CN113043832B - Small-size light-weight double-brake high-power heavy-load electric wheel assembly - Google Patents
Small-size light-weight double-brake high-power heavy-load electric wheel assembly Download PDFInfo
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- CN113043832B CN113043832B CN202110449146.4A CN202110449146A CN113043832B CN 113043832 B CN113043832 B CN 113043832B CN 202110449146 A CN202110449146 A CN 202110449146A CN 113043832 B CN113043832 B CN 113043832B
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- speed reducer
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B35/00—Axle units; Parts thereof ; Arrangements for lubrication of axles
- B60B35/12—Torque-transmitting axles
- B60B35/14—Torque-transmitting axles composite or split, e.g. half- axles; Couplings between axle parts or sections
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B7/00—Wheel cover discs, rings, or the like, for ornamenting, protecting, venting, or obscuring, wholly or in part, the wheel body, rim, hub, or tyre sidewall, e.g. wheel cover discs, wheel cover discs with cooling fins
- B60B7/0013—Hub caps
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T1/00—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
- B60T1/02—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels
- B60T1/06—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels
- B60T1/062—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels acting on transmission parts
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Braking Arrangements (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
Abstract
A small-sized light-weight double-brake high-power heavy-load electric wheel assembly comprises a driving motor, a brake and a speed reducer, wherein the driving motor, the brake and the speed reducer are integrated together to form a three-in-one electric driving wheel; the brake is a double brake, namely a service brake and a parking brake, and the service brake and the parking brake are respectively arranged on two sides of the driving motor; the rotor of the driving motor is a motor rotor with a light-weighted concave structure on two side faces, a speed reducer and a parking brake respectively extend into the center of the rotor of the driving motor from two sides of the driving motor to form an inward convex structure, a service brake is sleeved outside a shell of the speed reducer on one side, close to the speed reducer, of the driving motor, and the driving motor, the brake and the speed reducer are all light-weighted structures. The invention provides a small-sized light-weight double-brake high-power heavy-load electric wheel assembly, which is compact in structure and greatly reduced in weight on the premise of keeping the high-power density heavy-load characteristic.
Description
Technical Field
The invention relates to an electric drive power assembly, in particular to a small-sized light-weight double-brake high-power heavy-load electric wheel assembly, which can effectively reduce the overall structure of a drive electric wheel and reduce the weight of the electric wheel; belongs to the technical field of electric drive manufacturing.
Background
The electric drive adopting electric power as drive power is a new energy drive mode widely popularized and applied at present, the application range of the electric drive is wider and wider, and a two-in-one electric drive assembly synthesized by a drive motor and a speed reducer and a three-in-one electric drive assembly synthesized by the drive motor, the speed reducer and a braking device are gradually formed. However, as the application of the electric driving wheel is more and more extensive, the requirements on how to improve the power and reduce the volume are higher and higher; especially, for some specific working condition places, for example, how to change the original other driving into electric driving in the original space, or how to further improve the power density of the electric wheel in the original space, the electric wheel driving device becomes the target pursued by the two-in-one electric driving assembly and the three-in-one electric driving assembly.
On the other hand, in order to improve the mounting flexibility of the electric drive wheel and to extend the electric drive endurance of the electric wheel, the size and weight of the electric wheel are emphasized to be reduced, but at present, there is no good method for reducing the size and weight of the dual-system high-power heavy-duty electric wheel, and thus no intensive research and investigation is conducted. However, for some specific power assemblies, especially for electric drive assemblies requiring high power, because the installation space of the aerial drive assembly is extremely limited, and no more space can be obtained in the axial dimension, it is not easy to realize three-in-one that integrates the speed reducer, the drive motor and the brake together for such a small space, and because the axial space of the power assembly in the small space is limited and is a relatively fixed dimension, the brake, the speed reducer and the drive motor are all installed in the power assembly, besides considering the structural dimension, the overall structural strength, the transmission efficiency and how to lubricate and seal are all very difficult to realize; the axial space size is mainly designed, and the characteristics of the original driving assembly are not influenced, which is difficult to realize; especially for the electric drive assembly with high power density, a three-in-one electric drive assembly scheme is adopted, wherein the speed reducer is arranged on the left side, the drive motor is arranged in the middle, the brakes are arranged on the two sides, and the axial position cannot be expanded outwards any more, so that how to integrate the double brakes and the speed reducer into the assembly of the drive motor in a limited space is a difficult point worthy of improvement, the power density can be further improved, and high power overload is realized.
Patent documents in which the same technology as that of the present invention is not found through patent search are reported, and the following patents which have a certain relationship with the present invention are mainly included:
1. the intelligent electric hub has a patent number of CN201810699372.6 and is named as 'an intelligent electric hub', and the applicant is: the invention discloses an intelligent electric hub, which is characterized in that two ends of a cylindrical hub shell are respectively connected with a left end cover of the hub and an outer ring of a flywheel mechanism to form an inner cavity for integrally accommodating a speed reduction motor, a battery pack and a brake plate; the inner ring of a flywheel of the flywheel mechanism is fixedly sleeved on a tower footing, and the tower footing is sleeved on a right half shaft of the hub through a bearing support; the left end cover of the wheel hub is sleeved on the left half shaft of the wheel hub through a bearing support, and the output end of the speed reducing motor is connected with the left end cover of the wheel hub; the motor shell is fixedly connected with the right half shaft of the wheel hub and the left half shaft of the wheel hub; the battery pack is fixedly sleeved on the motor shell; the battery pack is electrically connected with the brake plate to supply power to the brake plate, the brake plate comprises a riding state sensing device, an energy recovery charging mechanism, a processor and a motor driving module, a sensor of the riding sensing device is in signal connection with the processor, and the processor controls the motor driving module to drive the speed reduction motor to operate according to a sensor signal. Although the brake plate is placed in the electric hub, the brake plate must be placed in the electric hub because the driving battery is also placed in the electric hub, and the technical scheme is that the brake plate is sleeved on the right half shaft of the hub through a central through hole and is axially fastened and fixed on the right end cover of the motor shell through a screw, so that the brake plate is accommodated in the inner cavity of the hub; this kind is direct through the screw axial with the brake plate fastening in the right-hand member of motor casing is covered to arrange the brake plate in the centre of wheel hub inner chamber, the next door still is equipped with parts such as half axle bearing, such technical scheme can also to electric bicycle, nevertheless to the trinity electric drive assembly of high altitude platform, the brake part generates heat great, is unfavorable for the heat dissipation, owing to there is arresting gear on the right of motor in addition, so can't realize.
2. CN201420278039.5 entitled "brushless gearless motorized hub with rotary input power", filed as: xuzhou huanhai zhongyi electromechanical industry limited's utility model patent, this patent discloses a brushless toothless electric wheel hub with rotatory input power, belongs to the wheel hub motor. The iron core of the magnetic steel stator of the electric hub is connected with the through shaft, the winding rotor is positioned in the hub shell and is connected with the hub shell into a whole, and the end covers on the two sides of the hub shell are respectively supported on the through shaft through bearings; the storage battery is fixed on the outer wall of the hub shell through a screw, a power line is in rotary output, an insulating material is attached to the outer surface of the power line, the power line passes through a wire outlet groove in the motor end cover after passing through a brake and is connected with a winding of the magnetic steel stator, magnetic steel of the magnetic steel stator is bonded on a stator iron core, a Hall element is bonded in the winding groove, and the storage battery is connected with a winding of a winding rotor; when the motor is electrified, continuous rotating torque can be generated, and through electronic commutation of the Hall element, the continuous rotating torque is generated with the stator magnetic steel, so that the hub shell is driven to rotate. The brake of this patent is mounted on the side of the motor, which is not a space for the three-in-one electric drive assembly of the aerial platform and is therefore not feasible.
3. The patent number is CN201020135835.5, and the name is "coaxial centrally-mounted driving motor assembly for electric vehicle with built-in brake", the applicant is: the patent discloses a coaxial middle-arranged driving motor assembly for an electric vehicle with a built-in brake, which comprises a driving assembly shell and a shell sealing end cover, wherein a motor middle shaft hole, a waterproof sealing chamber, a bearing chamber and a control circuit board chamber are sequentially arranged on the shell sealing end cover; a control circuit board is arranged in the control circuit board chamber; the radiating surface of each power amplifier tube of the control circuit board is fastened with the sealing end cover surface of the shell, and the sealing end cover of the shell is used as the radiating surface of the power amplifier tube. And the shell sealing end cover is tightly fastened with the end face of the shell of the drive assembly in a sealing way. The patent is named as a built-in brake, but the brake device and the speed reducer are not integrated, so that the problem is not existed in the place which is not limited by the axial dimension, and the problem of how to radiate and fix is only needed to be considered, so the technology disclosed by the document can not know how to reasonably make the axial position dimension of the aerial platform and install the brake on the inner surface of the driving motor.
Through careful analysis of the above patents, although the patents refer to the mounting of the brake on the inner surface of the motor, some improved technical solutions have been proposed, but these technical solutions are not completely suitable for the structure of the electric driving wheel with high power density, and especially, the miniaturization and light weight of the whole electric driving wheel are not considered, so that further research and improvement are still needed.
Disclosure of Invention
The invention aims to provide a novel small-sized light-weighted double-brake high-power heavy-load electric wheel assembly aiming at the aspect that the existing electric drive assembly is lack of miniaturization and light weight.
In order to achieve the purpose, the invention provides a small-sized light-weight double-brake high-power heavy-load electric wheel assembly and a driving assembly, which comprise a driving motor, a brake and a speed reducer, wherein the driving motor, the brake and the speed reducer are integrated together to form a three-in-one electric driving wheel; the brake is a double brake, namely a service brake and a parking brake, and the service brake and the parking brake are respectively arranged on two sides of the driving motor; the rotor of the driving motor is a motor rotor with a light-weighted concave structure on two side surfaces, the speed reducer and the parking brake respectively extend into the center of the rotor of the driving motor from two sides of the driving motor to form an inward-protruding structure, the service brake is sleeved outside a shell of the speed reducer on one side, close to the speed reducer, of the driving motor, and the driving motor, the brake and the speed reducer are all of the light-weighted structure.
Furthermore, the driving motor rotor with the concave structure on the two side faces for the light weight processing removes the edge part corresponding to the motor stator and the middle part of the rotor core shaft part for the driving motor rotor, grooves are dug inwards respectively to form a supporting structure for the driving motor rotor by supporting ribs, and the parking brake and the speed reducer extend into the grooves on the two sides of the supporting ribs on the inner face of the driving motor rotor from the two sides of the driving motor respectively. The space of the middle part of the motor rotor is effectively utilized, the structure of the electric wheel is shortened, and the whole weight of the electric wheel is also reduced.
Furthermore, the service brake and the parking brake are respectively arranged on two sides of the driving motor, and the service brake and the parking brake are respectively arranged on two side surfaces of the driving motor; and the parking braking device protrudes from one side of the driving motor to the inner side of the rotor of the driving motor, is mounted in a hanging manner, and meanwhile, the traveling parking brake is sleeved outside the shell of the speed reducer, so that the axial structural size of the electric wheel is reduced from the two sides of the motor.
Furthermore, the speed reducer and the driving motor adopt a common end cover structure, and an end cover on one side of the driving motor and an end cover on one side of the speed reducer are connected into a whole to form the common end cover structure; an end cover on one side of the speed reducer extends into the groove position of the driving motor rotor to form that an input shaft of the speed reducer and an output shaft of the driving motor extend into the groove space position inside the driving motor rotor to be connected, and a motor rotor bearing and a planetary wheel bearing of the speed reducer are arranged in a bearing seat of the end cover in parallel; the outer ring of the motor rotor bearing is clamped in a bearing seat of an end cover at one end of the speed reducer, and the inner ring of the motor rotor bearing is sleeved on the output shaft of the driving motor to form a supporting structure of a coaxial bearing seat of the driving motor rotor and the speed reducer; further shorten the axial structure size of electronic round of assembly.
Further, service brake cover outside the reduction gear shell that driving motor leaned on reduction gear one side, and service brake installs by electronic round of wheel hub, service brake's stopper friction disc with and electronic round of wheel hub link together, and electronic round of wheel hub installs and sheathes in from the hub connecting axle that reduction gear output shaft and electronic round of wheel hub are connected, hub connecting axle sleeve is the reverse structure, and make electronic round of wheel hub be located the outer axial position of reduction gear shell, it installs at the reduction gear outer structure to constitute service brake suit, make full use of high-power heavy load service brake's brake disc diameter great, do the sky with the center, compress the reduction gear to the vacant position in center of brake disc again, shorten the axial assembly distance of electronic round once more.
Furthermore, the driving motor is a hollow structure subjected to lightweight processing, a rotor of the driving motor is mainly subjected to hollowing processing from two sides to the inside, and only the supporting ribs meeting the strength of the rotor of the motor are reserved in the middle; a structure that the rotor of the driving motor and the speed reducer are supported by a coaxial bearing is adopted to form the driving motor of the structure that the rotor of the driving motor and the speed reducer are supported by the coaxial bearing; meanwhile, combining a side surface end cover of the driving motor with an end cover on one side of the speed reducer to form a common end cover structure, and fixedly connecting the end cover of the speed reducer with the side surface end cover of the driving motor through a fastening piece; and the shell, the side end cover and the rotor shaft of the driving motor are respectively made of different metal materials, wherein the shell and the side end cover are made of aluminum alloy, the rotor of the driving motor is made of steel, and the weight is further reduced through different materials.
Furthermore, the speed reducer adopts a secondary planetary speed reducing structure, and the input and the output of the secondary planetary speed reducer adopt coaxial three-bearing supporting structures; wherein the input shaft of the speed reducer is inserted into the output shaft of the driving motor through a spline, and the output shaft of the speed reducer is inserted into the hub connecting sleeve through a spline. Therefore, the central inner space of the output shaft of the driving motor is effectively utilized, and the axial structure of the speed reducer connected with the motor is shortened.
Furthermore, the service brake adopts a three-clamp braking mode, is distributed on the circumference of the brake disc in an equal distribution mode, reduces the external volume structure of the service brake under the condition of keeping the braking power by reasonably distributing the braking force of each clamp, and reduces the weight of the brake caliper by carrying out light weight treatment on the brake caliper so as to achieve the aim of light weight.
Furthermore, the weight reduction of the brake caliper is realized by removing redundant metal parts and arranging a hydraulic flow passage of the brake caliper in the brake caliper body according to the characteristics of the brake caliper on the premise of ensuring the strength of the brake caliper, so that a pipeline externally arranged on the brake caliper is omitted; the hydraulic flow channel comprises a first flow channel entering the piston from the side surfaces of two ends of the brake caliper body, a second flow channel entering the piston on the other side from the middle of two ends in an inclined manner, a two-side communication flow channel communicating the first flow channel and the second flow channel on two sides from the side surface of the brake caliper body, and a cylinder body communication flow channel entering the piston cylinder body from the outside of the piston cylinder body and communicating with each cylinder body; the flow channel is communicated with the cylinder body through the first flow channel, the second flow channel, the two side communication flow channels. Therefore, the leakage of the pipeline can be effectively prevented, and the weight of the brake caliper can be further reduced.
Furthermore, the parking brake adopts a suspension type structure, is suspended on the motor rotor auxiliary shaft at the other end of the main shaft of the driving motor rotor corresponding to the speed reducer and protrudes into the groove of the motor rotor to form a structure symmetrical to the speed reducer, so that the balance of the driving motor is facilitated, the space of the parking brake can be saved, and the miniaturization of the parking brake is realized.
The invention has the advantages that:
the invention provides a small-sized light-weight double-brake high-power heavy-load electric wheel assembly and a driving assembly. The reducer, the driving motor and the brake are combined together through axial and radial adjustment, and the reducer has the following advantages:
1. the driving motor is concave inwards in the two directions, so that the internal space of the center of the rotor of the driving motor can be effectively utilized, other parts can be integrated into the driving motor for the high-power heavy-load electric wheel, the original size space is not changed, the power density is effectively improved, the axial structure size of the electric wheel is effectively shortened, and the purposes of miniaturization and light weight of the electric wheel are achieved;
2. the invention adopts a structure that the speed reducer and the driving motor rotor are coaxially supported, not only the structure of the driving motor is simplified, but also the axial structure size of the driving motor can be greatly reduced, so that the driving motor can be made into a motor structure with a single supporting rib structure, and a large space is provided for reducing the size of the whole electric wheel and the weight of the electric wheel;
3. the double brakes are integrated beside the driving motor from two sides of the driving motor respectively, the parking brake is extended into the rotor of the driving motor, and the service brake is sleeved outside the shell of the speed reducer, so that the axial distance occupied by the brakes is greatly shortened, and the reduction of the overall structure size of the electric wheel in a limited space is facilitated;
4. according to the invention, each component is subjected to light weight treatment, so that the overall weight of the electric wheel can be effectively reduced, and the purpose of light weight is achieved.
Drawings
FIG. 1 is a schematic diagram of the general structure of a dual-braking high-power heavy-load electric wheel according to the present invention;
FIG. 2 is a schematic view of the left side of the structure of FIG. 1;
FIG. 3 is a schematic diagram of the right side view of FIG. 1;
FIG. 4 is a schematic cross-sectional view of the structure of FIG. 1;
FIG. 5 is a schematic perspective view of a brake caliper with a lightweight structure according to the present invention;
fig. 6 is a front structural view of a brake caliper with a lightweight structure.
Detailed Description
The invention is further illustrated with reference to the following figures and specific examples.
Example one
The invention relates to a small-sized light-weight double-brake high-power heavy-load electric wheel assembly and a driving assembly, wherein the electric wheel comprises a driving motor 1, a brake 2 and a speed reducer 3, and the driving motor 1, the brake 2 and the speed reducer 3 are integrated together to form a three-in-one electric wheel; the brake 2 is a double brake, namely a service brake 5 and a parking brake 6, and the service brake 5 and the parking brake 6 are respectively arranged on two sides of the driving motor 1; the driving motor rotor 7 of the driving motor 1 is a driving motor rotor 7 with a light-weight processed concave structure on two side surfaces, the speed reducer 3 and the parking brake 6 respectively extend into the center of the driving motor rotor 7 from two sides of the driving motor 1 to form an inward-protruding connection structure, the service brake 5 is sleeved outside a speed reducer shell 8 on one side, close to the speed reducer 3, of the driving motor 1, and the driving motor 1, the brake 2 and the speed reducer 3 are all driving motors, brakes and speed reducer structures with light-weight structures.
The driving motor rotor 7 with the concave structure on the two side faces for light-weight processing is a structure that the driving motor rotor 7 removes the edge part and the middle part of the rotor mandrel part which are correspondingly acted with the motor stator, grooves 10 and 11 are respectively dug inwards to form a supporting structure of the driving motor rotor 7 by a supporting rib 12, and the parking brake 6 and the speed reducer 2 respectively extend into the grooves on the two sides of the supporting rib 12 on the inner face of the driving motor rotor 7 from the two sides of the driving motor 1. The space of the middle part of the motor rotor 7 is effectively utilized, the structure of the electric wheel is shortened, and the whole weight of the electric wheel is also reduced.
The service brake 5 and the parking brake 6 are respectively arranged on two sides of the driving motor 1, and the service brake 5 and the parking brake 6 are respectively arranged on two side surfaces of the driving motor 1; and the parking braking device protrudes into the inner side of the rotor 7 of the driving motor from one side of the driving motor, is installed in a hanging manner, and meanwhile, the traveling parking brake is sleeved outside the shell of the speed reducer, so that the axial structural size of the electric wheel is reduced from two sides of the motor. Therefore, for the high-power heavy-load electric wheel, the large space size of the diameter of the motor rotor is fully utilized, and part of components are compressed into the inner space of the rotor, so that the axial size of the speed reducer and the motor is greatly shortened, and through actual measurement and calculation, compared with the existing three-in-one structure which is arranged in a straight line, the position of 110-160mm can be shortened, and great advantages are brought to the increase of power density in a limited space.
The speed reducer 3 and the driving motor 1 adopt a common end cover structure, and an end cover 13 at one side of the driving motor 1 and an end cover 14 at one side of the speed reducer 3 are connected into a whole to form the common end cover structure; an end cover 14 on one side of the speed reducer 3 extends into a groove position of the driving motor rotor 7 to form that an input shaft 15 of the speed reducer and an output shaft 16 of the driving motor extend into a groove space position inside the driving motor rotor 7 to be connected, and a motor rotor bearing 17 and a planetary wheel bearing 23 of the speed reducer are arranged in a bearing seat of the end cover 14 in parallel; the outer ring of the motor rotor bearing 17 is clamped in a bearing seat of an end cover 14 at one end of the speed reducer 3, and the inner ring of the motor rotor bearing 17 is sleeved on an output shaft 16 of the driving motor to form a supporting structure of a coaxial bearing seat of the driving motor rotor 7 and the speed reducer 3; the axial structure size of the electric wheel assembly can be further shortened, and meanwhile, the connection precision of the driving motor and the speed reducer is improved.
The driving motor 1 is of a hollow structure with light weight, and mainly comprises a driving motor rotor 7 which is subjected to hollowing from two sides inwards, and only a support rib 12 meeting the strength of the motor rotor is reserved in the middle; a structure that the driving motor rotor 7 and the speed reducer 3 are supported by a coaxial bearing is adopted to form a driving motor with a structure that the driving motor rotor 7 and the speed reducer 3 are supported by a coaxial bearing; meanwhile, combining the side end cover 13 of the driving motor 1 with the end cover 14 on one side of the speed reducer to form a common end cover structure, and fixedly connecting the end cover 14 of the speed reducer with the side end cover 13 of the driving motor through a fastener 21; and the shell 22, the side end cover 14 and the rotor shaft of the driving motor are respectively made of different metal materials, wherein the shell 22 and the side end cover 14 are made of aluminum alloy, the driving motor rotor 7 is made of steel materials, and the weight is further reduced through different materials.
The speed reducer 3 adopts a secondary planetary speed reducing structure, and the input and the output of the secondary planetary speed reducer adopt coaxial three-bearing supporting structures; wherein, the input shaft 15 of the speed reducer is inserted into the output shaft 16 of the driving motor through a spline, and the output shaft 18 of the speed reducer is inserted into the hub connecting shaft sleeve 20 through a spline. This effectively utilizes the central interior space of the drive motor output shaft 16 and shortens the axial structure of the reducer connected to the motor.
The service brake 5 adopts a three-clamp braking mode, is equally distributed on the circumference of the brake disc 19, reduces the external volume structure of the service brake under the condition of keeping the braking power by reasonably distributing the braking force of each clamp, and reduces the weight of the brake caliper by lightening the brake caliper 501, thereby achieving the aim of lightening the weight.
The weight reduction of the brake caliper 501 is realized by removing redundant metal parts on the premise of ensuring the strength of the brake caliper according to the characteristics of the brake caliper, and arranging a hydraulic flow passage 502 of the brake caliper 501 in the brake caliper body, so that a pipeline externally arranged on the brake caliper is omitted; the hydraulic flow channel comprises a first flow channel entering the piston from the side surfaces of two ends of the brake caliper body, a second flow channel obliquely entering the piston on the other side from the middle of the two ends, a two-side communication flow channel communicating the first flow channel and the second flow channel on two sides from the side surface of the brake caliper body, and a cylinder body communication flow channel entering the piston cylinder body from the outside of the piston cylinder body and communicating the piston cylinder body with each cylinder body; the first runner, the second runner, the two-side communicating runner and the cylinder body communicating runner. Therefore, leakage of the pipeline can be effectively prevented, and the weight of the brake caliper can be further reduced.
The parking brake 6 is in a suspension type structure, is suspended on the motor rotor auxiliary shaft 24 at the other end of the main shaft of the driving motor rotor corresponding to the speed reducer and protrudes into the groove 10 of the motor rotor 7 to form a structure symmetrical with the speed reducer, so that the balance of the driving motor is facilitated, the space of parking brake can be saved, and the miniaturization of the parking brake is realized.
The above listed embodiments are only for clear and complete description of the technical solution of the present invention with reference to the accompanying drawings; it should be understood that the embodiments described are only a part of the embodiments of the present invention, and not all embodiments, and the terms such as "upper", "lower", "front", "back", "middle", etc. used in this specification are for clarity of description only, and are not intended to limit the scope of the invention, which can be implemented, and the changes or modifications of the relative relationship thereof are also regarded as the scope of the invention without substantial technical changes. Meanwhile, the structures, the proportions, the sizes, and the like shown in the drawings are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used for limiting the conditions under which the present invention can be implemented, so that the present invention has no technical essence, and any structural modification, changes in proportion relation, or adjustments of the sizes, can still fall within the range covered by the technical contents disclosed in the present invention without affecting the effects and the achievable purposes of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention has the advantages that:
the invention provides a small-sized light-weight double-brake high-power heavy-load electric wheel assembly and a driving assembly. The speed reducer, the driving motor and the brake are combined together through axial and radial adjustment, and the speed reducer has the following advantages:
1. the driving motor is concave inwards in the two directions, so that the internal space of the center of the rotor of the driving motor can be effectively utilized, and other parts can be effectively integrated into the driving motor for the high-power electric wheel, so that the axial structure size of the electric wheel is effectively shortened, and the purposes of miniaturization and light weight of the electric wheel are achieved;
2. the suspension type single-bearing structure is adopted, so that the structure of the driving motor is simplified, the axial structural size of the driving motor can be greatly reduced, the driving motor can be made into a motor structure with a single supporting rib structure, and a large space is provided for reducing the size of the whole electric wheel and reducing the weight of the electric wheel;
3. the double brakes are integrated beside the driving motor from two sides of the driving motor respectively, the parking brake is extended into the rotor of the driving motor, and the service brake is sleeved outside the shell of the speed reducer, so that the axial distance occupied by the brake is greatly shortened, and the overall structure size of the electric wheel is reduced in a limited space;
4. according to the invention, each component is subjected to light weight treatment, so that the overall weight of the electric wheel can be effectively reduced, and the purpose of light weight is achieved.
Claims (4)
1. The utility model provides a small-size lightweight dual-brake high power heavy load electric wheel assembly which characterized in that: the driving motor, the brake and the speed reducer are integrated together to form a three-in-one electric wheel; the brake is a double brake, namely a service brake and a parking brake, and the service brake and the parking brake are respectively arranged on two sides of the driving motor; the driving motor rotor of the driving motor is a driving motor rotor with a light-weighted structure and two concave side surfaces, the speed reducer and the parking brake respectively extend into the center of the driving motor rotor from two sides of the driving motor to form an inward-protruding connection structure, the service brake is sleeved outside a speed reducer shell on one side of the driving motor close to the speed reducer, and the driving motor, the brake and the speed reducer are all of light-weighted structures; the driving brake is sleeved outside a speed reducer shell on one side, close to the speed reducer, of the driving motor, the driving brake is installed beside an electric wheel hub, a brake friction plate of the driving brake is connected with the electric wheel hub, the electric wheel hub is installed on a hub connecting shaft sleeve connected with an output shaft of the speed reducer and the electric wheel hub, the hub connecting shaft sleeve is of a reverse structure, the electric wheel hub is located at an axial position outside the speed reducer shell, and an electric wheel hub sleeve is formed and is installed outside the speed reducer; the center of the brake disc is made empty, and then the speed reducer is compressed to the position of the empty center of the brake disc; the speed reducer adopts a secondary planetary speed reducing structure to form a secondary planetary speed reducer, and the input and the output of the secondary planetary speed reducer adopt coaxial three-bearing supporting structures; the input shaft of the speed reducer is inserted into the output shaft of the driving motor through a spline, and the output shaft of the speed reducer is inserted into the hub connecting sleeve through a spline; the service brake adopts a three-clamp braking mode, is equally distributed on the circumference of the brake disc, reduces the external volume structure of the service brake under the condition of keeping the braking power by reasonably distributing the braking force of each clamp, and reduces the weight of the brake caliper by lightening the brake caliper so as to achieve the aim of lightening the weight; the lightweight processing of the brake caliper is that according to the characteristics of the brake caliper, on the premise of ensuring the strength of the brake caliper, redundant metal parts are removed, a hydraulic flow channel of the brake caliper is arranged in the brake caliper body, and a pipeline externally arranged on the brake caliper is omitted; the hydraulic flow channel comprises a first flow channel entering the piston from the side surfaces of two ends of the brake caliper body, a second flow channel obliquely entering the piston on the other side from the middle of two ends of the brake caliper body, a two-side communication flow channel communicating the first flow channel and the second flow channel on two sides from the side surface of the brake caliper body, and a cylinder body communication flow channel entering the piston cylinder body from the outside of the piston cylinder body and communicating the piston cylinder body with each cylinder body.
2. The small, lightweight dual-brake high power, heavy-duty electric wheel assembly of claim 1, wherein: the driving motor rotor with the concave-shaped structures on the two side faces for light weight processing removes the edge part and the middle part of the rotor mandrel part which are correspondingly acted with the motor stator for the driving motor rotor, grooves are respectively dug in the driving motor rotor to form a supporting structure for the driving motor rotor by supporting ribs, and the parking brake and the speed reducer respectively extend into the grooves on the two sides of the supporting ribs on the inner face of the driving motor rotor from the two sides of the driving motor.
3. The small, lightweight dual-brake high power, heavy-duty electric wheel assembly of claim 1, wherein: the speed reducer and the driving motor adopt a common end cover structure, and an end cover on one side of the driving motor and an end cover on one side of the speed reducer are connected into a whole to form the common end cover structure; an end cover on one side of the speed reducer extends into the groove position of the driving motor rotor to form that an input shaft of the speed reducer and an output shaft of the driving motor extend into the groove space position in the driving motor rotor to be connected, and a rotor bearing of the driving motor and a planet wheel bearing of the speed reducer are arranged in a bearing seat of the end cover in parallel; the outer ring of the rotor bearing of the driving motor is clamped in the bearing seat of the end cover at one side of the speed reducer, and the inner ring of the rotor bearing of the driving motor is sleeved on the output shaft of the driving motor to form a supporting structure of the coaxial bearing seat of the rotor of the driving motor and the speed reducer.
4. The small, lightweight dual-brake high power, heavy-duty electric wheel assembly of claim 1, wherein: the driving motor is of a hollow structure with light weight, the rotor of the driving motor is subjected to hollowing from two side faces inwards, and only the supporting ribs meeting the strength of the rotor of the motor are reserved in the middle; a structure that the rotor of the driving motor and the speed reducer are supported by a coaxial bearing is adopted to form the driving motor of the structure that the rotor of the driving motor and the speed reducer are supported by the coaxial bearing; and meanwhile, the side surface end cover of the driving motor and the end cover on one side of the speed reducer are combined together to form a common end cover structure, and the end cover of the speed reducer and the side surface end cover of the driving motor are fixedly connected together through a fastening piece.
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| CN202110449146.4A CN113043832B (en) | 2021-04-25 | 2021-04-25 | Small-size light-weight double-brake high-power heavy-load electric wheel assembly |
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| CN202110449146.4A CN113043832B (en) | 2021-04-25 | 2021-04-25 | Small-size light-weight double-brake high-power heavy-load electric wheel assembly |
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| CN113043832B true CN113043832B (en) | 2023-03-10 |
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| CN202110449146.4A Active CN113043832B (en) | 2021-04-25 | 2021-04-25 | Small-size light-weight double-brake high-power heavy-load electric wheel assembly |
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| CN114987193B (en) * | 2022-06-13 | 2022-12-02 | 澎湃动力(北京)科技有限公司 | Wheel hub electric drive device and vehicle |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5796192A (en) * | 1994-08-31 | 1998-08-18 | Riepl; Gerhard | Energy-saving electric drive for small vehicles |
| JP2004328991A (en) * | 2003-04-09 | 2004-11-18 | Nissan Motor Co Ltd | Left and right wheel driving device for vehicle |
| CN2795020Y (en) * | 2005-06-10 | 2006-07-12 | 洛阳北方易初摩托车有限公司 | Motorcycle front wheel double disc braking mechanism |
| CN101947949A (en) * | 2010-09-14 | 2011-01-19 | 陈明洁 | Double-calipers automotive brake |
| JP2013082321A (en) * | 2011-10-11 | 2013-05-09 | Toyota Motor Corp | Wheel braking and driving apparatus |
| CN205686162U (en) * | 2016-04-27 | 2016-11-16 | 吉林大学 | A kind of hub motor device exporting big torque and automobile |
| CN107487175A (en) * | 2017-07-25 | 2017-12-19 | 东风汽车公司 | A kind of integrated type In-wheel motor driving unit |
| CN108973648A (en) * | 2018-01-18 | 2018-12-11 | 山东科技大学 | A kind of integrated inner supporting type hub motor electric wheel |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB201520048D0 (en) * | 2015-11-13 | 2015-12-30 | Caparo Vehicle Products Ltd | Brake calipers |
-
2021
- 2021-04-25 CN CN202110449146.4A patent/CN113043832B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5796192A (en) * | 1994-08-31 | 1998-08-18 | Riepl; Gerhard | Energy-saving electric drive for small vehicles |
| JP2004328991A (en) * | 2003-04-09 | 2004-11-18 | Nissan Motor Co Ltd | Left and right wheel driving device for vehicle |
| CN2795020Y (en) * | 2005-06-10 | 2006-07-12 | 洛阳北方易初摩托车有限公司 | Motorcycle front wheel double disc braking mechanism |
| CN101947949A (en) * | 2010-09-14 | 2011-01-19 | 陈明洁 | Double-calipers automotive brake |
| JP2013082321A (en) * | 2011-10-11 | 2013-05-09 | Toyota Motor Corp | Wheel braking and driving apparatus |
| CN205686162U (en) * | 2016-04-27 | 2016-11-16 | 吉林大学 | A kind of hub motor device exporting big torque and automobile |
| CN107487175A (en) * | 2017-07-25 | 2017-12-19 | 东风汽车公司 | A kind of integrated type In-wheel motor driving unit |
| CN108973648A (en) * | 2018-01-18 | 2018-12-11 | 山东科技大学 | A kind of integrated inner supporting type hub motor electric wheel |
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| CN113043832A (en) | 2021-06-29 |
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