CN115257334A - Double-motor multi-gear parallel shaft drive axle and automobile - Google Patents

Double-motor multi-gear parallel shaft drive axle and automobile Download PDF

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Publication number
CN115257334A
CN115257334A CN202210914987.2A CN202210914987A CN115257334A CN 115257334 A CN115257334 A CN 115257334A CN 202210914987 A CN202210914987 A CN 202210914987A CN 115257334 A CN115257334 A CN 115257334A
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CN
China
Prior art keywords
gear
motor
differential
assembly device
adjusting member
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210914987.2A
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Chinese (zh)
Inventor
冯涛
陈鑫海
崔均强
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FAW Jiefang Automotive Co Ltd
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FAW Jiefang Automotive Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by FAW Jiefang Automotive Co Ltd filed Critical FAW Jiefang Automotive Co Ltd
Priority to CN202210914987.2A priority Critical patent/CN115257334A/en
Publication of CN115257334A publication Critical patent/CN115257334A/en
Pending legal-status Critical Current

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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
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K1/02—Arrangement or mounting of electrical propulsion units comprising more than one electric motor
    • 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
    • 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
    • B60B35/121—Power-transmission from drive shaft to hub
    • B60B35/122—Power-transmission from drive shaft to hub using gearings
    • 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
    • B60B35/121—Power-transmission from drive shaft to hub
    • B60B35/122—Power-transmission from drive shaft to hub using gearings
    • B60B35/125—Power-transmission from drive shaft to hub using gearings of the planetary type
    • 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
    • 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
    • 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
    • B60K17/16—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of differential gearing

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Retarders (AREA)

Abstract

The invention relates to a double-motor multi-gear parallel shaft drive axle and an automobile, wherein the double-motor multi-gear parallel shaft drive axle comprises a speed reducer assembly device and a differential mechanism assembly device, the speed reducer assembly device comprises a first motor and a second motor, and the first motor and the second motor are arranged in series; the differential assembly device is used for being connected with a hub of an automobile and is connected with the output end of the speed reducer assembly device; wherein the first and second electric machines are configured to simultaneously power the retarder assembly means. The invention provides power by the first motor and the second motor together so as to improve the overall obtained power.

Description

Double-motor multi-gear parallel shaft drive axle and automobile
Technical Field
The invention relates to the technical field of automobile axles, in particular to a double-motor multi-gear parallel shaft drive axle. In addition, still relate to a car including two motors multispeed parallel shaft transaxles.
Background
In the domestic parallel shaft electric drive axle, adopt motor drive to through the vice cooperation of a plurality of cylindrical gears, realize speed reduction, shift gears function, and the parallel shaft electric drive axle is less through motor drive's power at present, and transmission efficiency is low.
Disclosure of Invention
Therefore, it is necessary to provide a dual-motor multi-gear parallel axle drive axle to solve the problem of small power of the parallel axle drive axle.
A dual-motor multi-gear parallel shaft drive axle, comprising:
the speed reducer assembly device comprises a first motor and a second motor, wherein the first motor and the second motor are arranged in series;
the differential assembly device is used for being connected with a hub of an automobile and is connected to the output end of the speed reducer assembly device;
wherein the first and second electric machines are configured to simultaneously power the retarder assembly arrangement.
In one embodiment, the reducer assembly device includes a planetary gear device connected to the first electric machine and the second electric machine, a first adjusting member for adjusting an output state of the planetary gear device is connected to an outside of a first carrier of the planetary gear device, and the first adjusting member is detachably connected to a sun gear of the planetary gear device and the first electric machine.
In one embodiment, the inner circumference of the first adjusting member is provided with first spline holes along both ends of the axial direction thereof, and the first planet carrier, the sun gear and the first motor are provided with first spline shafts;
the first planet carrier, the sun gear and the first spline shaft of the first motor are all slidably connected with the first spline hole so as to connect one or two of the first planet carrier, the sun gear and the first motor with the first adjusting piece.
In one embodiment, the first adjustment member is externally provided with a first fork configured to slide the first adjustment member.
In one embodiment, a first gear is connected to one side of the planetary gear device; the differential assembly arrangement includes a second gear; the first gear and the second gear are each configured as cylindrical gears; and the first gear is engaged with the second gear.
In one embodiment, a third gear is connected to one side of the planetary gear device, the differential assembly device comprises a fourth gear, the third gear and the fourth gear are both configured as cylindrical gears, and the third gear and the fourth gear are meshed.
In one embodiment, the transmission ratios of the first gear and the second gear and the transmission ratios of the third gear and the fourth gear are different, and a second adjusting member is connected to the outside of a differential middle shell of the differential assembly device, and the second adjusting member is detachably connected to the second gear and the fourth gear respectively.
In one embodiment, the inner periphery of the second adjusting member is provided with a second spline hole, and the differential middle shell, the second gear and the fourth gear are provided with a second spline shaft;
the second splined shaft of the differential center housing, the second gear and the fourth gear are slidably connected to the second splined bore to connect one or both of the differential center housing, the second gear and the fourth gear to the second adjustment member.
In one embodiment, the second adjustment member is externally provided with a second fork configured to slide the second adjustment member.
An automobile, comprising:
the double-motor multi-gear parallel shaft drive axle is as described above.
The double-motor multi-gear parallel shaft drive axle comprises a speed reducer assembly device and a differential mechanism assembly device, wherein the speed reducer assembly device comprises a first motor and a second motor which are arranged in series, and the speed reducer assembly device is connected with the differential mechanism assembly device.
In the use process, the first motor and the second motor in the speed reducer assembly device provide power and transmit the power to the differential mechanism assembly device, and finally the differential motion of the wheel hub is achieved.
The application also provides an automobile comprising the double-motor multi-gear parallel shaft drive axle, and the double-motor multi-gear parallel shaft drive axle has the same beneficial effect as the double-motor multi-gear parallel shaft drive axle.
Drawings
FIG. 1 is a schematic structural view of a dual-motor multi-gear parallel shaft drive axle provided by the present invention;
FIG. 2 is a schematic structural diagram of a reducer assembly of a dual-motor multi-gear parallel-shaft drive axle according to the present invention;
FIG. 3 is a schematic structural diagram of a differential assembly device of a dual-motor multi-gear parallel axle drive axle according to the present invention.
In the figure: 1. a reducer assembly device; 2. a differential assembly device; 101. a sun gear; 102. a nut; 103. a third bearing; 104. a fourth bearing; 105. a first gear; 106. a planet wheel; 107. a ring gear; 108. a connecting flange; 109. a first retainer ring; 110. a third gear; 111. a first stator; 112. a first rotor; 113. a first shift fork; 114. a first bearing; 115. a first gasket; 116. a first needle bearing set; 117. fixing a gear sleeve; 118. a first adjustment member; 119. a second bearing; 120. a second stator; 121. a second rotor; 122. a first carrier; 201. a fourth gear; 202. a third needle bearing; 203. a differential right housing; 204; a half-shaft gear spacer; 205. a fifth bearing; 206. a first half-shaft gear; 207. a second side gear; 208. a differential middle shell; 209. a second adjustment member; 210. a second fork; 211. a second gear; 212. a second needle bearing; 213. a differential left housing; 214. a second retainer ring; 215. a planetary gear shaft; 216. a planetary gear; 217. a second planet carrier.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being permanently connected, detachably connected, or integral; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
The double-motor multi-gear parallel shaft drive axle comprises a speed reducer assembly device 1 and a differential assembly device 2, and referring to fig. 1, the speed reducer assembly device 1 comprises a first motor and a second motor, and the first motor and the second motor are arranged in series; the differential assembly device 2 is used for being connected with a hub of an automobile, and the differential assembly device 2 is connected with the output end of the speed reducer assembly device 1;
wherein the first electric machine and the second electric machine are configured for simultaneously powering the retarder assembly 1.
Specifically, the speed reducer assembly device 1 comprises a first motor and a second motor which are connected in series and symmetrically arranged, the first motor and the second motor are both the output end of the speed reducer assembly device 1 to provide power, and the output end of the speed reducer assembly device 1 is connected with the differential assembly device 2.
In the use process, the first motor and the second motor in the speed reducer assembly device 1 provide power together, the power is transmitted to the differential mechanism assembly device 2 through the output end, and finally differential motion of the wheel hub is achieved, the speed reducer assembly device 1 provides power through the first motor and the second motor together, therefore, the power obtained by the whole device can be improved, and meanwhile, the first motor and the second motor are symmetrically arranged, so that the output directions of the first motor and the second motor can be ensured to be consistent.
Referring to fig. 2, in some embodiments, the reducer assembly 1 includes a planetary gear device connected to a first electric machine and a second electric machine, a first adjusting member 118 is connected to an outer portion of a first carrier 122 of the planetary gear device, and the first adjusting member is detachably connected to a sun gear 101 and the first electric machine of the planetary gear device.
Specifically, the planetary gear device includes a sun gear 101, a first planet carrier 122 and a plurality of planetary gears 106, a first rotor 112 of a first motor is connected with one end of the sun gear 101 in a spline manner, a second rotor 121 of a second motor is connected with the other end of the sun gear 101 in a spline manner, the first planet carrier 122 is arranged outside the sun gear 101, a fixed gear sleeve 117 is fixedly arranged at the end of the first stator 111 of the first motor of the sun gear 101, the end of the first stator 111, the fixed gear sleeve 117 and the first planet carrier 122 are parallel in radial height, a first adjusting member 118 is arranged on the periphery of the first planet carrier 122, the first adjusting member 118 is detachably connected with the fixed gear sleeve 117 on the sun gear 101 and the first stator 111 of the first motor, first needle bearing sets 116 are arranged at both ends of the fixed gear sleeve 117, first gaskets 115 are arranged at outer ends of the first needle bearing sets 116 at both ends, the sun gear 101 is connected with the end of the first stator 111 through a first bearing 114, and the sun gear 101 is connected with the end of the second stator 120 through a second bearing 119.
Planet wheel 106 and sun gear 101 external toothing, third bearing 103 and fourth bearing 104 are installed to the position that lies in planet wheel 106 both ends on sun gear 101, nut 102 is all installed to the outer end of third bearing 103 and the outer end of fourth bearing 104, and first planet carrier 122 internal wall face is located the outer end department of third bearing 103 and fourth bearing 104 and is equipped with the ring channel, all is equipped with first retaining ring 109 in the ring channel at both ends to the axial displacement of restriction third bearing 103, fourth bearing 104. The periphery of the planet gear 106 is sleeved with a gear ring 107, two ends of the gear ring 107 are both provided with a connecting flange 108, and the gear ring 107 is connected with the connecting flange 108 through bolts.
When the planetary gear set is in use, when the first adjusting part 118 is respectively connected with the first stator 111 and the first planet carrier 122 and is not connected with the sun gear 101, the planetary gear set is in a speed reduction output state; when the first adjusting member 118 is connected to the first carrier 122 and the fixed gear sleeve 117, that is, connected to the first carrier 122 and the sun gear 101, and disconnected from the first stator 111, the planetary gear device is in a constant-speed output state; when the first adjuster 118 is connected to only the first carrier 122, the planetary gear set is in a neutral state, and there is no power output.
The first adjusting piece 118 arranged on the first planet carrier 122 is detachably connected with the sun gear 101 and the first stator 111, so that the planet gear device has three output states, three gear switching functions of the planet gear device can be realized by adjusting the first adjusting piece 118, and the gear number of the parallel shaft point drive axle is increased.
Since the height of the sun gear 101 itself is low relative to the heights of the first stator 111 and the first carrier 122, increasing the height of the sun gear 101 by the fixed gear sleeve 117 may facilitate the connection of the first adjuster 118 with the sun gear 101, and optionally, the heights of the fixed gear sleeve 117, the first stator 111, and the first carrier 122 may not be uniform.
In some embodiments, the inner periphery of the first adjusting member 118 is provided with first spline holes along both ends in the axial direction thereof, and the first carrier 122, the sun gear 101, and the first motor are provided with first spline shafts;
the first carrier 122, the sun gear 3, and the first spline shaft of the first motor are slidably connected to the first spline hole, so that one or both of the first carrier 122, the sun gear 3, and the first motor are connected to the first adjuster 118.
Specifically, the first adjusting member 118 is a cylindrical sliding gear sleeve, which is sleeved on the periphery of the first carrier 122, the end portion of the first stator 111, the fixed gear sleeve 117 and the first carrier 122 are all provided with a first spline shaft, the two ends of the inner side of the first adjusting member 118 are all provided with a first spline hole, wherein the first spline hole at one end is matched with the first spline shaft of the first carrier 122, and the first adjusting member 118 can slide relative to the first carrier 122, the first stator 111 and the fixed gear sleeve 117.
When the first adjusting member 118 slides to the first spline holes at two ends to be respectively connected with the first spline shaft of the first planet carrier 122 and the first spline shaft of the fixed gear sleeve 117, the planetary gear device is in a constant-speed output state, and the first adjusting member 118 is positioned on the fixed gear sleeve 117 and the first planet carrier 122 and can slide relative to the fixed gear sleeve 117 and the first planet carrier 122; when the first adjusting member 118 slides towards the first stator 111, and the first spline hole at one end of the first adjusting member 118 is connected with the first spline shaft of the first planet carrier 122, and the first spline hole at the other end is not connected, the planet gear device is in a neutral state; when the first adjusting member 118 continues to slide until the first spline holes at the two ends of the first adjusting member 118 are connected with the first spline shaft of the first planet carrier 122 and the first spline shaft of the first stator 111, respectively, the planetary gear set is in a deceleration state.
The first adjusting member 118 is engaged with the first stator 111, the fixed gear sleeve 117 and the first carrier 122 in a spline manner, so that the gear shifting manner is simple, and the occupied space is small, thereby realizing the three-gear switching function of the reducer assembly device 1 under the condition of light overall weight, and reducing the production cost.
Optionally, the first adjusting member 118 may be detachably connected to the fixed gear sleeve 117 and the first stator 111 by a snap or other means.
In some embodiments, the first adjuster 118 is externally provided with a first fork 113, and the first fork 113 is configured to slide the first fork 113.
Specifically, the periphery of the first adjusting part 118 is provided with a first annular groove, a first shifting fork 113 is arranged in the first annular groove, the first shifting fork 113 and the first adjusting part 118 are clamped in the axial direction, the first adjusting part 118 can be driven by the first shifting fork 113 to slide in the axial direction relative to the first planet carrier 122, the fixed gear sleeve 117 and the first stator 111, the operation is simple and convenient, the whole weight is light, and therefore the gear shifting efficiency can be improved, and the production cost can be reduced.
Alternatively, a plurality of first ring grooves may be circumferentially formed on the outer circumference of the first adjusting member 118.
In some embodiments, a first gear 105 is connected to one side of the planetary arrangement; the differential assembly device 2 includes a second gear 211; the first gear 105 and the second gear 211 are each configured as a cylindrical gear; and the first gear 105 is engaged with the second gear 211.
Specifically, the output end of the speed reducer assembly device 1 is a first gear 105, power is transmitted to the differential assembly device 2 through the first gear 105, the first gear 105 is connected to the connecting flange 108 on the left side of the gear ring 107, the differential assembly device 2 comprises a second gear 211, the first gear 105 is meshed with the second gear 211, the first gear 105 and the second gear 211 are both cylindrical gears, power transmission between the speed reducer assembly device 1 and the differential assembly device 2 is achieved through a cylindrical gear pair, and the production cost of the gears can be reduced.
In some embodiments, the planetary gear device is connected with the third gear 110 at one side, the differential assembly device 2 includes a fourth gear 201, the third gear 110 and the fourth gear 201 are both configured as cylindrical gears, and the third gear 110 and the fourth gear 201 are meshed.
Specifically, the other output end of the speed reducer assembly device is a third gear, the connecting flange 108 on the right side of the gear ring 107 is connected with the third gear 110, the differential assembly device 2 comprises a fourth gear 201, the third gear 110 is meshed with the fourth gear 201, the third gear 110 and the fourth gear 201 are cylindrical gears, power transmission between the speed reducer assembly device 1 and the differential assembly device 2 is achieved through a cylindrical gear pair, and the production cost of the gears can be reduced.
Referring to fig. 3, in some embodiments, the gear ratios of the first gear 105 and the second gear 211 and the gear ratios of the third gear 110 and the fourth gear 201 are different, and a second adjusting member 209 is connected to the outside of the differential middle housing 208 of the differential assembly apparatus 2, and the second adjusting member 209 is detachably connected to the second gear 211 and the fourth gear 201, respectively.
Specifically, the differential assembly device 2 includes a differential middle case 208, a differential right case 203, a differential left case 213, planet gears 216, a first half gear 206, and a second half gear 207, wherein the differential middle case 208 is located between the second gear 211 and the fourth gear 201, the four planet gears 216 are respectively installed on four planet gear shafts 215, the convex spherical surfaces of the planet gears 216 are all matched with the concave spherical surface inside the differential middle case 208, the second planet carrier 217 is provided with a second ring gear 214 for limiting the axial displacement of the planet gear shafts 215, the differential left case 213 and the differential right case 203 are respectively installed on two sides of the differential middle case 208, the three are installed inside the differential right case 203 through the first half gear 206 connected by bolts, a half gear gasket 204 is arranged between the three, the second half gear 207 is installed inside the differential left case 213, a half gear gasket 204 is also arranged between the two, the first half gear 206 and the second half gear 207 are both meshed with the planet gears 216, and the end portions of the differential left case 213 and the differential right case 203 are both provided with a fifth bearing 205.
The second gear 211 is sleeved outside the differential left shell 213, a second needle bearing 212 is arranged between the second gear 211 and the differential left shell 213, the fourth gear 201 is sleeved outside the differential right shell 203, a third needle bearing 202 is arranged between the fourth gear and the differential right shell 203, and the second adjusting piece 209 is arranged on the differential middle shell 208.
When the second adjusting member 209 is connected to the differential center housing 208 and the second gear 211, respectively, and is not connected to the fourth gear 201, the reduction ratio between the reduction gear assembly 1 and the differential assembly 2 is the reduction ratio between the first gear 105 and the second gear 211; when the second adjusting member 209 is connected to the differential center case 208 and the fourth gear 201, respectively, and is not connected to the second gear 211, the reduction ratio between the reduction gear assembly 1 and the differential assembly 2 is the reduction ratio between the third gear 110 and the fourth gear 201.
Since the transmission ratios of the two pairs of cylindrical gear pairs of the reducer assembly device 1 and the differential assembly device 2 are different, the reduction ratios of the reducer assembly device 1 and the differential assembly device 2 when the second adjusting member 209 is connected with the second gear 211 are different from the reduction ratios of the reducer assembly device 1 and the differential assembly device 2 when the second adjusting member 209 is connected with the fourth gear 201, so that the switching function of the two-gear reduction ratio of the differential assembly device 2 is realized, and the overall performance is improved.
In some embodiments, the inner periphery of the second adjustment member 209 is provided with a second splined hole, the differential center housing 208, the second gear 211 and the fourth gear 201 are provided with a second splined shaft, and the differential center housing 208, the second gear 211 and the fourth gear 201 are provided with a second splined shaft;
the second splined shaft of the differential center housing 208, the second gear 211 and the fourth gear 201 can be slidably connected to the second splined bore such that one or both of the differential center housing 208, the second gear 211 and the fourth gear 201 are connected to the second adjuster 209.
Specifically, the differential middle shell 208, the second gear 211 and the fourth gear 201 are all provided with second spline shafts, the heights of the second spline shafts of the differential middle shell 208, the second gear 211 and the fourth gear 201 are flush, a second spline hole is formed in the inner side of the second adjusting piece 209, the second spline hole is in fit connection with the second spline shaft of the differential middle shell 208, and the second adjusting piece 209 can slide relative to the differential middle shell 208, the second gear 211 and the fourth gear 201.
When the second adjusting member 209 is slid to the left, the second adjusting member 209 is connected to the differential middle housing 208 and the second gear 211, respectively, and the reduction ratios of the reduction gear assembly 1 and the differential assembly 2 are the reduction ratios of the first gear 105 and the second gear 211; when the second adjusting member 209 slides to the right, the second adjusting member 209 is connected to the differential middle housing 208 and the fourth gear 201, respectively, and the reduction ratio of the reduction gear assembly 1 and the reduction gear assembly 2 is the reduction ratio of the third gear 110 and the fourth gear 201.
Through the connection mode of the second spline shaft and the second spline hole, the second adjusting piece 209 can slide relative to the differential middle shell 208, the second gear 211 and the fourth gear 201, and meanwhile, the connection between the differential middle shell 208 and one of the differential middle shell 208 is realized, so that the gear shifting function of the differential assembly device 2 is realized, the operation is simple and convenient, and the whole weight and the production cost can be reduced.
The heights of the differential middle shell 208, the second gear 211 and the fourth gear 201 are flush, so that the sliding of the second adjusting piece 209 can be facilitated, the gear shifting efficiency can be improved, and the gear shifting effect can be ensured.
In some embodiments, the second adjusting member 209 is externally provided with a second fork 210, and the second fork 113 is configured to slide the second fork 210.
Specifically, the periphery of the second adjusting member 209 is provided with a circle of second annular grooves, the second annular grooves are internally provided with second shifting forks 210, the second adjusting member 209 can be controlled to slide by the second shifting forks 210, the operation is simple and convenient, the gear shifting efficiency of the differential assembly device 2 can be improved, meanwhile, the occupied space is small, and the production cost can be reduced.
Alternatively, a plurality of second ring grooves may be circumferentially formed on the outer circumference of the second adjusting member 209.
The application also provides an automobile comprising the double-motor multi-gear parallel shaft drive axle, and other structures of the automobile are in the prior art and are not described in detail herein.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. The utility model provides a two motor multispeed parallel shaft transaxles which characterized in that, two motor multispeed parallel shaft transaxles include:
the speed reducer assembly device (1) comprises a first motor and a second motor, wherein the first motor and the second motor are arranged in series;
the differential assembly device (2) is used for being connected with a hub of an automobile, and the differential assembly device (2) is connected to the output end of the speed reducer assembly device (1);
wherein the first and second electrical machines are configured for simultaneously powering the retarder assembly (1).
2. The dual-motor multi-gear parallel shaft drive axle according to claim 1, wherein the reducer assembly (1) comprises a planetary gear device connected with the first motor and the second motor, a first adjusting member (118) for adjusting the output state of the planetary gear device is connected to the outside of a first planet carrier (122) of the planetary gear device, and the first adjusting member (118) is detachably connected with a sun gear (3) of the planetary gear device and the first motor.
3. The dual-motor multi-speed parallel shaft drive axle according to claim 2, wherein the inner periphery of the first adjusting member (118) is provided with first spline holes along both ends in the axial direction thereof, and the first carrier (122), the sun gear (3) and the first motor are each provided with a first spline shaft;
the first carrier (122), the sun gear (3) and the first spline shaft of the first electric machine are slidably connected to the first spline hole to connect one or both of the first carrier (122), the sun gear (3) and the first electric machine with the first adjuster (118).
4. The two-motor multi-speed parallel axle transaxle of claim 3 wherein the first adjusting member (118) is externally provided with a first fork (113), the first fork (113) being configured to slide the first adjusting member (118).
5. The dual-motor multi-gear parallel shaft drive axle of claim 2, wherein a first gear (105) is connected to one side of the planetary gear device; the differential assembly device (2) comprises a second gear (211); the first gear (105) and the second gear (211) are each configured as cylindrical gears; and the first gear (105) is meshed with the second gear (211).
6. The dual-motor multi-gear parallel-shaft drive axle according to claim 5, characterized in that a third gear (110) is connected to one side of the planetary gear arrangement, the differential assembly device (2) comprises a fourth gear (201), the third gear (110) and the fourth gear (201) are both configured as cylindrical gears, and the third gear (110) and the fourth gear (201) are meshed.
7. The dual-motor multi-gear parallel shaft drive axle according to claim 6, wherein the gear ratios of the first gear (105) and the second gear (211) and the gear ratios of the third gear (110) and the fourth gear (201) are different, and a second adjusting member (209) is connected to the outside of a differential middle housing (208) of the differential assembly device (2), wherein the second adjusting member (209) is detachably connected to the second gear (211) and the fourth gear (201), respectively.
8. The dual-motor multi-speed parallel axle drive axle according to claim 7, wherein the second adjustment member (209) is provided with a second splined hole on its inner circumference, and the differential center housing (208), the second gear (211) and the fourth gear (201) are provided with a second splined shaft;
the second spline shafts of the differential center housing (208), the second gear (211) and the fourth gear (201) are slidably connected to the second spline holes, so that one or two of the differential center housing (208), the second gear (211) and the fourth gear (201) are connected with the second adjusting piece (209).
9. The dual-motor multi-speed parallel axle transaxle of claim 8 wherein the second adjuster (209) is externally provided with a second fork (210), the second fork (113) being configured to slide the second adjuster (209).
10. An automobile, comprising:
the dual-motor multi-gear parallel shaft transaxle of any one of claims 1-9.
CN202210914987.2A 2022-08-01 2022-08-01 Double-motor multi-gear parallel shaft drive axle and automobile Pending CN115257334A (en)

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB731938A (en) * 1952-06-09 1955-06-15 Ferguson Res Ltd Harry Improvements in or relating to vehicle differential transmissions
CN103438172A (en) * 2013-08-31 2013-12-11 西南大学 Planetary gear train two-gear speed control system
CN209164506U (en) * 2018-06-29 2019-07-26 比亚迪股份有限公司 Speed changer, power drive system and vehicle
US20200158218A1 (en) * 2017-07-31 2020-05-21 Magna powertrain gmbh & co kg Drive device
CN212332298U (en) * 2020-04-29 2021-01-12 广西玉柴机器股份有限公司 Three-stage parallel gear reduction shaft installation electric bridge with two gears
CN112519504A (en) * 2019-09-17 2021-03-19 东风德纳车桥有限公司 Electric drive axle with double motors and double-speed parallel shafts
CN214057204U (en) * 2020-12-31 2021-08-27 东风德纳车桥有限公司 Double-motor electric drive axle and automobile
CN114148152A (en) * 2021-10-18 2022-03-08 东风德纳车桥有限公司 Dual-motor mechanical coupling electric drive bridge and vehicle
CN216975684U (en) * 2021-11-30 2022-07-15 惠州比亚迪电池有限公司 Power transmission system for vehicle and vehicle with power transmission system

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB731938A (en) * 1952-06-09 1955-06-15 Ferguson Res Ltd Harry Improvements in or relating to vehicle differential transmissions
CN103438172A (en) * 2013-08-31 2013-12-11 西南大学 Planetary gear train two-gear speed control system
US20200158218A1 (en) * 2017-07-31 2020-05-21 Magna powertrain gmbh & co kg Drive device
CN209164506U (en) * 2018-06-29 2019-07-26 比亚迪股份有限公司 Speed changer, power drive system and vehicle
CN112519504A (en) * 2019-09-17 2021-03-19 东风德纳车桥有限公司 Electric drive axle with double motors and double-speed parallel shafts
CN212332298U (en) * 2020-04-29 2021-01-12 广西玉柴机器股份有限公司 Three-stage parallel gear reduction shaft installation electric bridge with two gears
CN214057204U (en) * 2020-12-31 2021-08-27 东风德纳车桥有限公司 Double-motor electric drive axle and automobile
CN114148152A (en) * 2021-10-18 2022-03-08 东风德纳车桥有限公司 Dual-motor mechanical coupling electric drive bridge and vehicle
CN216975684U (en) * 2021-11-30 2022-07-15 惠州比亚迪电池有限公司 Power transmission system for vehicle and vehicle with power transmission system

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