CN112721602B - Power assembly suspension system - Google Patents
Power assembly suspension system Download PDFInfo
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- CN112721602B CN112721602B CN202110199178.3A CN202110199178A CN112721602B CN 112721602 B CN112721602 B CN 112721602B CN 202110199178 A CN202110199178 A CN 202110199178A CN 112721602 B CN112721602 B CN 112721602B
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- 239000000725 suspension Substances 0.000 title claims abstract description 327
- 230000033001 locomotion Effects 0.000 claims abstract description 11
- 238000002955 isolation Methods 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 10
- 230000005540 biological transmission Effects 0.000 description 19
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000007423 decrease Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
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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
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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
- B60K17/06—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location or kind of gearing of change-speed gearing
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- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
Abstract
The invention relates to a powertrain suspension system, comprising: a motor; the gearbox is connected with the motor and is positioned behind the motor; the front suspension bracket is positioned in front of the motor, one end of the front suspension bracket is connected to the front end of the motor, and the other end of the front suspension bracket is used for being connected with a frame; a rear suspension bracket including a left rear suspension bracket connected to the left side of the gearbox and a right rear suspension bracket connected to the right side of the gearbox. According to the power assembly suspension system, the front suspension bracket is arranged in front of the motor, so that the size of the whole power assembly suspension system in the width direction of a vehicle is not too large, and the arrangement space is sufficient; and the front suspension support is arranged in front of the motor, the front span and the rear span of the power assembly suspension system are increased, so that the front suspension support and the rear suspension support can better limit the rotation motion of the power assembly in the front-rear direction, and the vibration isolation effect of the power assembly suspension system is better.
Description
Technical Field
The invention relates to the technical field of electric vehicles, in particular to a power assembly suspension system.
Background
At present, in the field of electric automobiles, because the power assembly of the electric automobile is smaller than the engine assembly of the traditional fuel automobile in spatial arrangement, the electric automobiles obtain the attention of automobile manufacturers at home and abroad, and the industrial research and development are being vigorously carried out.
In the related technology, the suspension system of the power assembly of the electric commercial vehicle comprises a rear suspension assembly, a left front suspension assembly and a right front suspension assembly, wherein the rear suspension assembly comprises a shoe-shaped beam, the bottom of a gearbox is fixed on a middle flat beam at the bottom of the shoe-shaped beam through a bolt, and the top of the gearbox is fixed on a reinforcing cross beam at the top of the shoe-shaped beam through a bolt; two ends of the reinforced crossbeam extend outwards, rear suspension cushions are fixed below the extending parts and are fixed on the left longitudinal beam and the right longitudinal beam through the rear suspension cushions; the left front suspension assembly comprises a left front suspension bracket, the lower part of the left front suspension bracket is connected with the motor assembly, and the upper part of the left front suspension bracket is fixed on the left longitudinal beam through a left front suspension cushion component; the right front suspension assembly comprises a right front suspension bracket, the lower part of the right front suspension bracket is connected with the motor assembly, and the upper part of the right front suspension bracket is fixed on the right longitudinal beam through a right front suspension cushion component.
However, the motor diameter is large, and in addition, the left front suspension assembly and the right front suspension assembly on the left side and the right side of the motor make the whole layout space of the power assembly suspension system in the width direction of the vehicle insufficient, and under the condition that the power assembly is short, the front span and the rear span of the power assembly suspension system are small, so that the limitation of the rotary motion of the power assembly in the front-rear direction is poor, and the vibration isolation effect is poor.
Therefore, there is a need for a new powertrain suspension system that overcomes the above-mentioned problems.
Disclosure of Invention
The embodiment of the invention provides a power assembly suspension system, which aims to solve the problems that the whole power assembly suspension system in the related art is insufficient in arrangement space in the width direction of a vehicle, the front span and the rear span of the power assembly suspension system are small, the limitation on the rotary motion of the power assembly in the front-rear direction is poor, and the vibration isolation effect is poor under the condition that the power assembly is short.
In a first aspect, a powertrain suspension system is provided, comprising: a motor; the gearbox is connected with the motor and is positioned behind the motor; the front suspension bracket is positioned in front of the motor, one end of the front suspension bracket is connected to the front end of the motor, and the other end of the front suspension bracket is used for being connected with a frame; a rear suspension bracket including a left rear suspension bracket connected to the left side of the gearbox and a right rear suspension bracket connected to the right side of the gearbox.
In some embodiments, the front suspension bracket includes a left front suspension bracket and a right front suspension bracket arranged side by side, and both the left front suspension bracket and the right front suspension bracket are connected with the front end of the motor.
In some embodiments, the left front suspension bracket and the right front suspension bracket are each substantially quadrangular frustum pyramid shaped, and the left front suspension bracket and the right front suspension bracket extend obliquely away from each other from a connection with the motor.
In some embodiments, an extension of the left front suspension bracket centerline intersects the extension of the right front suspension bracket centerline at the torque axis of the motor and the transmission.
In some embodiments, the front suspension bracket further comprises a cross member for connecting the frame, the cross member being connected to the left front suspension bracket by a left front suspension cushion and the cross member being connected to the right front suspension bracket by a right front suspension cushion.
In some embodiments, the left front suspension pad has a left pillar connected to the left front suspension bracket, the left pillar is perpendicular to the cross member, the right front suspension pad has a right pillar connected to the right front suspension bracket, the right pillar is perpendicular to the cross member, and the right pillar and the left pillar both extend obliquely in directions approaching each other.
In some embodiments, the left rear suspension bracket is connected to the frame by a left rear suspension cushion, and the transmission has a first interface connected to the left rear suspension bracket that is approximately the same height as the left rear suspension cushion; the suspension support behind the right side through the suspension cushion behind the right side with connected to the frame, the gearbox have with the second interface that the suspension support is connected behind the right side, the second interface with the height of suspension cushion behind the right side is roughly the same, simultaneously, behind the right side the suspension cushion with the height of suspension cushion behind the left side is roughly the same.
In some embodiments, the left rear suspension bracket has a first horizontal portion connected to the left rear suspension bolster, and a first vertical portion attached to a left side of the transmission case, the first vertical portion connected to the first horizontal portion and perpendicular to the first horizontal portion; the suspension support has behind the right side with the second horizontal part that right back suspension cushion is connected, and with the vertical portion of second of gearbox right side laminating, the vertical portion of second is connected the second horizontal part and with the second horizontal part is perpendicular.
In some embodiments, the first vertical portion has a first mounting hole connected to the first interface, the first mounting hole being located at a connection of the first vertical portion and the first horizontal portion; the second vertical part is provided with a second mounting hole connected with the second interface, and the second mounting hole is positioned at the joint of the second vertical part and the second horizontal part.
In some embodiments, the first horizontal portion has a cross-sectional dimension gradually decreasing from a connection with the first vertical portion toward the left rear suspension pad, and the first horizontal portion is provided with at least two third mounting holes connected with the left rear suspension pad; the cross sectional dimension of second horizontal part from with the junction of the vertical portion of second to the direction of right back suspension cushion reduces gradually, just the second horizontal part be equipped with two at least fourth mounting holes that right back suspension cushion is connected.
The technical scheme provided by the invention has the beneficial effects that:
the embodiment of the invention provides a power assembly suspension system, because the front suspension bracket is arranged in front of a motor, the front suspension bracket does not occupy the space on the left side and the right side of the motor, so that the size of the whole power assembly suspension system in the width direction of a vehicle is not too large, and the arrangement space is sufficient; and the front suspension support is arranged in front of the motor, the front span and the rear span of the power assembly suspension system are increased, so that the front suspension support and the rear suspension support can better limit the rotation motion of the power assembly in the front-rear direction, and the vibration isolation effect of the power assembly suspension system is better.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a powertrain suspension system according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a front suspension bracket of a powertrain suspension system according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a front right suspension bracket of a powertrain suspension system provided in an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a right rear suspension bracket and a right rear suspension cushion of a powertrain suspension system provided in an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a rear right suspension bracket of a powertrain suspension system provided in an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a left rear suspension bracket and a left rear suspension cushion of a powertrain suspension system according to an embodiment of the present invention.
In the figure:
1. a motor;
2. a gearbox;
3. a front suspension bracket; 31. a left front suspension bracket; 32. a right front suspension bracket; 33. a cross beam; 34. a left front suspension cushion; 341. a left pillar; 35. a right front suspension cushion; 351. a right strut;
4. a rear suspension bracket; 41. a left rear suspension bracket; 411. a first horizontal portion; 4111. a third mounting hole; 412. a first vertical portion; 4121. a first mounting hole; 42. a right rear suspension bracket; 421. a second horizontal portion; 4211. a fourth mounting hole; 422. a second vertical portion; 4221. a second mounting hole; 43. a left rear suspension cushion; 44. a right rear suspension cushion;
5. a vehicle frame.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
The embodiment of the invention provides a power assembly suspension system, which can solve the problems that the whole power assembly suspension system in the related art is insufficient in arrangement space in the width direction of a vehicle, the front span and the rear span of the power assembly suspension system are small, the limitation on the rotation motion of the power assembly in the front-rear direction is poor, and the vibration isolation effect is poor under the condition that the power assembly is short.
Referring to fig. 1, a powertrain suspension system provided for an embodiment of the present invention may include: a motor 1; the gearbox 2 is connected with the motor 1 and is positioned behind the motor 1, in the embodiment, the motor 1 and the gearbox 2 form a power assembly, and the motor 1 and the gearbox 2 have 6 degrees of freedom as a whole; the front suspension bracket 3 can be positioned in front of the motor 1, one end of the front suspension bracket 3 is connected to the front end of the motor 1, and the other end of the front suspension bracket 3 is used for being connected with the frame 5 so as to fix the front end of the power assembly with the frame 5; the rear suspension bracket 4 can comprise a left rear suspension bracket 41 connected with the left side of the gearbox 2 and a right rear suspension bracket 42 connected with the right side of the gearbox 2, the rear suspension bracket 4 is used for fixing the rear end of the power assembly with the frame 5, the left rear suspension bracket 41 is directly connected with the left side of the gearbox 2, the right rear suspension bracket 42 is directly connected with the right side of the gearbox 2, the distance between the gearbox 2 and the left rear suspension bracket 41 and the distance between the gearbox 2 and the right rear suspension bracket 42 are both short, the left rear suspension bracket 41 and the right rear suspension bracket 42 can better bear the reaction force transmitted by the gearbox 2 and can bear larger reaction force, and meanwhile, the front suspension bracket 3 is positioned in front of the motor 1, so that the size of the whole power assembly suspension system in the width direction of the vehicle is not too large, and the arrangement space is sufficient; and the front span and the rear span of the power assembly suspension system are larger, so that the front suspension support 3 and the rear suspension support 4 can better limit the rotary motion of the power assembly in the front-rear direction, and the vibration isolation effect is better.
Referring to fig. 1 and 2, in some embodiments, the front suspension bracket 3 may include a left front suspension bracket 31 and a right front suspension bracket 32 disposed side by side, and both the left front suspension bracket 31 and the right front suspension bracket 32 may be connected to the front end of the motor 1 through bolts, so that the powertrain suspension system has two support points (i.e., the left front suspension bracket 31 and the right front suspension bracket 32) at the front to be connected to the frame 5 and two support points (i.e., the left rear suspension bracket 41 and the right rear suspension bracket 42) at the rear to be connected to the frame 5, thereby forming a four-point suspension arrangement and ensuring better stability of the powertrain suspension system under severe conditions.
Referring to fig. 2 and 3, in some alternative embodiments, both the left front suspension bracket 31 and the right front suspension bracket 32 may be substantially quadrangular frustum pyramid shaped, specifically, in this embodiment, the cross-sectional dimension of the end of the left front suspension bracket 31 connected to the motor 1 is larger to ensure the stable connection with the motor 1, and the cross-sectional dimension of the left front suspension bracket 31 gradually decreases from the connection with the motor 1 to the other end thereof (i.e., the front end of the left front suspension bracket 31), and the cross-sectional dimension of the end of the right front suspension bracket 32 connected to the motor 1 is also larger to ensure the stable connection with the motor 1, and the cross-sectional dimension of the right front suspension bracket 32 gradually decreases from the connection with the motor 1 to the other end thereof (i.e., the front end of the right front suspension bracket 32), so as to ensure that the volumes of the left front suspension bracket 31 and the right front suspension bracket 32 are reduced as much as possible under the condition of satisfying the stress strength, the occupied space of the whole vehicle is reduced; meanwhile, the left front suspension bracket 31 and the right front suspension bracket 32 can extend obliquely from the connection part with the motor 1 to the direction away from each other, and the distance between the tail end of the left front suspension bracket 31 and the tail end of the right front suspension bracket 32 is as large as possible within an allowable range, so that the stability of the power assembly suspension system can be improved; in other embodiments, the left front suspension bracket 31 and the right front suspension bracket 32 may be disposed in parallel.
Referring to fig. 1 and 2, further, an extension line of a center line of the left front suspension bracket 31 and an extension line of a center line of the right front suspension bracket 32 intersect with a torque shaft of the motor 1 and the transmission case 2 (i.e., a torque shaft of the powertrain), that is, an extension line of a center line of the left front suspension bracket 31 in the front-back direction and an extension line of a center line of the right front suspension bracket 32 in the front-back direction intersect with the torque shaft of the motor 1 and the transmission case 2, so that the left front suspension bracket 31 and the right front suspension bracket 32 can better bear a moment generated by the motor 1, and a good vibration isolation effect of the front suspension bracket 3 is ensured.
Referring to fig. 1 and 2, in some embodiments, the front suspension bracket 3 may further include a cross beam 33 for connecting the vehicle frame 5, the cross beam 33 may be connected to the left front suspension bracket 31 through a left front suspension cushion 34, and the cross beam 33 may be connected to the right front suspension bracket 32 through a right front suspension cushion 35, in this embodiment, the left front suspension bracket 31, the left front suspension cushion 34, and the cross beam 33 may be connected by bolts, and the right front suspension bracket 32, the right front suspension cushion 35, and the cross beam 33 may also be connected by bolts, the left front suspension bracket 31 and the right front suspension bracket 32 may be connected to the vehicle frame 5 by the arrangement of the cross beam 33, and the left front suspension bracket 31 may be directly connected to the left front suspension cushion 34 located therebelow, and the right front suspension bracket 32 may be directly connected to the right front suspension cushion 35 located therebelow, the problem that the left front suspension bracket 31 and the right front suspension bracket 32 are weak in strength due to the fact that the left front suspension bracket 31 and the right front suspension bracket 32 are required to be longer because the left front suspension bracket 31 and the right front suspension bracket 32 are directly connected with the frame 5 is solved; meanwhile, in this embodiment, the left front suspension bracket 31 and the right front suspension bracket 32 are arranged above the cross beam 33, so that the clearance between the power assembly and the ground is large, and the trafficability characteristic is good.
Referring to fig. 1 and 2, further, the left front suspension mat 34 may have a left pillar 341 connected to the left front suspension bracket 31, the left pillar 341 may be perpendicular to the cross beam 33 so that the left pillar 341 directly transmits the reaction force to the cross beam 33, the right front suspension mat 35 may have a right pillar 351 connected to the right front suspension bracket 32, the right pillar 351 may be perpendicular to the cross beam 33 so that the right pillar 351 directly transmits the reaction force to the cross beam 33, and the right pillar 351 and the left pillar 341 both extend obliquely in a direction close to each other, that is, in a vertical direction, the left pillar 341 and the right pillar 351 are both inclined, and a lower end of the left pillar 341 is spaced far from a lower end of the right pillar 351, and an upper end of the left pillar 341 is spaced close to an upper end of the right pillar 351 so that the force of the left pillar 341 can be decomposed into a vertical direction (i.e., up-down direction) and left-right direction, the power assembly is fixed in two directions, so that the power assembly is more stable, and the left support column 341 can perform vibration isolation in two directions, so that the vibration isolation effect is better; in a similar way, the acting force of the right support 351 can be decomposed into a vertical direction (namely, an upper direction and a lower direction) and a left direction and a right direction, and the power assembly is fixed in the two directions, so that the power assembly is more stable, and the right support 351 can perform vibration isolation in the two directions, and the vibration isolation effect is better.
Referring to fig. 1 and 6, in some embodiments, the left rear suspension bracket 41 may be connected to the frame 5 by a left rear suspension pad 43, and the transmission 2 may have a first interface connected to the left rear suspension bracket 41, the first interface being approximately the same height as the left rear suspension pad 43; the right rear suspension bracket 42 may be connected to the frame 5 by a right rear suspension bolster 44, the transmission 2 may have a second interface connected to the right rear suspension bracket 42, the second interface being approximately the same height as the right rear suspension bolster 44, meanwhile, the right rear suspension cushion 44 and the left rear suspension cushion 43 are substantially the same in height, that is, the right rear suspension cushion 44, the left rear suspension cushion 43, the first interface, and the second interface are substantially the same in height, so that under the condition that the whole vehicle position of the power assembly (the motor 1 and the gearbox 2) is lower, the left rear suspension bracket 41 and the right rear suspension bracket 42 do not need to be additionally provided with a frame for connecting the gearbox 2, the left rear suspension bracket 41 and the right rear suspension bracket 42 have simple structures and light weight, meanwhile, the left rear suspension bracket 41 and the right rear suspension bracket 42 are relatively short in length and high in strength, and can bear large reaction force.
As shown in fig. 4 and 6, further, the left rear suspension bracket 41 may have a first horizontal portion 411 connected to the left rear suspension pad 43, and a first vertical portion 412 attached to the left side of the transmission case 2, that is, the first vertical portion 412 is fixed to the first interface of the transmission case 2, the first vertical portion 412 is connected to the first horizontal portion 411 and is perpendicular to the first horizontal portion 411, so that the left rear suspension bracket 41 is substantially L-shaped, and since the first horizontal portion 411 connected to the left rear suspension pad 43 and the first vertical portion 412 connected to the transmission case 2 are perpendicular to each other, the contact surface of the left rear suspension bracket 41 and the left rear suspension pad 43 and the contact surface of the left rear suspension bracket 41 and the transmission case 2 are perpendicular to each other, and the perpendicular arrangement can prevent the left rear suspension pad 43 from being detached from the transmission case 2 more than the contact surfaces of the left rear suspension pad 43 and the transmission case 2 are parallel to each other; the right rear suspension bracket 42 has a second horizontal portion 421 connected to the right rear suspension cushion 44, and a second vertical portion 422 attached to the right side of the transmission case 2, that is, the second vertical portion 422 is fixed to a second interface of the transmission case 2, and the second vertical portion 422 is connected to the second horizontal portion 421 and is perpendicular to the second horizontal portion 421, so that the right rear suspension bracket 42 is substantially L-shaped, and since the second horizontal portion 421 connected to the right rear suspension cushion 44 and the second vertical portion 422 connected to the transmission case 2 are perpendicular to each other, a contact surface of the right rear suspension bracket 42 and the right rear suspension cushion 44 and a contact surface of the right rear suspension bracket 42 and the transmission case 2 are perpendicular to each other, and the perpendicular arrangement can prevent the right rear suspension cushion 44 from being separated from the transmission case 2 more than that the contact surfaces of the right rear suspension cushion 44 and the transmission case 2 are parallel to each other.
Referring to fig. 4 to 6, further, the first vertical portion 412 may have first mounting holes 4121 connected to the first interface, and the first mounting holes 4121 are located at a connection position of the first vertical portion 412 and the first horizontal portion 411, in this embodiment, there are 4 first mounting holes 4121, and the 4 first mounting holes 4121 are fixed to the first interface through bolts, so that the distance between the first mounting holes 4121 and the first horizontal portion 411 in the vertical direction is minimized due to the first mounting holes 4121 being located at the connection position of the first vertical portion 412 and the first horizontal portion 411, and the situation that the left rear suspension bracket 41 has poor torque bearing capability due to a large distance between the first horizontal portion 411 and the first mounting holes 4121 is avoided; the second vertical portion 422 may have a second mounting hole 4221 connected to the second interface, and the second mounting hole 4221 is located at a connection position between the second vertical portion 422 and the second horizontal portion 421, in this embodiment, there are also 4 second mounting holes 4221, and the 4 second mounting holes 4221 are fixed to the second interface through bolts, so that the distance between the second mounting hole 4221 and the second horizontal portion 421 in the vertical direction is minimized due to the second mounting hole 4221 being located at the connection position between the second vertical portion 422 and the second horizontal portion 421, and the situation that the right rear suspension bracket 42 has poor torque bearing capability due to a large distance between the second horizontal portion 421 and the second mounting hole 4221 is avoided.
Referring to fig. 4 to 6, further, the cross-sectional size of the first horizontal portion 411 may be gradually reduced from the connection with the first vertical portion 412 toward the left rear suspension cushion 43, so as to reduce the size of the first horizontal portion 411 as much as possible while meeting the stress requirement, and at the same time, the first horizontal portion 411 may be conveniently fixed to the left rear suspension cushion 43 at the smaller end of the first horizontal portion 411, so as to avoid the left rear suspension cushion 43 from being larger in its housing for being fixed to the first horizontal portion 411, thereby saving the arrangement space, and the first horizontal portion 411 is provided with at least two third mounting holes 4111 connected to the left rear suspension cushion 43, and the third mounting holes 4111 may also be connected to the left rear suspension cushion 43 by bolts, so as to ensure the reliability of the connection between the first horizontal portion 411 and the left rear suspension cushion 43 by providing a plurality of third mounting holes 4111; the cross-sectional size of the second horizontal portion 421 may be gradually reduced from the connection with the second vertical portion 422 toward the right rear suspension pad 44, so as to reduce the size of the second horizontal portion 421 as much as possible under the condition of meeting the stress requirement, and at the same time, the smaller end of the second horizontal portion 421 is convenient to be fixed with the right rear suspension pad 44, so as to avoid the right rear suspension pad 44 from needing to be made larger in its outer shell for being fixed with the second horizontal portion 421, thereby saving the arrangement space, and the second horizontal portion 421 is provided with at least two fourth mounting holes 4211 connected with the right rear suspension pad 44, and the fourth mounting holes 4211 may also be connected with the right rear suspension pad 44 by bolts, and the reliability of connection between the second horizontal portion 421 and the right rear suspension pad 44 is ensured by providing a plurality of fourth mounting holes 4211.
The principle of the power assembly suspension system provided by the embodiment of the invention is as follows:
because the front suspension bracket 3 is arranged in front of the motor 1, the front suspension bracket 3 does not occupy the space on the left side and the right side of the motor 1, so that the size of the whole power assembly suspension system in the width direction of the vehicle is not too large, and the arrangement space is sufficient; the front suspension bracket 3 is arranged in front of the motor 1, so that the front span and the rear span of the power assembly suspension system are increased, the front suspension bracket 3 and the rear suspension bracket 4 can better limit the rotation motion of the power assembly in the front-rear direction, and the vibration isolation effect of the power assembly suspension system is better; meanwhile, the left rear suspension bracket 41 is directly connected with the left side of the gearbox 2, the right rear suspension bracket 42 is directly connected with the right side of the gearbox 2, the gearbox 2 is closer to the left rear suspension bracket 41 and the right rear suspension bracket 42, the left rear suspension bracket 41 and the right rear suspension bracket 42 can better bear the reaction force transmitted by the gearbox 2, and the reaction force is larger.
In the description of the present invention, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present invention. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
It is to be noted that, in the present invention, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. A powertrain suspension system, comprising:
a motor (1);
the gearbox (2) is connected with the motor (1) and is positioned behind the motor (1);
the front suspension bracket (3) is positioned in front of the motor (1), one end of the front suspension bracket (3) is connected to the front end of the motor (1), and the other end of the front suspension bracket is used for being connected with a frame (5);
a rear suspension bracket (4) comprising a left rear suspension bracket (41) connecting the left side of the gearbox (2) and a right rear suspension bracket (42) connecting the right side of the gearbox (2);
the front suspension bracket (3) comprises a left front suspension bracket (31) and a right front suspension bracket (32) which are arranged side by side, and the left front suspension bracket (31) and the right front suspension bracket (32) are both connected with the front end of the motor (1);
the left front suspension bracket (31) and the right front suspension bracket (32) are both approximately quadrangular frustum pyramid-shaped, and the left front suspension bracket (31) and the right front suspension bracket (32) both extend forwards along the axial direction of the motor (1), so that the outer side surface of the left front suspension bracket (31) and the outer side surface of the right front suspension bracket (32) are both positioned at the inner side of the outer surface of the motor (1) in the left-right direction;
and the inner side surface of the left front suspension bracket (31) and the inner side surface of the right front suspension bracket (32) extend obliquely from the connection part of the left front suspension bracket and the motor (1) to the direction away from each other.
2. The powertrain suspension system of claim 1, wherein:
and the extension line of the central line of the left front suspension bracket (31) and the extension line of the central line of the right front suspension bracket (32) are intersected with the torque shafts of the motor (1) and the gearbox (2).
3. The powertrain suspension system of claim 1, wherein:
front suspension support (3) are still including being used for connecting crossbeam (33) of frame (5), crossbeam (33) through left front suspension cushion (34) with left side front suspension support (31) are connected, just crossbeam (33) through right front suspension cushion (35) with right front suspension support (32) are connected.
4. The locomotion assembly suspension system of claim 3, wherein:
the left front suspension mat (34) has a left strut (341) connected to the left front suspension bracket (31), the left strut (341) being perpendicular to the cross member (33),
the right front suspension pad (35) has a right strut (351) connected to the right front suspension bracket (32), the right strut (351) is perpendicular to the cross member (33), and the right strut (351) and the left strut (341) both extend obliquely in directions approaching each other.
5. The powertrain suspension system of claim 1, wherein:
the left rear suspension bracket (41) is connected with the frame (5) through a left rear suspension cushion (43), the gearbox (2) is provided with a first interface connected with the left rear suspension bracket (41), and the first interface and the left rear suspension cushion (43) have approximately the same height;
right back suspension support (42) through right back suspension cushion (44) with frame (5) are connected, gearbox (2) have with the second interface that right back suspension support (42) are connected, the second interface with the height of right back suspension cushion (44) is roughly the same, simultaneously, right back suspension cushion (44) with the height of left back suspension cushion (43) is roughly the same.
6. The locomotion assembly suspension system of claim 5, wherein:
the left rear suspension bracket (41) is provided with a first horizontal part (411) connected with the left rear suspension cushion (43) and a first vertical part (412) attached to the left side of the gearbox (2), and the first vertical part (412) is connected with the first horizontal part (411) and is perpendicular to the first horizontal part (411);
the right rear suspension support (42) is provided with a second horizontal part (421) connected with the right rear suspension cushion (44), and a second vertical part (422) attached to the right side of the gearbox (2), wherein the second vertical part (422) is connected with the second horizontal part (421) and is perpendicular to the second horizontal part (421).
7. The locomotion assembly suspension system of claim 6, wherein:
the first vertical part (412) is provided with a first mounting hole (4121) connected with the first interface, and the first mounting hole (4121) is positioned at the connection part of the first vertical part (412) and the first horizontal part (411);
the second vertical portion (422) has a second mounting hole (4221) connecting the second interface, and the second mounting hole (4221) is located at a connection of the second vertical portion (422) and the second horizontal portion (421).
8. The locomotion assembly suspension system of claim 6, wherein:
the cross-sectional dimension of the first horizontal part (411) is gradually reduced from the connection part with the first vertical part (412) to the direction of the left rear suspension cushion (43), and the first horizontal part (411) is provided with at least two third mounting holes (4111) connected with the left rear suspension cushion (43);
the cross-sectional dimension of the second horizontal part (421) is gradually reduced from the joint with the second vertical part (422) to the direction of the right rear suspension cushion (44), and the second horizontal part (421) is provided with at least two fourth mounting holes (4211) connected with the right rear suspension cushion (44).
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| CN115402077A (en) * | 2022-08-31 | 2022-11-29 | 东风商用车有限公司 | New energy vehicle motor assembly suspension system structure |
| CN115384291A (en) * | 2022-08-31 | 2022-11-25 | 东风商用车有限公司 | Motor gearbox assembly suspension system structure |
| CN118849735A (en) * | 2024-08-05 | 2024-10-29 | 东风商用车有限公司 | A dual-motor power uninterrupted EMT assembly suspension system structure |
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