types.
Description
Technical Field
The invention relates to an electric automobile driving system, in particular to an outer rotor electric wheel integrated structure based on a non-pneumatic tire and an assembling method.
Technical Field
With the increasing severity of environmental problems and the gradual scarcity of petroleum, the electric vehicle has the great advantages of energy conservation and environmental protection, and the hub motor driving mode that the hub motor is arranged in the wheel is beneficial to the electric operation, integration and space arrangement rationalization of the electric vehicle in recent years.
The conventional hub motor driving system is designed integrally based on a conventional pneumatic tire, and compared with the conventional pneumatic tire, the non-pneumatic tire is simple in structure, has a large tire body, can absorb jolts from the ground through deformation of the tire body, has a good vibration reduction effect, and has high wear resistance and ground gripping performance. The non-inflatable tire does not need to be inflated, so that the danger of air leakage and tire burst is avoided, and the life and property safety of people is effectively ensured. The stator core and the rotor core are both disc-shaped hub motors, and have the advantages of high power density, high torque density, high efficiency and high integration level.
Based on the advantages of the non-pneumatic tire and the hub motor with the disc-shaped stator and rotor cores, the invention provides a design and assembly method of an outer rotor electric wheel integrated structure based on the non-pneumatic tire, which considers the sealing, cooling and braking of the electric wheel, and a planetary gear mechanism is designed inside the electric wheel, namely a power coupling mechanism and a speed reducing mechanism of the electric wheel. The invention can switch different working modes according to the magnitude of the required torque of the vehicle, and gives consideration to the dynamic property and the fuel economy of the vehicle: when a vehicle needs larger torque and the two rotor iron cores rotate, power is coupled together through the planetary mechanism and transmitted to the integrated rim to drive the vehicle to run, and the planetary mechanism has three degrees of freedom at the moment and can realize the regulation of the rotating speed of the planet carrier by regulating the rotating speeds of the two rotor iron cores; when the vehicle needs smaller torque, power is transmitted to the integrated rim from the right rotor core to drive the vehicle to run.
Disclosure of Invention
Aiming at the characteristics of the existing non-pneumatic tire structure, the hub motor, the power coupling mechanism, the speed reducing mechanism and the rim are integrally designed, the power coupling mechanism and the speed reducing mechanism are arranged in the motor, the braking system is arranged outside the motor, the problems of the arrangement of the hub space, the power coupling, the speed reducing, the braking, the cooling and the like are comprehensively considered, and the integrated hub driving electric wheel with high integration level, obvious speed reducing effect and high cooling speed is provided.
The purpose of the invention is realized by the following technical scheme:
the novel mechanism mainly comprises a hub motor, a power coupling mechanism, a speed reducing mechanism, a braking mechanism, a cooling mechanism and a non-pneumatic tire. The hub motor mainly comprises a stator core, a stator winding, a rotor core, a permanent magnet and a stator support frame; the power coupling mechanism and the speed reducing mechanism are the same planetary mechanism and are designed in the motor, and the structure of the motor mainly comprises a rotor core, a planetary gear, a gear ring, a planetary carrier and an integrated rim. The hub motor, the power coupling mechanism, the speed reducing mechanism and the rim are integrally designed: the half shaft is of a non-rotating structure, the spoke is designed into a sealing structure, two stator cores are respectively attached to two sides of a stator support frame, the stator support frame is fixed on the half shaft, a right rotor core is a sun gear of the planetary mechanism, a gear ring is designed outside the sun gear of the planetary mechanism and is meshed with a planetary gear, a left rotor core is connected with the gear ring through a connecting arm 1, a gear ring is designed outside a planet carrier of the planetary mechanism, a gear ring is also designed inside a rim, the gear ring inside the rim is meshed with the gear ring outside the planet carrier, the left side of the connecting arm 1 is connected with a brake disc 1 through a connecting arm 2, and the rotation of the left rotor core and the gear ring of the planetary mechanism is indirectly controlled through the control of the rotation of the; when a vehicle needs larger torque, the two rotor cores rotate, the power of the two rotor cores is input into the planetary mechanism through the sun gear and the gear ring respectively, the power is coupled and then transmitted to the integrated rim through the planetary frame to drive the vehicle to run, at the moment, the planetary mechanism has three degrees of freedom, and the rotating speed of the planetary frame can be adjusted by adjusting the rotating speeds of the two rotor cores respectively, so that the large-range adjustment of the transmission ratio is realized; when the vehicle needs smaller torque, the rotor core on the left side is braked by the brake, the gear ring of the planetary mechanism is also braked, power is transmitted to the planetary gear through the rotor core on the right side and is transmitted to the planet carrier through the planetary gear, and the power is transmitted to the integrated rim through the planet carrier to drive the vehicle to run; the brake 2 is a disc brake, a part of the integrated rim extending outwards is connected with a brake disc, and a brake caliper is arranged outside a left spoke; the cooling mechanism adopts an oil duct for cooling, the stator support frame is provided with the oil duct, and the stator windings on two sides are indirectly cooled by cooling the stator support frame; in the aspect of the assembly of whole mechanism, the semi-axis is the non-rotation type structure, and stator support frame and semi-axis are the integral structure, the assembly of stator support frame right side part: paste on the stator support frame right side outward for right side stator core, the right side permanent magnet pastes on rotor core outward, rotor core inboard is through deep groove ball bearing and semi-axis contact, the design of rotor core outside has the ring gear, with planetary gear meshing of planetary mechanism, the planet carrier inboard is through deep groove ball bearing and semi-axis contact, the design of outside has the ring gear, with the ring gear meshing of integration rim, the right side spoke is seal structure, be connected with the integration rim through sealed bearing, the assembly of stator support frame left side part: the left stator core is externally attached to the left side of a stator supporting frame, the left permanent magnet is externally attached to a rotor core, the inner side of the rotor core is in contact with a half shaft through a deep groove ball bearing, a rubber gasket and a shaft snap ring are fixed to the half shaft for the deep groove ball bearing, the outer side of the rotor core is welded to a connecting arm 1, the other end of the connecting arm 1 is welded to a gear ring of a planetary mechanism after the assembly of the components is completed, the left side of the connecting arm 1 is welded to a connecting arm 2, the left spoke is divided into 2 parts by the connecting arm 2, the connecting arm 2 is connected with the spoke through a sealing bearing, the spoke is connected with an integrated rim through the sealing bearing, the sealing bearing is respectively fixed by the rubber gasket and the shaft snap ring, the connecting arm 2 is welded to a brake disc 1, the integrated rim is welded to the brake disc 2, the brake caliper 1 and, 2, and fixing the two brake support frames and the half shaft by bolts respectively.
The working principle of the invention is as follows:
the power input is from the rotor iron cores, when a vehicle needs larger torque, the two rotor iron cores rotate, the power of the two rotor iron cores is input into the planetary mechanism through the sun gear and the gear ring respectively, the power is coupled and then transmitted to the integrated rim through the planetary carrier to drive the vehicle to run, at the moment, the planetary mechanism has three degrees of freedom, and the rotating speed of the planetary carrier can be adjusted by adjusting the rotating speeds of the two rotor iron cores respectively, so that the large-range adjustment of the transmission ratio is realized; when the vehicle needs smaller torque, the rotor core on the left side is braked by the brake, the gear ring of the planetary mechanism is also braked, power is transmitted to the planetary gear through the rotor core on the right side and is transmitted to the planet carrier through the planetary gear, and the power is transmitted to the integrated rim through the planet carrier to drive the vehicle to run; when the wheel needs to be braked, the disc brake works to brake the brake disc, the brake disc is connected with the integrated rim, the integrated rim is further braked, power output is interrupted, and the wheel stops rotating; the motor can generate higher temperature after working for a long time, the stator generates more heat seriously and needs to be cooled, the cooling mechanism adopts an oil duct for cooling, and the cooling of the stator winding is indirectly finished by cooling the oil duct; the non-pneumatic tire has a simple structure, a large tire body, can absorb jolts from the ground through deformation of the tire body, and has a good vibration damping effect. The non-inflatable tire does not need to be inflated, the danger of tire burst is avoided, and the life and property safety of people is effectively guaranteed.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. the non-pneumatic tire has a simple structure, a larger tire body, good vibration damping effect and good wear resistance and ground gripping performance, can absorb jolts from the ground through the deformation of the tire body, does not need to be inflated, avoids the danger of tire burst, and effectively ensures the life and property safety of people;
2. the speed reducing mechanism, the power coupling mechanism and the rim are designed into an integrated structure, so that the whole wheel is simpler in structure and less in failure rate;
3. the stator core and the rotor core of the hub motor are both in a disc shape, and the motor has the advantages of high power density, high torque density, high efficiency and high integration level;
4. the planetary mechanism is used as a power coupling mechanism, so that the maximization of torque coupling can be realized, the braking of the rotor core on the left side and the gear ring can be realized, the larger adjustable range of the transmission ratio can be realized, and the adjustable speed range of a vehicle can be enlarged;
5. the speed reducing mechanism and the power coupling mechanism use the same planetary mechanism, so that the whole wheel is compact in connection, the mass and the transmission loss are reduced, and the integrated structure can be suitable for wheels of different types and has popularization;
6. the annular oil duct is designed on the stator support shaft, the heat dissipation of the stator core of the motor can be more sufficient, the spoke and the integrated rim are sealed by the sealing bearing, and the good sealing performance in the motor can be guaranteed.
Drawings
The invention is further illustrated with reference to the figures and examples.
Fig. 1 is a specific structural schematic diagram of an electric wheel with an integrated structure based on a non-pneumatic tire.
Fig. 2 is a structural view of the oil passage of the spoke of the present invention.
Fig. 3 is a schematic view of the rotational speed when the rotational speed of rotor core 1 is greater than that of rotor core 2.
Fig. 4 is a schematic view of the rotation speed when rotor core 1 rotates at a lower speed than rotor core 2.
Fig. 5 is a schematic view of the rotational speed of the rotor core 2 at the time of braking.
Fig. 6 is a schematic structural view of embodiment 2 of the invention for a vehicle.
Fig. 7 is a schematic structural diagram of embodiment 3 of the invention for a vehicle.
Fig. 8 is a schematic structural view of embodiment 4 of the invention for a vehicle.
As shown in the first drawing: 1, a tread; 2, a tyre body; 3, an integrated rim 1; 4-1 stator support frame; 4-2 a stator core 1; 4-3 stator core 2; 4-4 stator winding 1; 4-5 stator windings 2; 4-6 rotor core 1; 4-7 rotor core 2; 4-8 permanent magnets 1; 4-9 permanent magnets 2; 5-1 a planet carrier 1; 5-2 planet wheel 1; 5-3 gear ring 1; 6 half shafts; 7 oil ducts; 8, a deep groove ball bearing 1; 9, deep groove ball bearings 2; 10 sealing the bearing; 11 connecting the arm 1; 12-1 brake disk 2; 12-2 friction plate 2; 12-3 brake caliper 2; 12-4, supporting frame 2; 13-1 brake disc 1; 13-2 friction plate 12; 13-3 brake caliper 1; 13-4 supporting the frame 1; 13-5 connecting the arm 2; 14 oil inlet; 15 oil outlet; 16 spokes 1; 17 spokes 2; 18 spokes 3; 19-1 sun gear; 19-2 planet 2; 19-3 ring gear 2; 19-4 connecting the arm 3; 19-5 planet carrier 2; 19-6 connecting arm 4
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, but the embodiments of the present invention are not limited thereto.
The non-pneumatic tire-based electric wheel with an integrated structure mainly comprises a hub motor, a power coupling mechanism, a speed reducing mechanism, a braking mechanism, a cooling mechanism and a non-pneumatic tire as shown in fig. 1. The hub motor mainly comprises a 4-1 stator support frame, 4-2, 4-3 stator iron cores 1, 2, 4-4 and 4-5 stator windings 1, 2, 4-6 and 4-7 rotor iron cores 1, 2, 4-8 and 4-9 permanent magnets 1 and 2, and integrated wheel rims 3, 16, 17 and 18 wheel spokes 1, 2 and 3; the power coupling mechanism and the speed reducing mechanism are the same planetary mechanism and comprise a 4-6 rotor core 1, 5-1 planet carrier 1, 5-2 planet gear 1, 5-3 gear ring 1, an integrated rim 3, 11 connecting arm 1, 13-5 connecting arm 2 and a 13 brake 1.
The half shaft 6 is a non-rotating structure, the spokes 1, 2 and 3 are designed into a sealing structure, the spoke 3 is connected with the integrated rim by a sealing bearing, the spoke 2 is respectively connected with the integrated rim and the connecting arm 2 by the sealing bearing, the spoke 1 is respectively connected with the connecting arm 2 and the half shaft by the sealing bearing, the stator cores 1 and 2 of 4-2, 4-3 are respectively externally attached to two sides of the stator supporting frame, the permanent magnets 1 and 2 of 4-8 and 4-9 are respectively externally attached to the rotor cores 1 and 2 of 4-6 and 4-7, the rotor cores 1 and 2 of 4-6 and 4-7 are respectively connected with the half shaft by deep groove ball bearings, the rotor core 1 is connected with the gear ring of the planetary mechanism by the connecting arm 1, the gear ring is designed on the outer side of the rotor core 2 and is engaged with the planetary gear 5-2 of the, a gear ring is designed on the inner side of the integrated rim 3 and is meshed with the outer side of the planet carrier, 11 the left side of a connecting arm 1 is connected with a 13-5 connecting arm 2, and the connecting arm 2 is connected with a 13-1 brake disc 2; the motor controller respectively realizes the forward rotation and the reverse rotation of the wheels by controlling the forward rotation and the reverse rotation of the rotor, so as to control the forward movement and the reverse movement of the vehicle. The brake is a disc brake, a part of the integrated rim 3 extending outwards is connected with a 12-1 brake disc 1, and a 12-3 brake caliper 1 is arranged outside 17 and 19 spokes 2 and 3; the non-pneumatic tire can effectively avoid the defects that the conventional pneumatic tire is easy to burst and traffic accidents can be caused after the burst, and effectively ensures the life and property safety of passengers; the non-pneumatic tire has a large carcass 2, has a good vibration damping effect, and improves the vibration characteristics of the system.
Example 1
Fig. 1 is a schematic structural diagram of an embodiment 1 of the present invention for a vehicle. The structure and principle of embodiment 1 are as follows:
the half shaft 6 is a non-rotating structure spoke 1, 2, 3 designed into a sealing structure, the spoke 3 is connected with an integrated rim by a sealing bearing, the spoke 2 is respectively connected with the integrated rim and a connecting arm 2 by the sealing bearing, the spoke 1 is respectively connected with the connecting arm 2 and the half shaft by the sealing bearing, 4-2, 4-3 stator cores 1, 2 are respectively externally pasted on two sides of a stator supporting frame, 4-8, 4-9 permanent magnets 1, 2 are respectively externally pasted on 4-6, 4-7 rotor cores 1, 2, 4-6, 4-7 rotor cores 1, 2 are respectively connected with the half shaft by a deep groove ball bearing, the rotor core 1 is connected with a gear ring of a planetary mechanism by the connecting arm 1, the outer side of the rotor core 2 is designed with a gear ring which is meshed with a planetary wheel 5-2 of the planetary mechanism, the outer side of a planetary, a gear ring is designed on the inner side of the integrated rim 3 and meshed with the outer side of the planet carrier, 11 the left side of a connecting arm 1 is connected with a 13-5 connecting arm 2, and the connecting arm 2 is connected with a 13-1 brake disc 2. The power coupling mechanism and the speed reducing mechanism are the same planetary mechanism and comprise a 4-6 rotor core 1, 5-1 planet carrier 1, 5-2 planet gear 1, 5-3 gear ring 1, an integrated rim 3, 11 connecting arm 1, 13-5 connecting arm 2 and a brake 13. When a vehicle needs large torque, the rotor cores 1 and 2 rotate, the power of the rotor cores 1 and 2 is input into the planetary mechanism 5 through the 4-2 rotor core 1 and the 5-3 gear ring 1 respectively, the power is coupled and then transmitted to the integrated rim 3 through the 5-1 planet carrier 1, the vehicle is driven to run, at the moment, the planetary mechanism has three degrees of freedom, and the rotational speed of the planet carrier can be adjusted by adjusting the rotational speeds of the rotor cores 1 and 2, so that the large-range adjustment of the transmission ratio is realized; when a vehicle needs smaller torque, the 4-3 rotor core 2 is braked by the brake 1, the 5-3 gear ring 1 of the planetary mechanism 5 is also braked, power is transmitted to the 5-2 planetary gear 1 through the 4-2 rotor core 1 and is transmitted to the 5-1 planetary carrier 1 through the planetary gear, and the power is transmitted to the integrated rim 3 through the planetary carrier to drive the vehicle to run; the brake 2 is a disc brake, a part of the integrated rim 3 extending outwards is connected with a brake disc 12-1, a brake caliper 12-3 is arranged outside the spokes 2 and 3, when the wheel needs to be braked, the disc brake 2 works to brake the integrated rim 3, so that the power output is interrupted, and the wheel stops rotating; an oil inlet 14 of the cooling mechanism is designed at the upper side of the half shaft, oil entering the half shaft from the oil inlet 14 enters the stator support frame through an oil passage of the half shaft (see the attached drawing 1 of the specification), circulates for a circle and a half in an oil passage 7 (see the attached drawing 2 of the specification) of the stator support frame, flows into the oil passage of the half shaft, flows out through an oil outlet 15, and indirectly cools the stator winding through cooling the spoke.
In the planetary mechanism 1, the torque output by the planet carrier 1 is the sum of the torques output by the two rotor iron cores, if the rotating speeds of the two rotor iron cores are the same as n1The rotational speed n of the planet carrier 13＝n1When the rotation speed of rotor core 1 is greater than the rotation speed of rotor core 2, as shown in fig. 3 (α indicates the number of teeth of ring gear 1 and the gear ratio of sun gear 1), the rotation speed of carrier 1 is n3＝(n2α+n1)/[(n1-n2)(1+α)]If the rotational speed of rotor core 1 is lower than the rotational speed of rotor core 2, the rotational speed of carrier 1 is n as shown in fig. 43＝n1+n1(n2-n1) α/(1+ α), when the rotor core 1 is braked, as shown in fig. 5, the rotational speed of the carrier 1 is n3＝n1And (1+ α), the steering directions of the situations are the same, the mechanism can control the torque and the rotating speed according to the actual driving environment, the driving requirements of different environments can be better adapted, the torque and the rotating speed have larger adjusting ranges, the maximum torque is output at the minimum rotating speed, the non-pneumatic tire can avoid the defects that the traditional pneumatic tire is easy to burst and traffic accidents are possibly caused after the burst, the life and property safety of passengers is effectively ensured, and the non-pneumatic tire has a larger tire body, has a good vibration damping effect, and improves the vibration characteristic of a system and the grounding performance of wheels.
The specific assembling process of the integrated structure of the electric wheel is as follows:
Example 2
The specific structure of example 2 is shown in fig. 6. The difference from example 1 is: the speed reducing mechanism is not only a planetary mechanism, but a planetary mechanism specially used as the speed reducing mechanism is designed on the right side of the original planetary mechanism, and other structures and components are basically unchanged. The concrete structure and the working principle are as follows:
the planet carrier 1 is a planet carrier of the planetary mechanism 2, a 19-2 sun gear 2 of the planetary mechanism 2 is welded on a half shaft to limit the rotation and axial movement of the sun gear 2, and an inner gear ring of an integrated rim is meshed with the 19-2 planet gear 2; the power is transmitted from the planet carrier 1 of the planetary mechanism 1 to the integrated wheel rim after passing through the planetary mechanism 2, and the vehicle is driven to run.
The rotational speed of the planet carrier 1 is n3The ratio of the number of teeth of the ring gear 2 to the number of teeth of the sun gear 2 is α1The transmission ratio of the planetary gear mechanism 2 is (1+ α)1)/α1And the steering is the same.
Example 3
The specific structure of example 3 is shown in fig. 7. The difference from example 1 is: the speed reducing mechanism is not only a planetary mechanism, but a planetary mechanism specially used as the speed reducing mechanism is designed on the right side of the original planetary mechanism, and other structures and components are basically unchanged. The concrete structure and the working principle are as follows:
the planet carrier 1 is connected with a 19-1 sun gear 2 of the planetary mechanism 2 through a 19-6 connecting arm 4, the sun gear 2 is connected with a half shaft through a deep groove ball bearing, a gear ring 2 is welded with the half shaft through the connecting arm 4, the rotation of the gear ring 2 is limited, and a gear ring is designed on the outer side of the planet carrier 2 and is meshed with an inner gear ring of an integrated rim; power is transmitted to the sun wheel 2 from the planet carrier of the planetary mechanism 1, and is transmitted to the integrated rim through the planet carrier 2 to drive the vehicle to run.
The rotational speed of the planet carrier 1 is n3The ratio of the number of teeth of the ring gear 2 to the number of teeth of the sun gear 2 is α2The gear ratio of the planetary gear mechanism 2 is α2The direction of rotation is reversed.
Example 4
The specific structure of example 4 is shown in fig. 8. The difference from example 1 is: the speed reducing mechanism is not only a planetary mechanism, but a planetary mechanism specially used as the speed reducing mechanism is designed on the right side of the original planetary mechanism, and other structures and components are basically unchanged. The concrete structure and the working principle are as follows:
the planet carrier 1 is connected with a 19-1 sun gear 2 of a planetary mechanism 2 through a 19-4 connecting arm 3, the sun gear 2 is connected with a half shaft through a deep groove ball bearing, the planet carrier 2 is welded with the half shaft to limit the rotation of the planet carrier 2, and a gear ring is designed on the outer side of the gear ring 2 and is meshed with an inner gear ring of an integrated rim; power is transmitted to the sun wheel 2 from the planet carrier of the planetary mechanism 1, and is transmitted to the integrated rim through the planet wheel 2 and the gear ring 2, so that the vehicle is driven to run.
The rotational speed of the planet carrier 1 is n3The ratio of the number of teeth of the ring gear 2 to the number of teeth of the sun gear 2 is α3The gear ratio of the planetary gear mechanism 2 is 1+ α3The direction of rotation is the same.
Claims (6)
1. The invention discloses an outer rotor electric wheel integrated structure based on a non-pneumatic tire and an assembly method. The hub motor mainly comprises a stator core, a stator winding, a rotor core, a permanent magnet and a stator support frame; the power coupling mechanism and the speed reducing mechanism are the same planetary mechanism and are designed in the motor, and the structure of the motor mainly comprises a rotor core, a planetary gear, a gear ring, a planetary carrier and an integrated rim. The hub motor, the power coupling mechanism, the speed reducing mechanism and the rim are integrally designed: the half shaft is of a non-rotating structure, the spoke is designed into a sealing structure, two stator cores are respectively attached to two sides of a stator support frame, the stator support frame is fixed on the half shaft, a right rotor core is a sun gear of the planetary mechanism, a gear ring is designed outside the sun gear of the planetary mechanism and is meshed with a planetary gear, a left rotor core is connected with the gear ring through a connecting arm 1, a gear ring is designed outside a planet carrier of the planetary mechanism, a gear ring is also designed inside a rim, the gear ring inside the rim is meshed with the gear ring outside the planet carrier, the left side of the connecting arm 1 is connected with a brake disc 1 through a connecting arm 2, and the rotation of the left rotor core and the gear ring of the planetary mechanism is indirectly controlled through the control of the rotation of the; when a vehicle needs larger torque, the two rotor cores rotate, the power of the two rotor cores is input into the planetary mechanism through the sun gear and the gear ring respectively, the power is coupled and then transmitted to the integrated rim through the planetary frame to drive the vehicle to run, at the moment, the planetary mechanism has three degrees of freedom, and the rotating speed of the planetary frame can be adjusted by adjusting the rotating speeds of the two rotor cores, so that the large-range adjustment of the transmission ratio is realized; when the vehicle needs smaller torque, the rotor core on the left side is braked by the brake, the gear ring of the planetary mechanism is also braked, power is transmitted to the planetary gear through the rotor core on the right side and is transmitted to the planet carrier through the planetary gear, and the power is transmitted to the integrated rim through the planet carrier to drive the vehicle to run; the brake 2 is a disc brake, a brake disc of the brake 2 is welded with the outward protruding part of the integrated rim, when the wheel needs to be braked, the brake 2 works to brake the integrated rim, so that power output is interrupted, and the wheel stops rotating; an oil inlet of the cooling mechanism is designed at the upper side of the half shaft, oil entering the half shaft from the oil inlet enters the stator support frame through an oil duct (the half shaft oil duct is shown in the attached drawing 1) of the half shaft, circulates for a half circle in the oil duct (the spoke oil duct is shown in the attached drawing 2) of the stator support frame, flows into the oil duct of the half shaft, flows out through the oil outlet, and indirectly completes the cooling of the stator winding through the cooling of the spoke; the non-pneumatic tire effectively avoids the easy tire burst of the traditional pneumatic tire and effectively ensures the life and property safety of passengers; the non-pneumatic tire has a larger tire body, has a better vibration reduction effect, and can improve the grounding performance of the wheel. In the aspect of the assembly of whole mechanism, the semi-axis is the non-rotation type structure, and stator support frame and semi-axis are the integral structure, the assembly of stator support frame right side part: paste on the stator support frame right side outward for right side stator core, the right side permanent magnet pastes on rotor core outward, rotor core inboard is through deep groove ball bearing and semi-axis contact, the design of rotor core outside has the ring gear, with planetary gear meshing of planetary mechanism, the planet carrier inboard is through deep groove ball bearing and semi-axis contact, the design of outside has the ring gear, with the ring gear meshing of integration rim, the right side spoke is seal structure, be connected with the integration rim through sealed bearing, the assembly of stator support frame left side part: the left stator core is externally attached to the left side of a stator supporting frame, the left permanent magnet is externally attached to a rotor core, the inner side of the rotor core is in contact with a half shaft through a deep groove ball bearing, a rubber gasket and a shaft snap ring are fixed to the half shaft for the deep groove ball bearing, the outer side of the rotor core is welded to a connecting arm 1, the other end of the connecting arm 1 is welded to a gear ring of a planetary mechanism after the assembly of the components is completed, the left side of the connecting arm 1 is welded to a connecting arm 2, the left spoke is divided into 2 parts by the connecting arm 2, the connecting arm 2 is connected with the spoke through a sealing bearing, the spoke is connected with an integrated rim through the sealing bearing, the sealing bearing is respectively fixed by the rubber gasket and the shaft snap ring, the connecting arm 2 is welded to a brake disc 1, the integrated rim is welded to the brake disc 2, the brake caliper 1 and, 2, and fixing the two brake support frames and the half shaft by bolts respectively.
2. A non-pneumatic tire based electric wheel integrated package and method of assembly as claimed in claim 1 wherein: the motor is a motor adopting excitation modes such as permanent magnet synchronization, permanent magnet direct current and alternating current induction.
3. A non-pneumatic tire based electric wheel integrated package and method of assembly as claimed in claim 1 wherein: the hub motor is an inner rotor, an outer stator structure, an inner stator and an outer rotor structure.
4. A non-pneumatic tire based electric wheel integrated package and method of assembly as claimed in claim 1 wherein: the bearing is a rolling bearing such as a deep groove ball bearing, a cylindrical roller bearing, a needle bearing and the like.
5. A non-pneumatic tire based electric wheel integrated package and method of assembly as claimed in claim 1 wherein: the positioning mode of the bearing is various positioning modes such as snap ring positioning for a rubber washer and a shaft, nut positioning, spring retainer ring positioning, thrust washer positioning, threaded ring positioning and the like.
6. A non-pneumatic tire based electric wheel integrated package and method of assembly as claimed in claim 1 wherein: the connection modes of the brake caliper and the brake support shaft, the brake support shaft and the half shaft, and the brake disc and the integrated rim are various connection modes such as bolt-nut connection, riveting and welding.
Priority Applications (1)
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| GB2599592A (en) * | 2021-01-29 | 2022-04-06 | Univ Jiangsu | Dual-rotor in-wheel motor based on axial magnetic field and control method thereof |
| GB2599592B (en) * | 2021-01-29 | 2023-05-03 | Univ Jiangsu | Dual-rotor in-wheel motor based on axial magnetic field and control method therefor |
| WO2023008762A1 (en) * | 2021-07-28 | 2023-02-02 | 씨스톤 테크놀로지스(주) | Power transmission device |
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