CN109808772A - A kind of electric car fore sub frame and front suspension apparatus - Google Patents
A kind of electric car fore sub frame and front suspension apparatus Download PDFInfo
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- CN109808772A CN109808772A CN201910188429.0A CN201910188429A CN109808772A CN 109808772 A CN109808772 A CN 109808772A CN 201910188429 A CN201910188429 A CN 201910188429A CN 109808772 A CN109808772 A CN 109808772A
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Abstract
The invention discloses a kind of electric car fore sub frame and front suspension apparatus, including girder assembly and the cant beam assembly that girder assembly front end is arranged in, the motor that the girder assembly constitutes the inverted U-shaped structure in opening facing tailstock direction reserves installation space A, is equipped with motor in the front end of inverted U-shaped structure and reserves mounting bracket and turning machine mounting base；The cant beam assembly is arranged in girder assembly front end two sides, it is the positive U-shaped structure relative to inverted U-shaped structure, it is successively arranged stabilizer bar assembly and front tube beam between positive U-shaped structure, and is equipped with anti-collision box, the configuration of the present invention is simple at positive U-shaped structure front opening, structure is compact to design, be conducive to space layout, light-weight, crashworthiness is high, strength and stiffness are high, have good practicability and generalization.
Description
Technical field
The present invention relates to a kind of electric car fore sub frame and front suspension apparatus, belong to field of automobile.
Background technique
Subframe can regard the skeleton of tandem axle as, be the component part of tandem axle.Subframe is not complete
Vehicle frame only supports the bracket of tandem axle, suspension, so that vehicle bridge, suspension is connected again with " positive vehicle frame " by it, habit is known as
" subframe ".Conventional without the monocoque body of subframe, suspension is directly to be connected with chassis runner, therefore tandem axle
Suspension guide mechanism components be all loose mail, not assembly, is unfavorable for the assembling of suspension, and suspension is connected directly with vehicle body,
The power of suspension fork mechanism directly acts on vehicle body, causes the comfort of vehicle poor.As other any complex technologies, subframe
Earliest it is also to be equipped with from the standard of D grades of luxurious cars, develops the equipment that can also find on A grades of home vehicles by now, in subframe birth
After life, it can not only obstruct vibration and improve the comfort of vehicle, but also suspension technology utilization rate can be improved, suspension can be first
It is assembled on subframe, constitutes an axle assembly, complicated suspension becomes assembly, same suspension assembly by loose mail
It may be mounted on different vehicle bodies.Suspension design has not needed to develop matched suspension for vehicle body, but can
Directly to load onto assembly, only slightly adjustment is needed to can be achieved with matched well, the vehicle bridge of this assembly form can be good at reducing
Cost, and be also very beneficial for chassis hardware and software platform.
Currently, traditional structure of front auxiliary frame form can be divided into three categories substantially: 1) butterfly beam type subframe；2) frame pair
Vehicle frame；3) full frame subframe；The car of the higher engine forerunner arrangement of traditional fuel vehicle, especially performance, is adopted mostly
It is since full frame subframe has excellent collision performance, and it is preferably rigid to provide vehicle body with full frame fore sub frame
Degree.But simultaneously because fuel oil car engine overall dimensions are larger, full frame subframe is evacuation engine, and consideration and vehicle body
The connection relationship of stringer, it is larger on full frame subframe overall dimensions, occupy arrangement space, and heavier-weight.And new energy vapour
Vehicle is due to motor overall dimensions and is significantly less weight than engine, arranges according to full frame subframe, wastes arrangement space, no
Conducive to space layout, and cost of idleness.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of this electric car fore sub frame and front suspension apparatus, structure are tight
It gathers, reserves motor arrangement space, and there is good collision performance, effectively improve body stiffness, the prior art can be overcome
It is insufficient.
In order to solve the above technical problems, the present invention is achieved by the following technical solutions: secondary vehicle before a kind of electric car
Frame, it is connected firmly on preceding lower body stringer, it includes girder assembly and the cant beam assembly that girder assembly front end is arranged in, the master
The motor that beam assembly constitutes the inverted U-shaped structure in opening facing tailstock direction reserves installation space A, sets in the front end of inverted U-shaped structure
There is motor to reserve mounting bracket and turning machine mounting base；The cant beam assembly is arranged in girder assembly front end two sides, is opposite
In the positive U-shaped structure of inverted U-shaped structure, stabilizer bar assembly and front tube beam are successively arranged between positive U-shaped structure, and just
Anti-collision box is equipped at U-shaped structure front opening.
Aforementioned girder assembly includes the symmetrically arranged U-shaped beam in a left side and right U-shaped beam, on left U-shaped beam and right U-shaped beam equipped with
Lower swing arm mounting hole after the corresponding first mounting hole group of chassis runner and suspension；The cant beam assembly includes symmetrically arranged left front
Cant beam is welded on the front end two sides of the U-shaped beam in a left side and right U-shaped beam before cant beam before cant beam and the right side, the left front cant beam and the right side, and
And the second mounting hole group corresponding with chassis runner is equipped on cant beam before left front cant beam and the right side.
Cant beam is connected firmly with the U-shaped beam in a corresponding left side and right U-shaped beam welding before aforementioned left front cant beam and the right side, connects firmly position in welding
Equipped with auxiliary stand assembly and the transition bracket assembly being arranged on auxiliary stand assembly.
Aforementioned auxiliary stand assembly includes symmetrically arranged left redundant bracket and right redundant bracket, is respectively welded and connects firmly
Cant beam and right U-shaped beam junction before left front cant beam and left U-shaped beam junction, the right side；And in left redundant bracket and right redundant bracket
Equipped with lower swing arm mounting hole before suspension.
Foregoing transition bracket assembly includes symmetrically arranged left transition bracket and right transition bracket, and the two respectively includes corresponding to
Left transition plates and right transition plates, the left transition plates and right transition plates one end are weldingly fixed on left redundant bracket and right redundant branch
On frame, the other end is fixed with left bent plate and right curved plate by bolt；And it is offered on left bent plate and right curved plate vertical with vehicle body
The corresponding auxiliary mounting hole group of beam.
Aforementioned lateral stabiliser bar assembly includes the mounting bracket connected firmly on cant beam assembly lower surface, is set in mounting bracket
There is stabilizer bar.
Aforementioned front tube beam both ends are welded on the arc-shaped transition section of the positive U-shaped structure of cant beam assembly；It is additionally provided between
Cant beam assembly upper surface is arranged in diverter mounting bracket assembly, the diverter mounting bracket assembly comprising symmetrically arranged
Left steering device mounting bracket and right turn device mounting bracket, described left steering device mounting bracket one end are connect with left front cant beam, separately
One end is connect with front tube beam left end；Described right turn device mounting bracket one end is connect with cant beam before the right side, and the other end and front tube beam are right
End connection；And mounting hole is offered in left steering device mounting bracket and right turn device mounting bracket.
Aforementioned anti-collision box includes symmetrically arranged left anti-collision box and right anti-collision box, and left anti-collision box and right anti-collision box pass through respectively
Cant beam is rigidly connected before bolt and left front cant beam and the right side.
Aforementioned anti-collision box is that alumiaum article profile extrusion forms.
A kind of electric car front suspension apparatus comprising electric car fore sub frame, on electric car fore sub frame
Lower swing arm lower swing arm and suspension before is separately installed with after suspension after suspension before lower swing arm mounting hole and suspension at lower swing arm mounting hole；
Turning machine is installed at turning machine mounting base and mounting hole.
Compared with the prior art, the invention discloses a kind of electric car fore sub frame, the fore sub frame includes girder
Assembly and the cant beam assembly that girder assembly front end is arranged in, the girder assembly constitute the inverted U knot in opening facing tailstock direction
The motor of structure reserves installation space A, is equipped with motor in the front end of inverted U-shaped structure and reserves mounting bracket and turning machine mounting base；Institute
The setting of cant beam assembly is stated in girder assembly front end two sides, for the positive U-shaped structure relative to inverted U-shaped structure, positive U-shaped structure it
Between be successively arranged stabilizer bar assembly and front tube beam, and at positive U-shaped structure front opening be equipped with anti-collision box；The present invention is also
Disclose a kind of front suspension apparatus, the front suspension apparatus includes electric car fore sub frame and the pendulum that is mounted on fore sub frame
Arm, turning machine, equipped with lower swing arm mounting hole before lower swing arm mounting hole, suspension after suspension and by turning on electric car fore sub frame
Mounting hole in machine mounting base and diverter mounting bracket assembly constitutes turning machine mounting hole group, and lower swing arm is installed after suspension
Lower swing arm lower swing arm and suspension before is separately installed with after suspension before hole, suspension at lower swing arm mounting hole；Turning machine is mounted on described
At turning machine mounting hole group.
The configuration of the present invention is simple has good practicability and generalization, specifically has the advantage that
(1) structure is compact to design, is conducive to space layout, light-weight, mitigates complete vehicle weight；
(2) increase aluminum anti-collision box, promote complete automobile collision performance, the collision safeties such as protection front steering machine, front motor, and anti-collision box
It is detachably installed using bolt, easy disassembly replacement；
(3) precursor motor arrangement space is reserved, hardware and software platform design is advantageously implemented；
(4) subframe installation uses multiple spot mounting means, increases installation strength, and subframe strength and stiffness are high, effectively improve
Body stiffness；
(5) it is arranged with the common turning machine postposition of tradition, fore sub frame of the present invention is suitable for the preposition arrangement installation of turning machine, rationally benefit
It is practical with arrangement space.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of fore sub frame of the present invention.
Fig. 2 is the positive structure schematic of front suspension apparatus of the present invention.
Fig. 3 is the structure schematic diagram of front suspension apparatus of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description:
As shown in Fig. 1 ~ Fig. 3, a kind of electric car fore sub frame, it includes girder assembly 1 and girder assembly front end is arranged in
Cant beam assembly 2, the girder assembly 1 includes the U-shaped beam 101 in a symmetrically arranged left side and right U-shaped beam 102, in left U-shaped beam 101 and right U
Type beam 102 is equipped with lower swing arm mounting hole 1.3 after the first mounting hole group 1.1 corresponding with chassis runner and suspension；The left side is U-shaped
The motor that beam 101 and right U-shaped beam 102 constitute inverted U-shaped structure reserves installation space A；The cant beam assembly 2 includes symmetrically arranged
Cant beam 202 before left front cant beam 201 and the right side is equipped with corresponding with chassis runner second on cant beam 202 before left front cant beam 201 and the right side
Mounting hole group 1.2；Before cant beam 202 is mounted on the U-shaped beam 101 in the left side and right U-shaped beam 102 before the left front cant beam 201 and the right side
Two sides are held, and cant beam 202 constitutes positive U-shaped structure before the left front cant beam 201 and the right side, is successively arranged between positive U-shaped structure
Stabilizer bar assembly 7 and front tube beam 3, the lower surface of cant beam assembly 2 is arranged in the stabilizer bar assembly 7, front tube beam 3 is set
It sets in the upper surface of cant beam assembly 2, the stabilizer bar assembly 7 includes the mounting bracket 701 being welded on cant beam assembly 2,
The welding installation stud of stabilizer bar 702 is equipped in mounting bracket 701；3 both ends of front tube beam are welded on positive U-shaped structure
Arc-shaped transition section enhances the coupling stiffness of cant beam 202 before left front cant beam 201 and the right side.
The motor that the U-shaped beam 101 in a left side and right U-shaped beam 102 constitute inverted U-shaped structure reserves installation space A, in left U-shaped beam
101 and the junction of right U-shaped beam 102 be equipped with motor and reserve mounting bracket 4 and turning machine mounting base 1.6, the reserved peace of the motor
Dress bracket 4 is welded on U-shaped beam, and the installation for being used for motor is fixed, and can reinforce left U-shaped beam 101 and right U-shaped beam 102
Coupling stiffness；Installation of the turning machine mounting base 1.6 for turning machine is fixed.
Cant beam 202 is connected firmly with the U-shaped beam 101 in a corresponding left side and the right U-shaped welding of beam 102 before the left front cant beam 201 and the right side,
The transition bracket assembly 6 that connecting portion is equipped with auxiliary stand assembly 5 and is arranged on auxiliary stand assembly 5, the auxiliary stand
Assembly 5 includes symmetrically arranged left redundant bracket 501 and right redundant bracket 502, be respectively welded be fixed on left front cant beam 201 with
Cant beam 202 and right U-shaped 102 junction of beam, enhance its coupling stiffness before left U-shaped beam 101, the right side；In left redundant bracket 501 and inside right forward
502 lower surface of bracket is helped to be equipped with lower swing arm mounting hole 1.4 before suspension；The transition bracket assembly 6 includes symmetrically arranged left mistake
Bracket 601 and right transition bracket 602 are crossed, the two, which is respectively welded, to be connected firmly in corresponding left redundant bracket 501 and right redundant bracket 502
On, the left transition bracket 601 and right transition bracket 602 respectively include corresponding left transition plates 6011 and right transition plates 6021,
Lightening hole is offered in the middle part of the left transition plates 6011 and right transition plates 6021, the two one end is weldingly fixed on left redundant bracket
501 and right redundant bracket 502 on, the other end connects firmly left bent plate 6012 and right curved plate 6022 by bolt, in left 6012 He of bent plate
Auxiliary mounting hole group 1.5 corresponding with chassis runner is offered on right curved plate 6022.
Diverter mounting bracket assembly 8, the diverter installation are additionally provided between the cant beam assembly 2 and front tube beam 3
2 upper surface of cant beam assembly is arranged in bracket assembly 8 comprising left steering device mounting bracket 801 and right turn device mounting bracket 802,
3 both ends of front tube beam are respectively set in it, and specifically, described 801 one end of left steering device mounting bracket is connect with left front cant beam 201, separately
One end is connect with 3 left end of front tube beam；Described 802 one end of right turn device mounting bracket is connect with cant beam 202 before the right side, and the other end is with before
3 right end of pipe beam connection, to enhance the coupling stiffness of cant beam assembly 2 and front tube beam 3；And in 801 He of left steering device mounting bracket
Right turn device mounting bracket 802 offers mounting hole 1.7.
Cant beam 4 is symmetrically arranged at the front end with anti-collision box 9 before the left front cant beam 3 and the right side, and the anti-collision box 9 is alumiaum article type
Material is extruded from, light-weight, and promotes complete automobile collision performance, while protecting the important spare parts such as preposition arrangement turning machine, motor
It is not damaged by collision impact, the loss of vehicle caused by reducing collisions；The anti-collision box 9 includes symmetrically arranged left anti-collision box
901 and right anti-collision box 902, left anti-collision box 901 and right anti-collision box 902 respectively by bolt and left front cant beam 3 and it is right before cant beam 4 just
Property connection, disassembling, assembling and replacing is convenient.
When installation, lower swing arm 11 before lower swing arm 10 after suspension and suspension is passed through into lower swing arm mounting hole 1.3, suspension after suspension
Preceding lower swing arm mounting hole 1.4 is mounted on girder assembly 1；In the turning machine mounting base 1.6 and diverter mounting bracket assembly 8
Mounting hole 1.7 constitute turning machine mounting hole group, be used to that turning machine to be installed, make turning machine pass through 1.6 He of turning machine mounting base
Mounting hole 1.7 is mounted on girder assembly 1 and diverter mounting bracket assembly 8；Meanwhile according to the needs of use, reserved in motor
Mountable motor at installation space A constitutes electric car front suspension apparatus, then passes through the first mounting hole group 1.1, the second mounting hole
Group 1.2 and auxiliary mounting hole group 1.5 attach together the electric car front suspension apparatus with vehicle body, compact in integral arrangement, are promoted
General assembly efficiency, and be conducive to suspension platformization design.
Claims (10)
1. a kind of electric car fore sub frame, it is connected firmly on preceding lower body stringer, it is characterised in that: it includes girder assembly
(1) and the cant beam assembly (2) of girder assembly front end is set, the girder assembly (1) constitutes the U that falls in opening facing tailstock direction
The motor of type structure reserves installation space A, is equipped with motor in the front end of inverted U-shaped structure and reserves mounting bracket (4) and turning machine peace
It fills seat (1.6)；Cant beam assembly (2) setting is in girder assembly (1) front end two sides, for relative to the just U-shaped of inverted U-shaped structure
Structure is successively arranged stabilizer bar assembly (7) and front tube beam (3) between positive U-shaped structure, and in positive U-shaped structure front end
Opening is equipped with anti-collision box (9).
2. electric car fore sub frame according to claim 1, it is characterised in that: the girder assembly (1) includes symmetrical
The U-shaped beam (101) in a left side of setting and right U-shaped beam (102), are equipped with and chassis runner on the U-shaped beam (102) of left U-shaped beam (101) and the right side
Lower swing arm mounting hole (1.3) after corresponding first mounting hole group (1.1) and suspension；The cant beam assembly (2) includes being symmetrical arranged
Left front cant beam (201) He Youqian cant beam (202), left front cant beam (201) the He Youqian cant beam (202) is welded on the left U
The front end two sides of type beam (101) and right U-shaped beam (102), and be equipped on left front cant beam (201) He Youqian cant beam (202) with
The corresponding second mounting hole group (1.2) of chassis runner.
3. electric car fore sub frame according to claim 2, it is characterised in that: left front cant beam (201) He Youqian
Cant beam (202) is connected firmly with the corresponding U-shaped beam in a left side (101) and right U-shaped beam (102) welding, is connected firmly position in welding and is equipped with auxiliary branch
Frame assembly (5) and the transition bracket assembly (6) being arranged on auxiliary stand assembly (5).
4. electric car fore sub frame according to claim 3, it is characterised in that: the auxiliary stand assembly (5) includes
Symmetrically arranged left redundant bracket (501) and right redundant bracket (502), are respectively welded and connect firmly in left front cant beam (201) and left U
Cant beam (202) and right U-shaped beam (102) junction before type beam (101) junction, the right side；And in left redundant bracket (501) and inside right forward
Bracket (502) are helped to be equipped with lower swing arm mounting hole (1.4) before suspension.
5. electric car fore sub frame according to claim 3, it is characterised in that: the transition bracket assembly (6) includes
Symmetrically arranged left transition bracket (601) and right transition bracket (602), the two respectively include corresponding left transition plates (6011) and
Right transition plates (6021), the left transition plates (6011) and right transition plates (6021) one end are weldingly fixed on left redundant bracket
(501) and on right redundant bracket (502), the other end is fixed with left bent plate (6012) and right curved plate (6022) by bolt；And
Auxiliary mounting hole group (1.5) corresponding with chassis runner is offered on left bent plate (6012) and right curved plate (6022).
6. electric car fore sub frame according to claim 1, it is characterised in that: stabilizer bar assembly (7) packet
The mounting bracket (701) connected firmly on cant beam assembly (2) lower surface is included, stabilizer bar is equipped on mounting bracket (701)
(702).
7. electric car fore sub frame according to claim 1, it is characterised in that: front tube beam (3) both ends are welded on
The arc-shaped transition section of the positive U-shaped structure of cant beam assembly (2)；It is additionally provided between diverter mounting bracket assembly (8), it is described
Cant beam assembly (2) upper surface is arranged in diverter mounting bracket assembly (8) comprising symmetrically arranged left steering device mounting bracket
(801) connect with right turn device mounting bracket (802), the left steering device mounting bracket (801) one end and left front cant beam (201)
It connects, the other end is connect with front tube beam (3) left end；Cant beam (202) connects before the right turn device mounting bracket (802) one end and the right side
It connects, the other end is connect with front tube beam (3) right end；And in left steering device mounting bracket (801) and right turn device mounting bracket
(802) mounting hole (1.7) are offered on.
8. electric car fore sub frame according to claim 1, it is characterised in that: the anti-collision box (9) includes symmetrically setting
The left anti-collision box (901) and right anti-collision box (902) set, left anti-collision box (901) and right anti-collision box (902) pass through bolt and a left side respectively
Preceding cant beam (3) He Youqian cant beam (4) rigid connection.
9. electric car fore sub frame according to claim 8, it is characterised in that: the anti-collision box (9) is alumiaum article type
Material is extruded from.
10. one kind is based on electric car front suspension apparatus described in claim 1 ~ 9 any claim, it is characterised in that: packet
Electric car fore sub frame is included, the bottom before lower swing arm mounting hole (1.3) and suspension after the suspension on electric car fore sub frame
Lower swing arm (11) lower swing arm (10) and suspension before is separately installed with after suspension at arm mounting hole (1.4)；In turning machine mounting base
(1.6) and at mounting hole (1.7) turning machine is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910188429.0A CN109808772A (en) | 2019-03-13 | 2019-03-13 | A kind of electric car fore sub frame and front suspension apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910188429.0A CN109808772A (en) | 2019-03-13 | 2019-03-13 | A kind of electric car fore sub frame and front suspension apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109808772A true CN109808772A (en) | 2019-05-28 |
Family
ID=66608818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910188429.0A Pending CN109808772A (en) | 2019-03-13 | 2019-03-13 | A kind of electric car fore sub frame and front suspension apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109808772A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114585526A (en) * | 2019-10-25 | 2022-06-03 | 卡特彼勒公司 | Space frame front lower suspension connecting piece |
| CN115157991A (en) * | 2022-07-12 | 2022-10-11 | 东风汽车集团股份有限公司 | Dual-motor electric drive assembly suspension system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07117725A (en) * | 1993-10-22 | 1995-05-09 | Nissan Motor Co Ltd | Front body structure of electric vehicle |
| CN201165249Y (en) * | 2007-12-14 | 2008-12-17 | 中顺汽车控股有限公司 | Automobile front sub-frame |
| CN202541638U (en) * | 2012-04-28 | 2012-11-21 | 安徽江淮汽车股份有限公司 | Pickup vehicle frame assembly |
| JP2014069654A (en) * | 2012-09-28 | 2014-04-21 | Nissan Motor Co Ltd | Vehicle body front structure |
| CN207697819U (en) * | 2017-12-27 | 2018-08-07 | 长城汽车股份有限公司 | Fore sub frame |
| CN210011800U (en) * | 2019-03-13 | 2020-02-04 | 贵州长江汽车有限公司 | Front auxiliary frame and front suspension device of electric automobile |
-
2019
- 2019-03-13 CN CN201910188429.0A patent/CN109808772A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07117725A (en) * | 1993-10-22 | 1995-05-09 | Nissan Motor Co Ltd | Front body structure of electric vehicle |
| CN201165249Y (en) * | 2007-12-14 | 2008-12-17 | 中顺汽车控股有限公司 | Automobile front sub-frame |
| CN202541638U (en) * | 2012-04-28 | 2012-11-21 | 安徽江淮汽车股份有限公司 | Pickup vehicle frame assembly |
| JP2014069654A (en) * | 2012-09-28 | 2014-04-21 | Nissan Motor Co Ltd | Vehicle body front structure |
| CN207697819U (en) * | 2017-12-27 | 2018-08-07 | 长城汽车股份有限公司 | Fore sub frame |
| CN210011800U (en) * | 2019-03-13 | 2020-02-04 | 贵州长江汽车有限公司 | Front auxiliary frame and front suspension device of electric automobile |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114585526A (en) * | 2019-10-25 | 2022-06-03 | 卡特彼勒公司 | Space frame front lower suspension connecting piece |
| CN114585526B (en) * | 2019-10-25 | 2023-06-02 | 卡特彼勒公司 | Front lower suspension link and method therefor |
| CN115157991A (en) * | 2022-07-12 | 2022-10-11 | 东风汽车集团股份有限公司 | Dual-motor electric drive assembly suspension system |
| CN115157991B (en) * | 2022-07-12 | 2024-10-01 | 东风汽车集团股份有限公司 | Dual-motor electric drive assembly suspension system |
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