CN109677262B - Centralized electrically driven independent suspension rear axle - Google Patents
Centralized electrically driven independent suspension rear axle Download PDFInfo
- Publication number
- CN109677262B CN109677262B CN201910065150.3A CN201910065150A CN109677262B CN 109677262 B CN109677262 B CN 109677262B CN 201910065150 A CN201910065150 A CN 201910065150A CN 109677262 B CN109677262 B CN 109677262B
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- China
- Prior art keywords
- assembly
- swing arm
- pin shaft
- speed reducer
- support frame
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- 239000000725 suspension Substances 0.000 title claims abstract description 17
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 75
- 230000005540 biological transmission Effects 0.000 claims abstract description 14
- 239000006096 absorbing agent Substances 0.000 claims description 10
- 230000035939 shock Effects 0.000 claims description 9
- 229910001141 Ductile iron Inorganic materials 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 230000004089 microcirculation Effects 0.000 abstract description 2
- 230000000712 assembly Effects 0.000 abstract 1
- 238000000429 assembly Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 5
- 238000005265 energy consumption Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009699 differential effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
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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
- 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
- B60K17/12—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of electric gearing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B27/00—Hubs
- B60B27/0047—Hubs characterised by functional integration of other elements
- B60B27/0052—Hubs characterised by functional integration of other elements the element being a brake disc
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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
- B60B35/121—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
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G3/00—Resilient suspensions for a single wheel
- B60G3/18—Resilient suspensions for a single wheel with two or more pivoted arms, e.g. parallelogram
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G7/00—Pivoted suspension arms; Accessories thereof
- B60G7/008—Attaching arms to unsprung part of vehicle
-
- 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
- B60K17/165—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of differential gearing provided between independent half axles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Axle Suspensions And Sidecars For Cycles (AREA)
- Arrangement Of Transmissions (AREA)
Abstract
A centralized electric drive independent suspension rear axle relates to an electric drive rear axle, which comprises a lower swing arm, a hub assembly, a brake assembly, a support frame assembly, an upper swing arm, an air bag assembly, a damper assembly, a frame, a power assembly and a universal joint transmission shaft; the starting ends of the upper swing arm and the lower swing arm are respectively hinged to the upper part and the lower part of the support frame assembly through pin shaft assemblies, and the tail ends of the upper swing arm and the lower swing arm are respectively fastened to the frame; the support frame assembly, the upper swing arm, the lower swing arm and the frame form a parallelogram lever mechanism; the power assembly comprises a motor and a speed reducer assembly which are arranged on the frame and connected together; one end of the universal joint transmission shaft is connected with the speed reducer assembly, and the other end of the universal joint transmission shaft is connected with the support frame assembly. The invention has the characteristics of high operation stability, high bearing capacity, good rotation flexibility, good comfort, light weight and the like, and can meet the performance requirements of urban logistics vehicles and microcirculation buses.
Description
Technical Field
The invention relates to an electrically driven rear axle, in particular to a centralized electrically driven independent suspension rear axle.
Background
The main current driving system adopted by the electric vehicle is that an engine and a gearbox are replaced by a central motor or a traditional rigid bridge is deformed on the basis of the traditional vehicle, and the central motor, a speed reducer and a rigid bridge carrier are integrated together. The rigid electric drive bridge occupies large space, and has relatively low comfort and control stability.
Disclosure of Invention
The invention aims to solve the technical problems that: the utility model provides a centralized electrically driven independent suspension rear axle to improve travelling comfort, the stability of controlling and simplifying overall structure of whole car.
The technical scheme for solving the technical problems is as follows: the centralized electrically driven independent suspension rear axle comprises a hub assembly, a brake assembly, an air bag assembly, a shock absorber assembly, a frame and a power assembly, wherein the hub assembly, the brake assembly, the air bag assembly and the shock absorber assembly are respectively and symmetrically arranged at two sides of the frame, and the centralized electrically driven independent suspension rear axle further comprises a lower swing arm, a support frame assembly, an upper swing arm and a universal joint transmission shaft which are respectively and symmetrically arranged at two sides of the frame; the starting end of the upper swing arm is hinged to the upper part of the support frame assembly through a pin shaft assembly, and the tail end of the upper swing arm is fastened to the frame; the starting end of the lower swing arm is connected to the lower part of the support frame assembly through a pin shaft assembly, and the tail end of the lower swing arm is fastened to the frame; the support frame assembly, the upper swing arm, the lower swing arm and the frame form a parallelogram lever mechanism; the hub assembly, the brake assembly, the air bag assembly and the shock absorber assembly are respectively fixed on the support frame assembly; the power assembly comprises a motor and a speed reducer assembly, the motor and the speed reducer assembly are fixedly connected to form a power assembly module, the speed reducer assembly is connected with the output end of the motor, and the motor and the speed reducer assembly are respectively fixedly arranged on the frame; one end of the universal joint transmission shaft is connected with the speed reducer assembly, and the other end of the universal joint transmission shaft is connected with the support frame assembly.
The invention further adopts the technical scheme that: the speed reducer assembly is a two-stage speed reducing mechanism and comprises a speed reducer shell, an input shaft assembly, a middle shaft assembly, an end cover assembly A, an end cover assembly B, a differential mechanism assembly, a parking brake assembly and an input shaft cover assembly which are respectively arranged on the speed reducer shell; the end cover assembly A and the end cover assembly B are oppositely arranged on the speed reducer shell; the input shaft assembly and the intermediate shaft assembly are meshed with each other, the intermediate shaft assembly is meshed with the differential mechanism assembly, and two ends of the differential mechanism shell assembly are respectively connected with output shafts of the end cover assembly A and the end cover assembly B; the parking brake assembly is assembled and fastened on the input shaft end cover assembly, and the input shaft end cover assembly is arranged between the end part of the input shaft assembly and the speed reducer shell.
The invention further adopts the technical scheme that: the speed reducer shell is a split type shell formed by combining a speed reducer shell I and a speed reducer shell II in opposite directions.
The invention further adopts the technical scheme that: the pin shaft assembly comprises an oil seal seat ring, a pin shaft bearing, a hole retainer ring, a pin shaft oil seal, a slotted nut and a pin shaft, wherein the pin shaft penetrates through a pin shaft hole of the support frame assembly and the starting end of an upper swing arm or a lower swing arm, the oil seal seat ring, the pin shaft bearing, the hole retainer ring and the pin shaft oil seal are respectively sleeved on the pin shaft, the hole retainer ring is arranged in the middle of the pin shaft hole, and the outer diameter of the hole retainer ring is matched with the inner hole wall of the pin shaft hole; the pin shaft bearings are respectively arranged at two ends of the check ring for the hole, the outer diameter of each pin shaft bearing is matched with the inner hole wall of the pin shaft hole, and the inner diameter of each pin shaft bearing is matched with the outer diameter of each pin shaft; the retainer ring for the hole and the pin shaft oil seal are respectively pressed at the outer end of the pin shaft bearing; the slotted nut is locked at the end part of the pin shaft.
The invention further adopts the technical scheme that: the hub assembly is a maintenance-free hub structure and comprises a hub, a brake disc, a gear ring and a unit bearing, wherein the unit bearing is arranged in a middle hole of the hub, and the gear ring is arranged at the end part of the hub and is locked by a fastener; the brake disc is arranged on the hub.
The invention further adopts the technical scheme that: the support frame assembly, the upper swing arm and the lower swing arm are all made of austempered ductile cast iron materials.
Due to the adoption of the structure, compared with the prior art, the centralized electric drive independent suspension rear axle has the following beneficial effects:
1. can improve the control stability of the whole vehicle
The power assembly comprises the motor and the speed reducer assembly, the motor and the speed reducer assembly are fixedly connected to form a power assembly module, the speed reducer assembly is connected with the output end of the motor, and the motor and the speed reducer assembly are respectively fixedly arranged on the frame. Therefore, the motor and the speed reducer assembly are integrated and suspended on the frame, so that the unsprung mass of the vehicle can be effectively reduced, and the steering stability of the whole vehicle is improved.
2. Can improve the bearing capacity and the rotation flexibility
The invention comprises a lower swing arm, a support frame assembly, an upper swing arm and a universal joint transmission shaft which are respectively and symmetrically arranged at two sides of the frame; the starting end of the upper swing arm is hinged to the upper part of the support frame assembly through a pin shaft assembly, and the tail end of the upper swing arm is fastened to the frame; the starting end of the lower swing arm is connected to the lower part of the support frame assembly through a pin shaft assembly, and the tail end of the lower swing arm is fastened to the frame; the support frame assembly, the upper swing arm, the lower swing arm and the frame form a parallel four-side rod mechanism. Therefore, the supporting frame and the upper swing arm are rigidly connected by adopting the pin shaft, and the bearing capacity and the rotation flexibility can be greatly improved through the parallelogram lever mechanism.
3. Can improve the comfort and the capacity of the whole vehicle, realize the light weight of the whole bridge, and has good low energy consumption effect
The suspension adopts a double-cross arm independent suspension structure, so that the comfort of the whole vehicle can be improved, the capacity of the whole vehicle can be improved, the light weight of the whole vehicle can be realized, and the low energy consumption effect is very obvious.
4. Can realize large speed ratio, large torque and stable mechanical differential performance
Because the speed reducer assembly is a two-stage speed reducing mechanism, the speed reducer assembly comprises a speed reducer shell, an input shaft assembly, a middle shaft assembly, an end cover assembly A, an end cover assembly B, a differential mechanism assembly, a parking brake assembly and an input shaft cover assembly which are respectively arranged on the speed reducer shell; the end cover assembly A and the end cover assembly B are oppositely arranged on the speed reducer shell; the input shaft assembly and the intermediate shaft assembly are meshed with each other, the intermediate shaft assembly is meshed with the differential mechanism assembly, and two ends of the differential mechanism shell assembly are respectively connected with output shafts of the end cover assembly A and the end cover assembly B; the parking brake assembly is assembled and fastened on the input shaft end cover assembly, and the input shaft end cover assembly is arranged between the end part of the input shaft assembly and the speed reducer shell. Therefore, the speed reducer assembly adopts a two-stage parallel shaft speed reduction and differential mechanism structure, integrates a parking braking structure and a mechanical differential mechanism, and can realize high speed ratio, high torque and stable mechanical differential performance.
5. Can realize function modularization and simplify the whole structure
The speed reducer assembly integrates the parking braking structure and the mechanical differential structure, so that the function modularization can be realized, and the integral structure is simplified.
6. Maintenance-free mileage can be increased, and service life of hub assembly can be prolonged
The hub assembly is of a maintenance-free hub structure and comprises a hub, a brake disc, a gear ring and a unit bearing, wherein the unit bearing is arranged in a middle hole of the hub, and the gear ring is arranged at the end part of the hub and is locked by a fastener; the brake disc is mounted on the hub. Therefore, the hub bearing adopts the maintenance-free integral unit bearing, can increase maintenance-free mileage and greatly prolongs the service life of the hub assembly.
7. Convenient maintenance, replacement and disassembly
Because the motor and the speed reducer assembly are integrated into a whole and are suspended on the frame, the invention can facilitate maintenance, replacement and disassembly.
8. Light weight and high strength
Because the supporting frame, the upper swing arm and the lower swing arm are all made of austempered ductile cast iron materials, the strength can be improved, the bearing capacity of the whole bridge can be increased, and the weight can be reduced by utilizing high-grade cast iron.
In conclusion, the invention has the characteristics of high operating stability, high bearing capacity, good rotation flexibility, good comfort, good low energy consumption effect, large speed ratio, large torque, simplified integral structure, long service life, convenient maintenance, replacement and disassembly, light weight and the like of the whole vehicle, and meets the performance requirements of urban logistics vehicles and microcirculation buses.
The technical features of the centralized electrically driven independent suspension rear axle of the present invention will be further described with reference to the drawings and examples.
Drawings
Fig. 1: the invention relates to a structural schematic diagram of a centralized electrically driven independent suspension rear axle,
Fig. 2: embodiment one the structure of the speed reducer assembly is schematically shown,
Fig. 3: an embodiment is a schematic diagram of a connection structure between the support frame assembly and the upper swing arm or the lower swing arm,
Fig. 4: embodiment one the hub assembly is a schematic structural view,
In the above figures, the reference numerals are as follows:
1-a lower swing arm, wherein,
2-Hub assembly, 21-hub, 22-brake disc, 23-gear ring, 24-unit bearing, 25-tyre bolt,
A 3-brake assembly, comprising a first brake member,
4-Supporting frame assembly, 41-pin shaft assembly, 411-oil seal seat ring, 412-pin shaft bearing, 413-check ring for hole,
414-Pin shaft oil seal, 415-slotted nut, 416-pin shaft,
5-Upper swing arm, 6-air bag assembly, 7-shock absorber assembly, 8-frame,
9-Powertrain, 91-motor, 92-decelerator assembly, 921-decelerator housing, 9211-decelerator housing I,
9212-Speed reducer housing ii, 922-input shaft assembly, 923-intermediate shaft assembly, 924-end cap assembly a, 925-end cap assembly B, 926-differential assembly, 927-parking brake assembly, 928-input shaft cap assembly,
10-Universal joint transmission shaft.
Detailed Description
The utility model provides a centralized electric drive independent suspension rear axle, includes lower swing arm 1, wheel hub assembly 2, stopper assembly 3, support frame assembly 4, upper swing arm 5, gasbag assembly 6, shock absorber assembly 7, frame 8, power assembly 9, universal joint transmission shaft 10, lower swing arm 1, wheel hub assembly 2, stopper assembly 3, support frame assembly 4, upper swing arm 5, gasbag assembly 6, shock absorber assembly 7 respectively symmetry install in the both sides of frame 8; wherein:
The support frame assembly 4 is used as a whole bridge support main body, the initial end of the upper swing arm 5 is hinged to the upper part of the support frame assembly 4 through a pin shaft assembly 41, the tail end of the upper swing arm 5 is fastened to the frame 8, and the support frame assembly 4 can flexibly rotate around the tail end of the upper swing arm 5; the starting end of the lower swing arm 1 is connected to the lower part of the support frame assembly 4 through a pin shaft assembly 41, the tail end of the lower swing arm 1 is fastened to the frame 8, and the support frame assembly 4 can flexibly rotate around the tail end of the lower swing arm 1; the support frame assembly 4, the upper swing arm 5, the lower swing arm 1 and the frame 8 form a parallel four-side rod mechanism, so that the support frame assembly 4 jumps up and down in the vertical direction, and other directions are limited; the hub assembly 2 is sleeved on the support frame assembly 4 through an adjusting lock nut; the brake assembly 3, the air bag assembly 6 and the shock absorber assembly 7 are fastened on the support frame assembly 4 through bolts.
The power assembly 9 comprises a motor 91 and a speed reducer assembly 92, the motor 91 and the speed reducer assembly 92 are connected through bolts to form a power assembly module, the speed reducer assembly 92 is connected with the output end of the motor 91, and the motor 91 and the speed reducer assembly 92 are respectively fastened on the frame 8 to form a sprung mass; one end of the universal joint transmission shaft 10 is connected with the speed reducer assembly 92, and the other end of the universal joint transmission shaft 10 is connected with the support frame assembly 4.
The speed reducer assembly 92 is a two-stage speed reducer mechanism, and the speed reducer assembly 92 comprises a speed reducer shell 921, an input shaft assembly 922, a middle shaft assembly 923, an end cover assembly A924, an end cover assembly B925, a differential mechanism assembly 926, a parking brake assembly 927 and an input shaft cover assembly 928 which are respectively arranged on the speed reducer shell 921; the speed reducer shell 921 is a split type shell formed by oppositely combining a speed reducer shell I9211 and a speed reducer shell II 9212; the end cover assembly A924 and the end cover assembly B925 are oppositely arranged on the speed reducer shell I9211 and the speed reducer shell II 9212; the input shaft assembly 922 and the intermediate shaft assembly 923 are meshed with each other, the intermediate shaft assembly 923 is meshed with the differential mechanism assembly 926, and two ends of the differential mechanism assembly 926 are respectively connected with output shafts of the end cover assembly A924 and the end cover assembly B925; the park brake assembly 927 is assembled and secured to the input shaft cover assembly 928, and the input shaft cover assembly 928 is mounted between the end of the input shaft assembly 922 and the reducer housing ii 9212.
When the speed reducer assembly 92 is assembled, the speed reducer housing I9211 is taken as an assembly main body, the input shaft assembly 922 is pressed into a corresponding bearing position, then the intermediate shaft assembly 923 is placed at the bearing position, and the input shaft assembly 922 and the intermediate shaft assembly 923 are flexibly meshed and rotated without clamping stagnation; fastening the end cover assembly A924 on the reducer housing I9211 by using a hexagon head bolt, aligning the differential mechanism assembly 926 with an output shaft spline of the end cover assembly A924, smoothly spline-fitting, rotating the reducer assembly, and flexibly rotating without clamping stagnation; tightly sealing the speed reducer shell II 9212 and the speed reducer shell I9211, fastening and connecting the speed reducer shell II 9212 and the speed reducer shell I9211 by using a hexagon head bolt, sleeving the end cover assembly B925 on the Ji Chasu device assembly 926 in a spline fit manner, and fastening the end cover assembly B925 on the speed reducer shell II 9212 by using the hexagon head bolt; after bearing end covers are subjected to bearing play adjustment, the bearing end covers are fastened to a reducer shell II 9212 through hexagon head bolts; the input shaft end cover assembly 928 is fastened on the speed reducer shell II 9212 through a hexagon head bolt, the input shaft assembly 922 is rotated, the input shaft assembly 922, the intermediate shaft assembly 923 and the differential mechanism assembly 926 are linked, the output shaft of the end cover assembly A924 is fixed, the input shaft assembly 922 is rotated, and the output shaft of the end cover assembly B925 at the other end can still rotate to form a differential action; the parking brake assembly 927 is assembled and fastened on the input shaft cover assembly 928, the parking brake assembly 927 is held by hand after the input shaft assembly 922 is rotated, a braking effect is achieved, and finally an oil seal is pressed into the reducer housing I9211.
The pin shaft assembly 41 comprises an oil seal seat ring 411, a pin shaft bearing 412, a hole retainer ring 413, a pin shaft oil seal 414, a slotted nut 415 and a pin shaft 416, wherein the pin shaft 416 penetrates through a pin shaft hole of the support frame assembly 4 and the starting end of the upper swing arm 5 or the lower swing arm 1, the oil seal seat ring 411, the pin shaft bearing 412, the hole retainer ring 413 and the pin shaft oil seal 414 are respectively sleeved on the pin shaft 416, the hole retainer ring 413 is arranged in the middle of the pin shaft hole, and the outer diameter of the hole retainer ring 413 is matched with the inner hole wall of the pin shaft hole; the pin shaft bearings 412 are respectively arranged at two ends of the hole check ring 413, the outer diameter of each pin shaft bearing 412 is matched with the inner hole wall of the pin shaft hole, and the inner diameter of each pin shaft bearing 412 is matched with the outer diameter of each pin shaft 416; the hole retainer ring 413 and the pin shaft oil seal 414 are respectively pressed at the outer end of the pin shaft bearing 412; the slotted nut 415 is locked to the end of the pin 416. During assembly, the hole retainer 413 is firstly arranged in the support frame assembly, then the pin shaft bearings 412 are pressed into the two ends of the hole retainer 413, the oil seal seat rings 411 and the pin shaft oil seals 414 are respectively pressed into the two ends of the hole retainer, the upper swing arm 1 and the lower swing arm 5 are aligned with the pin shaft holes of the support frame assembly 4, and then the hole retainer penetrates through the pin shaft 416 from one end of the hole retainer and is fastened and locked by the slotted nuts 415; the upper swing arm and the lower swing arm are rotated, so that the rotation is flexible and no clamping stagnation exists.
The hub assembly 2 is of a maintenance-free hub structure and comprises a hub 21, a brake disc 22, a gear ring 23 and a unit bearing 24, wherein the unit bearing 24 is arranged in a middle hole of the hub 21, and the gear ring 23 is arranged at the end part of the hub 21 and is locked by a fastener; the brake disc 22 is mounted on the hub. The threads of the tire bolts 25 mounted on the hub 21 distinguish the left and right directions, and thus an anti-loosening effect can be achieved. During assembly, the tire bolts 25 are pressed into the hub 21, then the unit bearings 24 are pressed into the hub 21, the unthreaded holes of the brake disc 22 are aligned with the holes of the hub 21, and then the inner hexagon screws are used for fastening the brake disc and the hub; after the gear ring 23 is correspondingly threaded with the Ji Lungu holes, the gear ring is connected with the hub by fastening screws. The play of the unit bearing 24 under the optimal working condition is adjusted by a 'three-in and three-out' locking nut mode.
The support frame assembly 4 is made of an austempered ductile iron material QTD 1050-12; the upper swing arm 5 and the lower swing arm 1 are both made of austempered ductile iron materials QTD 900-8.
Claims (4)
1. The utility model provides a centralized electric drive independent suspension rear axle, includes wheel hub assembly (2), stopper assembly (3), gasbag assembly (6), shock absorber assembly (7), frame (8), power assembly (9), wheel hub assembly (2), stopper assembly (3), gasbag assembly (6), shock absorber assembly (7) symmetry respectively install in the both sides of frame (8), its characterized in that: the device also comprises a lower swing arm (1), a support frame assembly (4), an upper swing arm (5) and a universal joint transmission shaft (10) which are symmetrically arranged at two sides of the frame (8) respectively; the starting end of the upper swing arm (5) is hinged to the upper part of the support frame assembly (4) through a pin shaft assembly (41), and the tail end of the upper swing arm (5) is fastened to the frame (8); the starting end of the lower swing arm (1) is connected to the lower part of the support frame assembly (4) through a pin shaft assembly (41), and the tail end of the lower swing arm (1) is fastened to the frame (8); the support frame assembly (4), the upper swing arm (5), the lower swing arm (1) and the frame (8) form a parallelogram lever mechanism; the wheel hub assembly (2), the brake assembly (3), the air bag assembly (6) and the shock absorber assembly (7) are respectively fixed on the support frame assembly (4); the power assembly (9) comprises a motor (91) and a speed reducer assembly (92), the motor (91) and the speed reducer assembly (92) are fixedly connected to form a power assembly module, the speed reducer assembly (92) is connected with the output end of the motor (91), and the motor (91) and the speed reducer assembly (92) are respectively fixedly connected to the frame (8); one end of the universal joint transmission shaft (10) is connected with the speed reducer assembly (92), and the other end of the universal joint transmission shaft (10) is connected with the support frame assembly (4); the speed reducer assembly (92) is a two-stage speed reducer mechanism, and the speed reducer assembly (92) comprises a speed reducer shell (921), an input shaft assembly (922), a middle shaft assembly (923), an end cover assembly A (924), an end cover assembly B (925), a differential mechanism assembly (926), a parking brake assembly (927) and an input shaft cover assembly (928) which are respectively arranged on the speed reducer shell (921); the end cover assembly A (924) and the end cover assembly B (925) are oppositely arranged on the reducer shell (921); the input shaft assembly (922) and the intermediate shaft assembly (923) are meshed with each other, the intermediate shaft assembly (923) is meshed with the differential mechanism assembly (926), and two ends of the differential mechanism assembly (926) are respectively connected with output shafts of the end cover assembly A (924) and the end cover assembly B (925); the parking brake assembly (927) is assembled and fastened on the input shaft cover assembly (928), and the input shaft cover assembly (928) is arranged between the end part of the input shaft assembly (922) and the speed reducer shell (921); the pin shaft assembly (41) comprises an oil seal seat ring (411), a pin shaft bearing (412), a hole check ring (413), a pin shaft oil seal (414), a slotted nut (415) and a pin shaft (416), wherein the pin shaft (416) penetrates through a pin shaft hole of the support frame assembly (4) and the starting end of the upper swing arm (5) or the lower swing arm (1), the oil seal seat ring (411), the pin shaft bearing (412), the hole check ring (413) and the pin shaft oil seal (414) are respectively sleeved on the pin shaft (416), the hole check ring (413) is arranged in the middle of the pin shaft hole, and the outer diameter of the hole check ring (413) is matched with the inner hole wall of the pin shaft hole; the pin shaft bearings (412) are respectively arranged at two ends of the hole check ring (413), the outer diameter of each pin shaft bearing (412) is matched with the inner hole wall of the pin shaft hole, and the inner diameter of each pin shaft bearing (412) is matched with the outer diameter of each pin shaft (416); the hole retainer ring (413) and the pin shaft oil seal (414) are respectively pressed at the outer end of the pin shaft bearing (412); the slotted nut (415) is locked at the end of the pin shaft (416).
2. The centralized electrically driven independent suspension rear axle of claim 1, wherein: the speed reducer shell (921) is a split type shell formed by combining a speed reducer shell I (9211) and a speed reducer shell II (9212) in opposite directions.
3. The centralized electrically driven independent suspension rear axle of claim 1, wherein: the hub assembly (2) is of a maintenance-free hub structure and comprises a hub (21), a brake disc (22), a gear ring (23) and a unit bearing (24), wherein the unit bearing (24) is arranged in a middle hole of the hub (21), and the gear ring (23) is arranged at the end part of the hub (21) and is locked by a fastener; the brake disc (22) is mounted on the hub.
4. A rear axle of a centralized electrically driven independent suspension as claimed in any one of claims 1 to 3, wherein: the support frame assembly (4), the upper swing arm (5) and the lower swing arm (1) are all made of austempered ductile iron materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910065150.3A CN109677262B (en) | 2019-01-23 | 2019-01-23 | Centralized electrically driven independent suspension rear axle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910065150.3A CN109677262B (en) | 2019-01-23 | 2019-01-23 | Centralized electrically driven independent suspension rear axle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109677262A CN109677262A (en) | 2019-04-26 |
| CN109677262B true CN109677262B (en) | 2024-06-11 |
Family
ID=66194425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910065150.3A Active CN109677262B (en) | 2019-01-23 | 2019-01-23 | Centralized electrically driven independent suspension rear axle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109677262B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113353176A (en) * | 2021-07-19 | 2021-09-07 | 上汽通用五菱汽车股份有限公司 | Double-cross-arm independent suspension device of rear-drive electric vehicle |
| CN113787871A (en) * | 2021-09-18 | 2021-12-14 | 方盛车桥（柳州）有限公司 | Microcirculation car drive rear axle and compound suspension structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109677262A (en) | 2019-04-26 |
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