CN110686048B - Vehicle transmission device, vehicle driving system and vehicle - Google Patents

Vehicle transmission device, vehicle driving system and vehicle Download PDF

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Publication number
CN110686048B
CN110686048B CN201810725269.4A CN201810725269A CN110686048B CN 110686048 B CN110686048 B CN 110686048B CN 201810725269 A CN201810725269 A CN 201810725269A CN 110686048 B CN110686048 B CN 110686048B
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China
Prior art keywords
gear
ring
output
input
transmission
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CN201810725269.4A
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CN110686048A (en
Inventor
刘静
王逢春
华煜
柴领道
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BYD Co Ltd
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BYD Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
    • F16H1/32—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
    • 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
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
    • B60K17/06—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of change-speed gearing
    • B60K17/08—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of change-speed gearing of mechanical type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/02—Toothed gearings for conveying rotary motion without gears having orbital motion
    • F16H1/20—Toothed gearings for conveying rotary motion without gears having orbital motion involving more than two intermeshing members
    • F16H1/22—Toothed gearings for conveying rotary motion without gears having orbital motion involving more than two intermeshing members with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts
    • F16H1/227—Toothed gearings for conveying rotary motion without gears having orbital motion involving more than two intermeshing members with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts comprising two or more gearwheels in mesh with the same internally toothed wheel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly

Abstract

The invention discloses a vehicle transmission device, a vehicle driving system and a vehicle, wherein the vehicle transmission device comprises a speed reducing mechanism, and the speed reducing mechanism comprises: the power source comprises an input gear and an output gear ring, wherein the input gear is suitable for being connected with a power source, and the output gear ring is used for outputting power; the input gear, the first shunt gear set and the second shunt gear set are all arranged in the output gear ring, the first shunt gear set is meshed with the input gear and the output gear ring, the second shunt gear set is meshed with the input gear and the output gear ring, and the input gear is spaced from the output gear ring. According to the vehicle transmission device, the first shunt gear set and the second shunt gear set can shunt the power input by the input gear, and the power is transmitted to the output gear ring through the first shunt gear set and the second shunt gear set, so that the stress of the output gear ring is dispersed.

Description

Vehicle transmission device, vehicle driving system and vehicle
Technical Field
The invention relates to the technical field of vehicle manufacturing, in particular to a vehicle transmission device, a vehicle driving system with the vehicle transmission device and a vehicle with the vehicle driving system.
Background
A vehicle drive system of an automobile includes a vehicle transmission device, which is generally used to reduce speed and increase torque of power output from a power source, and further output the power to a hub of a wheel. In the related technology, the gear rings of the speed reducing mechanism of the vehicle transmission device are concentrated, the requirements on the rigidity and the strength of the gear rings are high, the distance between an input shaft and an output shaft is too small, the speed ratio range of the speed reducing mechanism is small, and the type selection and the arrangement of a power source are not facilitated.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention aims to provide a vehicle transmission device, which can realize three-stage flow division, has dispersed stress on a gear ring and low strength requirement.
A vehicle transmission according to an embodiment of the present invention includes a speed reduction mechanism including: the power source comprises an input gear and an output gear ring, wherein the input gear is suitable for being connected with a power source, and the output gear ring is used for outputting power; the input gear, the first shunt gear set, the second shunt gear set and the transmission gear are all arranged in the output gear ring, the first shunt gear set is meshed with the input gear and the transmission gear, the second shunt gear set is meshed with the input gear and the transmission gear, and the first shunt gear set, the second shunt gear set and the transmission gear are all meshed with the output gear ring.
According to the vehicle transmission device provided by the embodiment of the invention, the first shunting gear set and the second shunting gear set can shunt the power input by the input gear, and the power is shunted in three stages through the transmission gear, so that the local stress of the gear is effectively reduced by the output gear ring, the service lives of the input gear and the output gear ring are prolonged, the safety and the stability of the vehicle transmission device are improved, the radial size of the vehicle transmission device is small, the overall structure is compact, the bearing capacity is high, and the speed ratio adjustable range is large.
According to the vehicle transmission device of one embodiment of the present invention, the first splitter gear set includes a first front end gear and a first rear end gear, the input gear, the output ring gear, and the first rear end gear are all meshed with the first front end gear, and the first rear end gear is meshed with the transmission gear; the second shunt gear set comprises a second front end gear and a second rear end gear, the input gear, the output gear ring and the second rear end gear are all meshed with the second front end gear, and the second rear end gear is meshed with the transmission gear.
According to the vehicle transmission device of one embodiment of the present invention, the respective rotation shafts of the first front end gear, the second front end gear, and the transmission gear are provided in a floating manner.
According to the vehicle transmission of one embodiment of the present invention, the center of the input gear and the center of the output ring gear are respectively arranged on both sides of a line connecting the center of the first front end gear and the center of the second front end gear.
According to the vehicle transmission of one embodiment of the present invention, the center of the input gear, the center of the first front end gear, and the center of the second front end gear are collinear.
According to the vehicle transmission device of one embodiment of the present invention, the first rear end gear, the second rear end gear, and the input gear are mounted to the same carrier.
According to the vehicle transmission of one embodiment of the present invention, the first splitter gear set and the second splitter gear set are respectively arranged on both sides of a line connecting a center of the input gear and a center of the output ring gear.
According to the vehicle transmission of one embodiment of the present invention, the first and second splitter gear sets are identical in structure, and are symmetrically arranged with respect to a line connecting the center of the input gear and the center of the output ring gear.
According to the vehicle transmission of one embodiment of the present invention, the center of the input gear, the center of the output ring gear, and the center of the transmission gear are collinear.
According to the vehicle transmission of one embodiment of the present invention, the input gear, the output ring gear, the first splitter gear set, the second splitter gear set, and the transmission gear are disposed in a coplanar arrangement.
A vehicle transmission according to an embodiment of the present invention further includes a planetary gear mechanism including: the planetary gear set comprises a first element, a second element and a third element, wherein the first element is a sun gear, one of the second element and the third element is a planet carrier, the other one of the second element and the third element is a gear ring, the first element is connected with the output gear ring, the second element is used for being fixed with a hub of a wheel, and the third element is fixed.
According to the vehicle transmission of one embodiment of the present invention, the reduction mechanism includes a first housing, the input gear, the output ring gear, and the split gear set are all provided in the first housing, and the third element is fixed to the first housing.
According to the vehicle transmission of one embodiment of the present invention, the planetary gear mechanism includes a second housing, the first element, the second element, and the third element are each provided in the second housing, and the third element is fixed to the second housing.
According to the vehicle transmission of one embodiment of the present invention, the third member is a ring gear, and the second housing inner wall has a circle of internal teeth that constitute the ring gear.
A vehicle transmission according to an embodiment of the present invention further includes: and the transmission shaft is connected with the output gear ring and is connected with the first element.
The invention also provides a vehicle driving system.
A vehicle drive system according to an embodiment of the invention includes: a power source: in the vehicle transmission according to any of the above embodiments, the input gear is connected to the power source.
According to the vehicle drive system of one embodiment of the invention, the power source includes a wheel-side motor provided with an external spline, and the input gear is provided with an internal spline that is fitted with the external spline.
The invention further provides a vehicle.
According to one embodiment of the invention, the vehicle comprises the vehicle driving system of any one of the embodiments.
The vehicle driving system and the vehicle have the same advantages as the vehicle transmission device in comparison with the prior art, and are not described in detail herein.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic block diagram of a vehicle transmission according to one embodiment of the present invention;
FIG. 2 is a schematic diagram of the engagement of a reduction mechanism of a vehicle transmission according to one embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a reduction mechanism of a vehicle transmission according to an embodiment of the present invention;
FIG. 4 is a schematic structural view of a speed reducing mechanism of a vehicle transmission according to another embodiment of the present invention;
fig. 5 is a schematic structural view of a vehicle transmission according to another embodiment of the present invention.
In a vehicle transmission 100, a transmission for a vehicle,
the reduction mechanism 1, the input gear 11, the output ring gear 13, the first split gear set 15, the first front end gear 151, the first rear end gear 152, the second split gear set 17, the second front end gear 171, the second rear end gear 172, the transfer gear 18,
the planetary gear mechanism 3, the carrier 31, the planet wheels 32, the ring gear 33, the sun gear 35,
the transmission shaft (5) is provided with a transmission shaft,
a hub 101 of a wheel, and a power source 102.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
A vehicle transmission 100 according to an embodiment of the invention is described below with reference to fig. 1 to 5.
As shown in fig. 1 to 5, a vehicle transmission 100 according to an embodiment of the present invention includes a reduction mechanism 1, the reduction mechanism 1 including: an input gear 11, an output ring gear 13, a first splitter gear set 15, a second splitter gear set 17, and a transfer gear 18. The input gear 11, the transmission gear 18, the first splitter gear set 15, and the second splitter gear set 17 are all external gears, and the output gear ring 13 is an internal gear ring.
The input gear 11 is adapted to be connected with a power source 102, the power source 102 can input power to the vehicle transmission 100 through the input gear 11, the output ring gear 13 is used for outputting power, and the vehicle transmission 100 can output power from the power source 102 to the wheel hub 101 of the wheel through the output ring gear 13 to drive the vehicle to run. The power source 102 may include a driving motor, and an output end of the power source 102 may be engaged with the input gear 11 to input power to the vehicle transmission device 100 in a form of torque, so that the output power of the power source 102 may be adjusted by the speed reduction and torque increase of the vehicle transmission device 100, and further, the speed of the vehicle may be adjusted, so that the vehicle may effectively meet the power requirements of different operating conditions. The vehicle transmission 100 of the embodiment of the invention may be a wheel-side transmission, and the corresponding power source 102 may be a wheel-side power source.
As shown in fig. 3, the input gear 11, the first splitter gear set 15, the second splitter gear set 17, and the drive gear 18 are all disposed within the output ring gear 13, so that the overall size of the vehicle transmission 100 is small, which facilitates reducing the duty ratio of the vehicle transmission 100, while making the internal structure of the vehicle transmission 100 more compact.
The first split gear set 15 is meshed with the input gear 11 and the transmission gear 18, the second split gear set 17 is meshed with the input gear 11 and the transmission gear 18, namely, the first split gear set 15 and the second split gear set 17 are both meshed with the input gear 11, the first split gear set 15 and the second split gear set 17 are both meshed with the transmission gear 18, and the first split gear set 15, the second split gear set 17 and the transmission gear 18 are all meshed with the output gear ring 13. Thus, the power source 102 inputs power to the input gear 11, and the input gear 11 transmits part of the power to the transmission gear 18 and further to the output ring gear 13 through the first split gear set 15 and the second split gear set 17, and simultaneously transmits the rest of the power to the output ring gear 13 directly. The first split gear set 15, the second split gear set 17 and the transmission gear 18 are all in inner meshing with the output gear ring 13, and the bearing capacity of the inner meshing is high, so that power transmission among the first split gear set 15, the second split gear set 17, the transmission gear 18 and the output gear ring 13 is more stable. While reducing the radial dimension, the vehicle transmission 100 is compact and has high load carrying capacity.
The input gear 11 and the output gear ring 13 realize power transmission through a first split gear set 15, a second split gear set 17 and a transmission gear 18, that is, the input gear 11 divides the power output by the power source 102 into two parts and transmits the two parts to the first split gear set 15 and the second split gear set 17 respectively, the first split gear set 15 and the second split gear set 17 are both meshed with the transmission gear 18 and are meshed with the output gear ring 13, the first split gear set 15 and the second split gear set 17 directly transmit the power parts transmitted respectively to the output gear ring 13, and the rest parts are output to the output gear ring 13 through the transmission gear 18, so that three-stage split function is realized.
Therefore, the power between the output gear 11 and the output ring gear 13 is transmitted in a multipath manner, so that the local stress of the output ring gear 13 can be reduced, correspondingly, the strength requirement of the output ring gear 13 can be reduced, namely, the processing technology of the output ring gear 13 can be reduced, and the manufacturing cost is further reduced. The local stress of the input gear 11 and the output gear ring 13 is small, so that the stress of each part of the output gear ring 13 is dispersed, the meshing failure caused by the tooth fracture of the input gear 11 and the output gear ring 13 is avoided, the service lives of the input gear 11 and the output gear ring 13 are prolonged, the safety and the stability of the vehicle transmission device 100 are improved, a vehicle driving system with the vehicle transmission device 100 can be effectively used for a long time, meanwhile, the requirement on the strength of each part of the speed reducing mechanism 1 is low, and the production is convenient.
In this way, the power of the power source 102 can be output through the input gear 11, the first and second split gear sets 15 and 17, the transfer gear 18, the output ring gear 13, and gradually to the hub 101 of the wheel. The transmission route of the vehicle transmission device 100 is simple, the cost of the whole device is reduced, the transmission path of the gear is reduced, the transmission efficiency is high, the heat is low, the peripheral lubricating and cooling system is also helped, the overall structure of the vehicle transmission device 100 is compact, the stress of the gear is small after power split, the bearing is protected, the system stability is strong, and the NVH performance is advantageous.
The input gear 11 is spaced from the output gear ring 13, and the input gear 11 is spaced from the transmission gear ring 14 without being meshed, so that the size of the input gear 11 is adjustable, the speed ratio of the vehicle transmission device 100 can be changed by adjusting the size of the input gear 11, the relative positions of the input gear 11 and the output gear ring 13 can be adjusted, namely, the center distance between the input gear 11 and the output gear ring 13 can be adjusted, the mounting precision requirements of the input gear 11 and the output gear ring 13 are reduced, the assembling time of the vehicle transmission device 100 is saved, and the assembling efficiency is improved.
According to the vehicle transmission device 100 of the embodiment of the invention, the first shunting gear set 15 and the second shunting gear set 17 can shunt the power input by the input gear 11, and the power is shunted in three stages through the transmission gear 18, so that the local stress of the gear is effectively reduced by the output gear ring 13, the service lives of the input gear 11 and the output gear ring 13 are prolonged, the safety and the stability of the vehicle transmission device 100 are improved, the radial size of the vehicle transmission device 100 is small, the overall structure is compact, the bearing capacity is high, the speed ratio adjustable range is wide, the adjusting space of the position of the output gear ring 13 is very large, the adjustment of the distance between the input shaft and the output shaft is very advantageous, and the power source selection and the peripheral arrangement of the vehicle transmission device 100 are facilitated.
In some embodiments, as shown in fig. 3 and 4, the first splitter gear set 15 includes a first front end gear 151 and a first rear end gear 152, the input gear 11, the output ring gear 13, and the first rear end gear 152 are all meshed with the first front end gear 151, and the first rear end gear 152 is meshed with the transmission gear 18. The first front end gear 151 divides the power transmitted by the input gear 11 into two parts: a part is directly transmitted to the output ring gear 13 by meshing with the output ring gear 13; the other part is transmitted to the transmission gear 18 by meshing with the first rear end gear 152 and then further transmitted to the output gear ring 13, so that the power transmitted by the first front end gear 151 is transmitted to other parts through two meshing positions, the local bearing capacity of the first front end gear 151 is greatly reduced, the stress of the first front end gear 151 is dispersed, meshing failure caused by tooth breakage of the first front end gear 151 is avoided, the service life of the first front end gear 151 is prolonged, the safety and the stability of the speed reducing mechanism 1 are improved, and the vehicle transmission device 100 with the speed reducing mechanism 1 can be effectively used for a long time.
As shown in fig. 3 and 4, the second split gear set 17 includes a second front end gear 171 and a second rear end gear 172, the input gear 11, the output ring gear 13, and the second rear end gear 172 are all meshed with the second front end gear 171, and the second rear end gear 172 is meshed with the transmission gear 18. The second front end gear 171 divides the power transmitted by the input gear 11 into two parts: a part is directly transmitted to the output ring gear 13 by meshing with the output ring gear 13; the other part is transmitted to the transmission gear 18 by meshing with the second rear end gear 172 and then further transmitted to the output gear ring 13, so that the second front end gear 171 transmits the power transmitted by itself to other parts through two meshing positions, the local bearing capacity of the second front end gear 171 is greatly reduced, the stress of the second front end gear 171 is dispersed, meshing failure caused by tooth breakage of the second front end gear 171 is avoided, the service life of the second front end gear 171 is prolonged, the safety and the stability of the speed reduction mechanism 1 are improved, and the vehicle transmission device 100 with the speed reduction mechanism 1 can be effectively used for a long time.
In some embodiments, the respective rotation shafts of the first front end gear 151, the second front end gear 171, and the transmission gear 18 are provided in a floating manner. Namely, the relative positions of the first front end gear 151, the second front end gear 171 and the transmission gear 18 are adjustable, so that the meshing positions of the first rear end gear 152, the input gear 11, the output gear ring 13 and the first front end gear 151 are adjustable, the meshing positions of the second rear end gear 172, the input gear 11, the output gear ring 13 and the second front end gear 171 are adjustable, and the meshing positions of the first rear end gear 152, the second rear end gear 172, the output gear ring 13 and the transmission gear 18 are adjustable, so that the respective relative stress is more uniform, the requirement on the system processing precision is low, the assembly requirement is low, and the production and the installation are convenient.
In some embodiments, the center of the input gear 11 and the center of the output ring gear 13 are respectively disposed on both sides of a line connecting the centers of the first and second front end gears 151 and 171, so that the centers of the input gear 11 and the output ring gear 13 are spaced apart from each other, and the meshing positions of the input gear 11 or the output ring gear 13 with the centers of the first and second front end gears 151 and 171 can be adjusted by adjusting the relative positions of the centers of the first and second front end gears 151 and 171, by changing the spacing between the centers of the input gear 11 and the output ring gear 13, thereby providing possibilities for power source selection diversity, making the layout of the overall structure of the vehicular transmission 100 more flexible.
In one embodiment, the center of the input gear 11, the center of the first front end gear 151, and the center of the second front end gear 171 are collinear, as shown in fig. 4, the center of the input gear 11, the center of the first front end gear 151, and the center of the second front end gear 171 are all located on the same straight line, and the input gear 11 is located between the first front end gear 151 and the second front end gear 171, so that the radial force of the first front end gear 151 on the input gear 11 and the radial force of the second front end gear 171 on the input gear 11 are equal in magnitude and opposite in direction, so that the radial force of the first front end gear 151 on the input gear 11 and the radial force of the second front end gear 171 on the input gear 11 cancel each other, and the reduction mechanism 1 is more stable.
In some embodiments, the first rear gear 152, the second rear gear 172 and the input gear 11 are mounted on the same planet carrier 31, that is, the relative positions of the first rear gear 152, the second rear gear 172 and the input gear 11 are fixed, so that the first rear gear 152, the second rear gear 172 and the input gear 11 can be stably engaged, and the power transmission between the first rear gear 152, the second rear gear 172 and the input gear 11 is stable and accurate.
In some embodiments, as shown in fig. 3, the first splitter gear set 15 and the second splitter gear set 17 are respectively disposed on two sides of a connecting line between the center of the input gear 11 and the center of the output ring gear 13, so that the first splitter gear set 15 and the second splitter gear set 17 are respectively engaged with positions on different sides of the input gear 11 or the output ring gear 13, which can make the stress on two sides of the input gear 11 or the output ring gear 13 uniform, avoid local damage caused by excessive concentration of engaging stress of the input gear 11 or the output ring gear 13, prolong the service life of the input gear 11 or the output ring gear 13, and improve the stability of the overall structure of the vehicle transmission 100.
In some embodiments, as shown in fig. 3 and 4, the first and second splitter gear sets 15 and 17 are identical in construction, namely, the materials and the specific production procedures required by the production of the first splitter gear set 15 and the second splitter gear set 17 are the same, the processing and storage difficulty is reduced, the production cost is greatly reduced, and the first and second splitter gear sets 15 and 17 are symmetrically arranged about a line connecting the center of the input gear 11 and the center of the output ring gear 13, the line connecting the center of the input gear 11 and the center of the output ring gear 13 is along the up-down direction in fig. 3, and the first and second splitter gear sets 15 and 17 are symmetrically arranged left and right in fig. 3, so that the overall structural arrangement of the vehicle transmission device 100 is more regular and convenient to install, and the left and right sides of the input gear 11 and the output gear ring 13 are stressed in a balanced manner, the structure is stable, and the long-term use is facilitated.
In some embodiments, as shown in fig. 4, the center of the output gear 13, the center of the transmission gear ring 14 and the center of the input gear 11 are collinear, that is, the center of the output gear 13, the center of the transmission gear ring 14 and the center of the input gear 11 are all located on the same straight line, as shown in fig. 3 and 4, the center of the output gear 13, the center of the transmission gear ring 14 and the center of the input gear 11 are sequentially spaced in the up-down direction, so that the arrangement of the output gear 13, the input gear 11 and the transmission gear ring 14 is more regular.
In some embodiments, as shown in fig. 3 and 4, the input gear 11, the output ring gear 13, the first splitter gear set 15, the second splitter gear set 17, and the transmission gear 18, that is, the input gear 11, the output ring gear 13, the first splitter gear set 15, the second splitter gear set 17, and the transmission gear 18 are all located in the same plane, so that the duty ratio of the vehicle transmission device 100 is greatly reduced, the overall structure of the wheel-rim gear reduction system is more compact, the power of the wheel-rim gear reduction system is transmitted only in the plane, the force transmission is more accurate and stable, and the power loss is less.
The vehicle transmission 100 according to the embodiment of the invention further includes a planetary gear mechanism 3, and as shown in fig. 1 and 5, the planetary gear mechanism 3 includes: a first member, which is a sun gear 35, one of the second member and the third member, which is a carrier 31 and the other is a ring gear 33, is connected to the output gear 13, the second member is for fixation to a hub 101 of a wheel to transmit power to the hub 101 of the wheel, and the third member is fixed.
As shown in fig. 1 and fig. 5, the planetary gear mechanism 3 may further include a plurality of planetary gears 32, the plurality of planetary gears 32 may be pivotally connected to the planet carrier 31, when a sun gear 35 of the plurality of planetary gears 32 rotates, the sun gear 35 drives the corresponding planetary gear 32 to rotate, and the planet carrier 31 corresponding to the planetary gear 32 may selectively rotate. If the ring gear 33 is fixed and the planet carrier 31 is not fixed, the sun gear 35 inputs, the planet gear 32 rotates and drives the planet carrier 31 to output; when the planet carrier 31 is fixed and the gear ring 33 is not fixed, the sun gear 35 inputs, the planet gear 32 rotates and drives the gear ring 33 to output; when the planet carrier 31 and the gear ring 33 are not fixed, the sun gear 35 and the gear ring 33 are input, and the planet gear 32 rotates and drives the planet carrier 31 to output; when the planet carrier 31 and the ring gear 33 are not fixed, the sun gear 35 and the planet carrier 31 input, the planet gear 32 rotates and drives the ring gear 33 to output.
The planetary gear mechanism 3 can transmit the power output by the speed reducing mechanism 1 to a hub 101 of a wheel, wherein a first element can be used as an input element of the planetary gear mechanism 3, a second element is an output element of the planetary gear mechanism 3, and a third element is a transmission element between the first element and the second element, so that the power of the output gear 13 is sequentially transmitted to the hub of the gear through the first element, the third element and the second element, power transmission is realized, the vehicle transmission device 100 can stably and effectively transmit the power output by the power source 102 to the hub of the gear, and then the gear is driven to rotate, and vehicle driving is realized.
In the embodiment shown in FIG. 1, the second member is the carrier 31 and the third member is the ring gear 33, i.e., the carrier 31 is the output member. In the embodiment shown in FIG. 5, the second member is the ring gear 33 and the third member is the carrier 31, i.e., the ring gear 33 is the output member. Therefore, the fixing forms of the planet carrier 31, the gear ring 33 and the sun gear 35 are flexible, the connection mode is not single, the power transmission between the output gear 13 and the hub 101 of the wheel can be realized, the flexibility and the multiple selection are good, and the installation is more convenient.
In some embodiments, the speed reducing mechanism 1 includes a first housing, the input gear 11, the output gear 13, and the split gear set are all disposed in the first housing, and the first housing can play a good role in protecting the operation of the input gear 11, the output gear 13, and the split gear set, so that the power transmission among the input gear 11, the output gear 13, and the split gear set is not affected by environmental characteristics outside the first housing, thereby ensuring that each component in the first housing is engaged stably, and improving the integrity of the speed reducing mechanism 1 and the accuracy of transmission. The third element is fixed to the first housing, so that the reduction mechanism 1 and the planetary gear mechanism 3 are effectively connected, and stable transmission of the reduction mechanism 1 and the planetary gear mechanism 3 is ensured.
The planetary gear mechanism 3 comprises a second shell, the first element, the second element and the third element are arranged in the second shell, and the second shell can play a good protection role in operation of the first element, the second element and the third element, so that power transmission among the first element, the second element and the third element is not influenced by environmental characteristics outside the second shell, meshing stability of the first element, the second element and the third element is guaranteed, and integrity and transmission accuracy of the planetary gear mechanism 3 are improved. The third element is fixed with the second housing, and thus, the second housing and the first housing are both connected and fixed with the third element. The speed reducing mechanism 1 and the planetary gear mechanism 3 are effectively and stably connected, stable transmission of the speed reducing mechanism 1 and the planetary gear mechanism 3 is guaranteed, the speed reducing and torque increasing effects of the vehicle transmission device 100 are conveniently achieved, and power output by the power source 102 is effectively transmitted to the wheel hub 101 of the wheel.
As shown in fig. 1, the third element is a ring gear 33, the first and second housings are fixed to the ring gear 33, a circle of internal teeth is formed on the inner wall of the second housing, the internal teeth form the ring gear 33, and the ring gear 33 is engaged with the planetary gears mounted on the carrier 31, so as to realize the transmission function of the planetary gear mechanism 3.
As shown in fig. 1 and 4, the vehicle transmission device 100 further includes a transmission shaft 5, the transmission shaft 5 is connected to the output gear 13, the transmission shaft 5 is connected to the first element, the transmission shaft 5 is connected to the sun gear 35, that is, two ends of the transmission shaft 5 are respectively connected to the output gear 13 and the sun gear 35, so as to transmit the power output by the speed reduction mechanism 1 to the planetary gear mechanism 3, wherein the transmission shaft 5 may be supported by the first housing or the second housing through a bearing, so as to reduce the rotational friction force of the transmission shaft 5 during the transmission process, avoid excessive friction loss during the rotation process, improve the transmission efficiency of the vehicle transmission device 100, and ensure the accuracy of the transmission.
The invention also provides a vehicle driving system.
A vehicle drive system according to an embodiment of the invention includes: the power source 102 and the vehicle transmission device 100 of any of the above embodiments, the input gear 11 is connected to the power source 102, and the power source 102 can transmit the output power to the vehicle transmission device 100 through the input gear 11, and after the speed reduction and torque increase of the vehicle transmission device 100, the output power is transmitted to the hub 101 of the wheel to drive the wheel to rotate, so as to realize the driving of the vehicle.
In some embodiments, the power source 102 includes a wheel-side motor, the wheel-side motor is provided with an external spline, for example, an output shaft of the wheel-side motor is provided with an external spline, the input gear 11 is provided with an internal spline, and the internal spline is matched with the external spline, so that the output shaft of the wheel-side motor and the input gear 11 are relatively fixed in the circumferential direction, and it is ensured that the torque output by the wheel-side motor can be effectively supplied to the input gear 11 through the spline, and then transmitted to the hub 101 of the wheel through the vehicle transmission device 100.
The invention also provides a vehicle.
According to the vehicle of the embodiment of the invention, the vehicle driving system comprising any one of the embodiments has the advantages that the vehicle transmission device 100 has good safety and stability, the radial size of the vehicle transmission device 100 is small, and the overall structure is compact. The three-level flow distribution enables the bearing capacity of the speed reducing mechanism 1 to be higher, the speed ratio adjustable range is large, the integral use performance is favorably improved, and the cost performance of the whole vehicle is improved.
In the description of the present invention, "a plurality" means two or more.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (18)

1. A vehicle transmission characterized by comprising a speed reduction mechanism, said speed reduction mechanism comprising:
the power source comprises an input gear and an output gear ring, wherein the input gear is suitable for being connected with a power source, and the output gear ring is used for outputting power;
the input gear, the first shunt gear set, the second shunt gear set and the transmission gear are all arranged in the output gear ring, the first shunt gear set is meshed with the input gear and the transmission gear, the second shunt gear set is meshed with the input gear and the transmission gear, and the first shunt gear set, the second shunt gear set and the transmission gear are all meshed with the output gear ring.
2. The vehicle transmission of claim 1, wherein the first splitter gear set includes a first front end gear and a first rear end gear, the input gear, the output ring gear, and the first rear end gear each meshing with the first front end gear, the first rear end gear meshing with the drive gear;
the second shunt gear set comprises a second front end gear and a second rear end gear, the input gear, the output gear ring and the second rear end gear are all meshed with the second front end gear, and the second rear end gear is meshed with the transmission gear.
3. The vehicle transmission according to claim 2, wherein respective rotation shafts of the first front end gear, the second front end gear, and the transmission gear are provided in a floating manner.
4. The vehicle transmission according to claim 2, characterized in that the center of the input gear and the center of the output ring gear are respectively arranged on both sides of a line connecting the center of the first front end gear and the center of the second front end gear.
5. The vehicle transmission of claim 2, wherein a center of the input gear, a center of the first front end gear, and a center of the second front end gear are collinear.
6. The vehicle transmission of claim 2, wherein the first rear end gear, the second rear end gear, and the input gear are mounted to the same carrier.
7. The vehicle transmission of claim 1, wherein the first splitter gear set and the second splitter gear set are disposed on either side of a line connecting a center of the input gear and a center of the output ring gear, respectively.
8. The vehicle transmission of claim 7, wherein the first and second splitter gear sets are identical in construction, and are symmetrically arranged about a line connecting the center of the input gear and the center of the output ring gear.
9. The vehicle transmission of claim 1, wherein a center of the input gear, a center of the output ring gear, and a center of the transmission gear are collinear.
10. The vehicle transmission of claim 1, wherein said input gear, said output ring gear, said first splitter gear set, said second splitter gear set, and said drive gear are disposed in a common plane.
11. The vehicle transmission of any of claims 1-10, further comprising a planetary gear mechanism, the planetary gear mechanism comprising: the planetary gear set comprises a first element, a second element and a third element, wherein the first element is a sun gear, one of the second element and the third element is a planet carrier, the other one of the second element and the third element is a gear ring, the first element is connected with the output gear ring, the second element is used for being fixed with a hub of a wheel, and the third element is fixed.
12. The vehicle transmission of claim 11, wherein the reduction mechanism includes a first housing, the input gear, the output ring gear, the first splitter gear set, and the second splitter gear set are each disposed within the first housing, and the third element is fixed with the first housing.
13. The vehicle transmission of claim 11, wherein the planetary gear mechanism includes a second housing, the first element, the second element, and the third element each being disposed within the second housing, the third element being fixed with the second housing.
14. The vehicle transmission of claim 13, wherein the third member is a ring gear, and the second housing inner wall defines a ring of internal teeth that form the ring gear.
15. The vehicle transmission of claim 11, further comprising: and the transmission shaft is connected with the output gear ring and is connected with the first element.
16. A vehicle drive system, comprising:
a power source;
the vehicle transmission of any of claims 1-15, said input gear being connected to said power source.
17. The vehicle drive system of claim 16, wherein the power source includes a wheel-side motor provided with external splines, and the input gear is provided with internal splines that mate with the external splines.
18. A vehicle comprising a vehicle drive system as claimed in claim 16 or 17.
CN201810725269.4A 2018-07-04 2018-07-04 Vehicle transmission device, vehicle driving system and vehicle Active CN110686048B (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1189178A (en) * 1997-09-08 1999-03-30 Meidensha Corp In-wheel motor for electric vehicle
WO2001063146A1 (en) * 2000-02-28 2001-08-30 Yamaha Hatsudoki Kabushiki Kaisha Drive unit of electric vehicle
CN101245831A (en) * 2007-09-07 2008-08-20 湖南江麓容大车辆传动有限责任公司 Double-planet wheel type reversing mechanism
CN201549972U (en) * 2009-09-29 2010-08-11 比亚迪股份有限公司 Hub motor system and vehicle including same
CN104175862A (en) * 2014-08-25 2014-12-03 安徽工程大学 Electric-car wheel-edge driving system and control method thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1189178A (en) * 1997-09-08 1999-03-30 Meidensha Corp In-wheel motor for electric vehicle
WO2001063146A1 (en) * 2000-02-28 2001-08-30 Yamaha Hatsudoki Kabushiki Kaisha Drive unit of electric vehicle
CN101245831A (en) * 2007-09-07 2008-08-20 湖南江麓容大车辆传动有限责任公司 Double-planet wheel type reversing mechanism
CN201549972U (en) * 2009-09-29 2010-08-11 比亚迪股份有限公司 Hub motor system and vehicle including same
CN104175862A (en) * 2014-08-25 2014-12-03 安徽工程大学 Electric-car wheel-edge driving system and control method thereof

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