CN114715275A - Chassis structure and electric automobile - Google Patents
Chassis structure and electric automobile Download PDFInfo
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- CN114715275A CN114715275A CN202210285235.4A CN202210285235A CN114715275A CN 114715275 A CN114715275 A CN 114715275A CN 202210285235 A CN202210285235 A CN 202210285235A CN 114715275 A CN114715275 A CN 114715275A
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- 239000000725 suspension Substances 0.000 claims abstract description 48
- 230000000712 assembly Effects 0.000 claims description 33
- 238000000429 assembly Methods 0.000 claims description 33
- 230000035939 shock Effects 0.000 claims description 29
- 239000006096 absorbing agent Substances 0.000 claims description 26
- 238000009434 installation Methods 0.000 claims description 9
- 230000001419 dependent effect Effects 0.000 claims description 8
- 239000003381 stabilizer Substances 0.000 claims description 7
- 238000005192 partition Methods 0.000 description 18
- 238000011161 development Methods 0.000 description 14
- 238000003466 welding Methods 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 5
- 239000011295 pitch Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 238000012546 transfer Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
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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
- B60B35/02—Dead axles, i.e. not transmitting torque
- B60B35/10—Dead axles, i.e. not transmitting torque adjustable for varying track
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B37/00—Wheel-axle combinations, e.g. wheel sets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
- B62D21/14—Understructures, i.e. chassis frame on which a vehicle body may be mounted of adjustable length or width
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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Abstract
The invention discloses a chassis structure and an electric automobile, wherein the chassis structure comprises a lower automobile body and a chassis, the chassis comprises a front shaft assembly and a rear shaft assembly, the front shaft assembly comprises a front wheel assembly arranged on the lower automobile body, the front wheel assembly comprises two front wheel structures arranged at intervals in the left-right direction, the rear shaft assembly comprises a rear wheel assembly, the rear wheel assembly comprises two rear wheel structures arranged at intervals in the left-right direction, and the chassis structures can form different chassis combinations, wherein: the interval between front wheel assembly and the rear wheel assembly is adjustable, interval between two front wheel structures is adjustable, interval between two rear wheel structures is adjustable, the rear axle subassembly can set up to independent suspension rear axle subassembly or non-independent suspension rear axle subassembly, select independent suspension rear axle subassembly or non-independent suspension rear axle subassembly to connect in automobile body down, through adjustment chassis structure wheel base and wheel base, and the switching of rear axle subassembly, so that the chassis structure that integrates can be applicable to many platform motorcycle types.
Description
Technical Field
The invention relates to the technical field of automobile chassis, in particular to a chassis structure and an electric automobile.
Background
The chassis generally refers to a mechanical structure composed of a suspension system, a steering system, a braking system, a transmission system and the like, and the construction of the chassis structure can shorten the development period of the same platform vehicle type and reduce the development cost. However, the upper vehicle body and the lower vehicle body of the conventional electric vehicle cannot be separately designed, so that the upper vehicle body can greatly influence the development of the lower vehicle body, the chassis sharing among different platform vehicle types is low, the chassis is often required to be redesigned, and the development cycle of the vehicle is prolonged and the development cost is increased.
Disclosure of Invention
The invention mainly aims to provide a chassis structure and an electric automobile, and aims to solve the problem that an upper automobile body and a lower automobile body of an existing electric automobile cannot be separately designed, so that the chassis sharing among different platform automobile types is low.
In order to achieve the above object, the present invention provides a chassis structure, including a lower vehicle body and a chassis, where the chassis includes a front axle assembly and a rear axle assembly, the front axle assembly includes a front wheel assembly disposed on the lower vehicle body, the front wheel assembly includes two front wheel structures disposed at intervals in a left-right direction, the rear axle assembly includes a rear wheel assembly, the rear wheel assembly includes two rear wheel structures disposed at intervals in the left-right direction, and the chassis structure can form different chassis combinations, where:
the distance between the front wheel assembly and the rear wheel assembly is adjustable; and/or the presence of a gas in the gas,
the distance between the two front wheel structures is adjustable; and/or the presence of a gas in the gas,
the distance between the two rear wheel structures is adjustable; and/or the presence of a gas in the gas,
the rear axle assembly can be configured as an independent suspension rear axle assembly or a dependent suspension rear axle assembly, the independent suspension rear axle assembly or the dependent suspension rear axle assembly selected to be coupled to the lower vehicle body.
Optionally, the lower body comprises a lower body and a connecting frame arranged on the lower body;
the non-independent suspension rear axle assembly includes:
the rear plate spring assembly is arranged on the connecting frame;
the rear axle structure is arranged on the rear plate spring assembly, extends in the left-right direction, and is arranged at two ends of the rear axle structure;
one end of the first rear shock absorber assembly is arranged on the rear axle structure, and the other end of the first rear shock absorber assembly is connected to the lower vehicle body; and the number of the first and second groups,
the first rear brake assembly is arranged on the rear wheel assembly.
Optionally, the lower vehicle body is provided with a first mounting position and a second mounting position which are arranged at intervals, the first mounting position is positioned at the outer side of the second mounting position, and the connecting frame is arranged at the first mounting position;
the rear axle structure comprises a rear rigid axle arranged on the rear plate spring assembly, and the first rear shock absorber assembly is connected to the rear rigid axle;
each wheel structure comprises first wheels, and the two first wheels are arranged at two ends of the rear rigid axle.
Optionally, the lower vehicle body is provided with a first mounting position and a second mounting position which are arranged at intervals, the first mounting position is positioned at the outer side of the second mounting position, and the connecting frame is arranged at the second mounting position;
the rear axle structure comprises a rear drive axle arranged on the rear plate spring assembly, and the first rear shock absorber assembly is connected to the rear drive axle;
each wheel structure includes a plurality of second wheels, and two sets of a plurality of the second wheels are located the both ends of rear drive axle.
Optionally, the independent suspension rear axle assembly comprises:
the first auxiliary frame is arranged on the lower vehicle body;
the two lower swing arm assemblies are respectively arranged on two sides of the first auxiliary frame, and the two rear wheel structures are respectively arranged on the two lower swing arm assemblies;
one end of the second rear shock absorber assembly is arranged on the lower swing arm assembly, and the other end of the second rear shock absorber assembly is connected to the lower vehicle body;
one end of the rear spring assembly is arranged on the lower swing arm assembly, and the other end of the rear spring assembly is used for connecting an upper vehicle body;
the two upper swing arm assemblies are arranged between the rear shock absorber and the rear wheel;
two ends of the rear stabilizer bar assembly are respectively arranged on the two lower swing arm assemblies, and the middle part of the rear stabilizer bar assembly is hinged to the auxiliary frame; and the number of the first and second groups,
and the second rear brake assembly is arranged on the rear wheel assembly.
Optionally, the front wheel assembly and/or the rear wheel assembly are provided as wheel assemblies, and the offset distances of the rims in the corresponding wheel assemblies are set to be different in the chassis combinations with different specifications.
Optionally, the lower body comprises a lower body and a second auxiliary frame arranged on the lower body, and two mounting portions arranged at intervals in the left-right direction are formed on the second auxiliary frame;
in the chassis combinations with different specifications, the lengths of the corresponding auxiliary frames are set to be different, so that the distance between the two mounting parts is set to be different;
the front wheel structure and/or the rear wheel structure are/is set to be wheel structures, and the two wheel structures are respectively and correspondingly arranged on the two mounting parts.
Optionally, the lower body comprises a front body, a middle body and a rear body which are sequentially connected in the front-back direction, and the two wheel assemblies are respectively arranged on the front body and the rear body;
in the chassis combination of different specifications, the length of the rear vehicle body is set to be different in the front-rear direction, so that the distance between the two wheel assemblies is set to be different.
Optionally, the lower body comprises a front body, a middle body and a rear body which are sequentially connected in the front-back direction, the middle body is provided with a limiting installation structure, and a battery assembly is fixedly installed on the limiting installation structure;
the front wheel assembly and/or the rear wheel assembly are/is set to be a driving wheel assembly, correspondingly, the driving wheel assembly comprises driving motors which respectively drive the two front wheel structures and/or the two rear wheel structures to rotate, and the driving motors are electrically connected with the battery component.
In the technical scheme of the invention, the chassis structure can be adapted to vehicle types with different wheel distances by adjusting the distance between the two front wheel structures and the two rear wheel structures, the chassis structure can be adapted to vehicle types with different wheel distances by adjusting the distance between the front wheel assembly and the rear wheel assembly, the chassis structure can be adapted to vehicle types with different wheel distances by adjusting the wheel distance and the wheel distance of the chassis structure, the chassis structure of different vehicle types can be generalized, in addition, when the rear axle assembly is an independent suspension rear axle assembly, the chassis structure can form a chassis combination for carrying people, when the rear axle assembly is a non-independent suspension rear axle assembly, the chassis structure can form a chassis combination for carrying goods, and on the premise of keeping the rest structures of the chassis structure unchanged by switching the rear axle assembly, the chassis structure can be switched between manned vehicle types and cargo vehicle types, so that the chassis structure of different vehicle types can be generalized, the wheel base and the wheel base of the chassis structure are adjusted, and the rear axle assembly is switched, so that the integrated chassis structure can be suitable for multi-platform vehicle types, the development period of the multi-platform vehicle types is shortened, and the development cost of the multi-platform vehicle types is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic perspective view of a chassis structure according to an embodiment of the present invention;
FIG. 2 is a schematic perspective view of the chassis structure (hidden cover plate) in FIG. 1;
FIG. 3 is a schematic perspective view of a portion of the chassis structure of FIG. 1;
FIG. 4 is a perspective view of an embodiment of the rear axle assembly of the dependent suspension of FIG. 1;
FIG. 5 is a perspective view of another embodiment of the rear axle assembly of the dependent suspension of FIG. 1;
FIG. 6 is a perspective view of an embodiment of the rear axle assembly of the independent suspension of FIG. 1;
FIG. 7 is a front schematic structural view of the front axle assembly of FIG. 1;
FIG. 8 is a perspective view of the second subframe of FIG. 1;
FIG. 9 is a schematic top view of a portion of the chassis structure of FIG. 1;
fig. 10 is a schematic top view of the lower vehicle body in fig. 1.
The reference numbers illustrate:
the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
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 only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, if directional indication is involved in the embodiment of the present invention, the directional indication is only used for explaining the relative positional relationship, the motion situation, and the like between the components in a certain posture, and if the certain posture is changed, the directional indication is changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The chassis generally refers to a mechanical structure consisting of a suspension system, a steering system, a braking system, a transmission system and the like, and the construction of the chassis structure can shorten the development period of the same platform vehicle type and reduce the development cost. However, the upper vehicle body and the lower vehicle body of the conventional electric vehicle cannot be separately designed, so that the upper vehicle body can greatly influence the development of the lower vehicle body, the chassis sharing among different platform vehicle types is low, the chassis is often required to be redesigned, and the development cycle of the vehicle is prolonged and the development cost is increased.
In view of this, the present invention provides a chassis structure, which aims to solve the problem that the upper body and the lower body of the existing electric vehicle cannot be separately designed, so that the chassis sharing among different platform vehicle types is low. Fig. 1 to 10 are schematic structural diagrams of a chassis structure provided in the present invention.
Referring to fig. 1 to 3, the chassis structure 100 includes a lower body 1 and a chassis 2, the chassis 2 includes a front axle assembly 21 and a rear axle assembly 22, the front axle assembly 21 includes a front wheel assembly 211 disposed on the lower body 1, the front wheel assembly 211 includes two front wheel structures disposed at intervals in a left-right direction, the rear axle assembly 22 includes a rear wheel assembly 221, the rear wheel assembly 221 includes two rear wheel structures disposed at intervals in the left-right direction, the chassis structure 100 can form different chassis 2 combinations, wherein: the distance between the front wheel assembly 211 and the rear wheel assembly 221 is adjustable; and/or the spacing between two of said front wheel structures is adjustable; and/or the spacing between two said rear wheel structures is adjustable; and/or rear axle assembly 22 can be configured as an independent suspension rear axle assembly 422 or a non-independent suspension rear axle assembly 3, with either independent suspension rear axle assembly 422 or non-independent suspension rear axle assembly 3 being selectively attachable to lower vehicle body 1.
In the technical solution of the present invention, the chassis structure 100 can be adapted to vehicle types with different wheel pitches by adjusting the distance between the two front wheel structures and the two rear wheel structures, the chassis structure 100 can be adapted to vehicle types with different wheel pitches by adjusting the distance between the front wheel assembly 211 and the rear wheel assembly 221, and the chassis structure 100 can be generalized by adjusting the wheel pitch and the wheel pitch of the chassis structure 100, in addition, when the rear axle assembly 22 is set as an independent suspension rear axle assembly 422, the chassis structure 100 forms a chassis 2 combination capable of being used for carrying people, when the rear axle assembly 22 is a dependent suspension rear axle assembly 3, the chassis structure 100 forms a chassis 2 combination capable of being used for carrying goods, by switching the rear axle assembly 22, on the premise of keeping the remaining structures of the chassis structure 100 unchanged, the chassis structure 100 can be switched between manned vehicle types and cargo vehicle types, so that the chassis structure 100 of different vehicle types can be generalized, and thus the integrated chassis structure 100 can be suitable for multi-platform vehicle types by adjusting the wheel track and the wheel base of the chassis structure 100 and switching the rear axle assembly 22, thereby being beneficial to shortening the development period of the multi-platform vehicle types and reducing the development cost of the multi-platform vehicle types.
It should be noted that, in the present application, front, rear, upper, lower, inner, and the like are defined with reference to the vehicle body, specifically, the length direction of the vehicle body is the front-rear direction, the vehicle head is the front, that is, the traveling direction of the vehicle is the front, and the opposite is the rear, the width direction of the vehicle body is the inner-outer direction, that is, the direction close to the middle of the vehicle body is the inner, and the opposite is the outer, and the height direction of the vehicle body is the up-down direction; it is to be understood that the directional terms are used merely for clarity and convenience in describing the technical solutions, and should not be construed as limiting the scope of the present application.
Further, referring to fig. 4 and 5, the lower vehicle body 1 includes a lower vehicle body 11 and a connecting frame 12 disposed on the lower vehicle body 11, the dependent suspension rear axle assembly 3 includes a rear plate spring assembly 31, a rear axle structure 32, a first rear shock absorber assembly 34 and a first rear brake assembly 33, the rear plate spring assembly 31 is disposed on the connecting frame 12, the rear axle structure 32 is disposed on the rear plate spring assembly 31, the rear axle structure 32 extends in the left-right direction, the two rear wheel structures are disposed at two ends of the rear axle structure 32, one end of the first rear shock absorber assembly 34 is disposed on the rear axle structure 32, the other end is used for connecting to the lower vehicle body, the first rear brake assembly 33 is disposed on the rear wheel assembly 221, and is disposed so as to mount the rear plate spring assembly 31 on the lower vehicle body 1 through the connecting frame 12, and attenuate the rear shock absorber assembly 31 or the rear wheel assembly 221 by disposing the rear plate spring assembly 31 and the rear shock absorber assembly The rear wheel assembly 221 is supported by the rear axle structure 32 while vibrating, and secondly, since the truck type vehicle does not usually need higher comfort, and the control cost is important, the rear plate spring assembly 31, the first rear shock absorber assembly 34 and the first rear brake assembly 33 are usually standard components, and the cost is relatively low, so that the non-independent suspension rear axle assembly 3 has certain shock absorption capability and keeps a certain load capacity, the manufacturing cost of the non-independent suspension rear axle assembly 3 can be effectively reduced, and the non-independent suspension rear axle assembly 3 can be suitable for small-sized trucks.
It is to be understood that the rear leaf spring assemblies 31, the first rear shock absorber assemblies 34, and the first rear brakes are generally two in number and are arranged at intervals in the left-right direction so as to be provided corresponding to the two wheel structures. The connecting frame 12 and the lower body 11 may be connected by bolts or by welding, but the invention is not limited thereto. Specifically, in the present embodiment, the connecting frame 12 is fixed to the lower vehicle body 1 by welding, and further, the rear plate spring assembly 31, the rear axle structure 32, the first rear shock absorber assembly 34, and the first rear brake assembly 33 all adopt detachable connecting structures, so as to facilitate maintenance and replacement.
In order to adapt to the cargo-carrying requirements of different automobiles due to the large difference of cargo-carrying weight, in one embodiment, referring to fig. 4, the lower body 11 is formed with a first mounting position and a second mounting position spaced apart from each other, the first mounting position is located outside the second mounting position, the connecting frame 12 is located at the first mounting position, the rear axle structure 32 includes a rear rigid axle 321 located at the rear plate spring assembly 31, the first rear shock absorber assembly 34 is connected to the rear rigid axle 321, wherein each of the wheel structures includes a first wheel, two of the first wheels are located at two ends of the rear rigid axle 321, and the arrangement is such that the rear rigid axle 321 is arranged to enable the rear axle structure 32 to bear large impact, while helping to increase the load carrying capacity of the non-independent suspension rear axle assembly 3, the non-independent suspension rear axle assembly 3 of this embodiment is generally suitable for use in small trucks because the wheel structure is provided with only one of the first wheels, such that the first rear wheel assembly 221 cannot bear excessive load, and the non-independent suspension rear axle assembly 3 can bear limited load.
In another embodiment, referring to fig. 5, the lower vehicle body 11 is formed with a first mounting position and a second mounting position which are arranged at an interval, the first mounting position is located outside the second mounting position, the connecting frame 12 is located at the second mounting position, the rear axle structure 32 includes a rear drive axle 322 arranged on the rear plate spring assembly 31, the first rear shock absorber assembly 34 is connected to the rear drive axle 322, each wheel structure includes a plurality of second wheels, two sets of the plurality of second wheels are arranged at two ends of the rear drive axle 322, such that the connecting frame 12 is moved toward the middle of the vehicle, so that the wheel structure has a larger space for arranging more second wheels, and such that the non-independent rear axle assembly 22 can bear a larger load by arranging the plurality of second wheels so as to bear a larger weight, meanwhile, the rear drive axle 322 is arranged so as to drive the rear wheel assembly 221, so that insufficient power of the non-independent suspension rear axle assembly 3 caused by too large load is avoided, and the non-independent rear axle assembly 22 can be suitable for heavy trucks.
In order to facilitate adjustment of the rear plate spring assembly 31, in the present embodiment, the connecting frame 12 includes a connecting bracket 121 and a shackle bracket 122 disposed at an interval in the forward and backward directions, wherein one end of the rear plate spring assembly 31 is detachably mounted to the connecting bracket 121, and the other end is detachably mounted to the shackle bracket 122, so that the rear plate spring assembly 31 is easily mounted and dismounted by the shackle bracket 122, and the rear plate spring assembly 31 has a certain adjustment space to facilitate mounting of the rear plate spring assembly 31.
In order to mount the rear axle structure 32 to the rear plate spring assembly 31, the rear axle structure 32 is mounted to the rear plate spring assembly 31 by a U-shaped bolt 35, and the U-shaped bolt 35 is provided to detachably mount the rear axle structure 32 to the rear plate spring assembly 31 for maintenance and replacement. It is understood that there are usually two U-shaped bolts 35, and two U-shaped bolts 35 are arranged at a distance in the left-right direction.
In order to enable the chassis structure 100 to be used for a passenger vehicle, please refer to fig. 6, the independent suspension rear axle assembly 4 includes a first subframe 41, two lower swing arm assemblies 42, a second rear shock absorber assembly 43, a rear spring assembly 44, two upper swing arm assemblies 45, a rear stabilizer bar assembly 46 and a second rear brake assembly 47, the first subframe 41 is disposed on the lower vehicle body 1, the two lower swing arm assemblies 42 are respectively disposed at two ends of the first subframe 41, the two rear wheel structures are respectively disposed on the two lower swing arm assemblies 42, one end of the second rear shock absorber assembly 43 is disposed on the lower swing arm assembly 42, the other end is used for being connected to the lower vehicle body, one end of the rear spring assembly 44 is disposed on the lower swing arm assembly 42, the other end is used for being connected to the upper vehicle body, the upper swing arm assembly 45 is disposed between the rear shock absorber and the rear wheel, two lower swing arm assemblies 42 are respectively arranged at two ends of the rear stabilizer bar assembly 46, the middle part of the rear stabilizer bar assembly 46 is hinged to the first auxiliary frame 41, the second rear brake assembly 47 is arranged on the rear wheel assembly 221, and the first auxiliary frame 41 is arranged so as to be convenient for mounting the lower swing arm assembly 42, and meanwhile, the upper swing arm assembly 45 and the lower swing arm assembly 42 are arranged so that the independent suspension rear axle assembly 4 forms a double-cross arm type independent suspension so as to attenuate the vibration of the automobile body or the second rear wheel assembly 221, thereby being beneficial to improving the comfort of the automobile and enabling the independent suspension rear axle assembly 4 to be suitable for a passenger automobile.
Further, independent suspension rear axle subassembly 4 still includes locates the rear steering gear 48 of first subframe 41, rear steering gear 48 drive connection the rear wheel assembly 221 sets up like this, through setting up rear steering gear 48, so that independent suspension rear axle subassembly 4 can realize the rear wheel and turn to, so that promote independent suspension rear axle subassembly 4's equilibrium and stability for in time adjust the rear wheel angle according to driving environment, bring higher driving limit and the more careful driving experience for the driver.
Further, in order to increase the driving force of the automobile, in this embodiment, the independent suspension rear axle assembly 4 further includes a rear driving motor 49 and a rear driving axle 410, the rear driving motor 49 is disposed on the first subframe 41, one end of the rear driving axle 410 is drivingly connected to the rear driving motor 49, and the other end of the rear driving axle 410 is drivingly connected to the second rear wheel assembly 221, so that the rear driving axle 410 is driven by the rear driving motor 49 to rotate the second rear wheel assembly 221, so that the independent suspension rear axle assembly 4 can realize rear wheel driving, thereby contributing to lifting the driving force of the independent suspension rear axle assembly 4.
In order to adjust the track width of the chassis structure 100, in an embodiment, referring to fig. 7, the front wheel assemblies 211 and/or the rear wheel assemblies 221 are provided as wheel assemblies, and in the chassis 2 assemblies with different specifications, the offset distances of the rims in the corresponding wheel assemblies are set to be different, and each rim usually has a fixed offset distance, and the specifications of the rims are different, and the offset distances are also different, so that the distance between two wheels can be changed by replacing the rims with different specifications to adjust the offset distances. It will be appreciated that the wheel is removably mounted to the lower body 1 to allow replacement of rims of different sizes.
It should be noted that the offset of the rim means that the distance between the center line of the wheel and the hub fastening surface is L1 in the figure, the distance between the two hub fastening surfaces is L2 in the figure, the track of the chassis structure 100 means the distance between the center lines of the two wheels, i.e. the sum of the lengths of L1 and L2 in the figure, and thus the track of the chassis structure 100 can be adjusted by adjusting the length of the offset. Further, the width of the wheel needs to meet the corresponding standard, and cannot be too large or too small, so that in the embodiment, L1 is more than or equal to 0 and less than or equal to 8 mm.
Since the track variation is large when the vehicle type varies greatly, such as a small car and a large bus, and the range of adjusting the track by adjusting the offset distance is limited, thereby limiting the adaptation range of the chassis structure 100, for this reason, please refer to fig. 8, the lower vehicle body 1 includes a lower vehicle body 11 and a second subframe 13 disposed on the lower vehicle body 11, two mounting portions are formed on the second subframe 13 at intervals along the left-right direction, in the chassis 2 combinations of different specifications, the lengths of the corresponding second subframes 13 are set to be different, so that the distances between the two mounting portions are set to be different, wherein, the front wheel structure and/or the rear wheel structure are set to be wheel structures, and the two wheel structures are respectively disposed on the two mounting portions, so that by adjusting the length of the second subframe 13, the distance between the two mounting portions is adjusted (as shown by L2 in the figure) so as to adjust the distance between the two wheels, and the variation range of the length of the second subframe 13 along the left-right direction is far larger than the adjustment range of the offset distance relative to the offset distance of the adjustment rim, so as to ensure that the chassis structure 100 can be adapted to vehicles with different wheel tracks.
Further, the second subframe 13 includes a frame longitudinal beam structure 131 and a frame cross beam structure 132, the frame longitudinal beam structure 131 includes at least two subframe longitudinal beams 1311 disposed at intervals in the left-right direction, two subframe longitudinal beams 1311 are connected to the lower vehicle body 1, the frame cross beam structure 132 includes a subframe cross beam 1321 connected between the two subframe longitudinal beams 1311, in the chassis 2 combinations with different specifications, the length of the corresponding subframe cross beam 1321 is set to be different, so that the subframe cross beam 1321 is replaced between the two subframe longitudinal beams 1311 to adjust the length of the subframe cross beam 1321, so that the subframe longitudinal beams 1311 and the subframe cross beam 1321 can be assembled into the second subframe 13 with different lengths.
It should be noted that there are various connection manners of the subframe longitudinal beam 1311 and the subframe cross beam 1321, the subframe cross beam 1321 may be riveted and fixed to the subframe longitudinal beam 1311, the subframe cross beam 1321 may also be detachable from the subframe longitudinal beam 1311 through a bolt, and the like, but the present invention is not limited thereto, and further, the subframe cross beam 1321 is fixed to the subframe longitudinal beam 1311 through welding, and is configured such that the subframe cross beam 1321 and the subframe longitudinal beam 1311 can form an integral body, so as to ensure that the subframe has sufficient strength, thereby being helpful for supporting a motor or a suspension of an automobile.
It should be noted that the second subframe 13 is of a full-frame structure, and has a better connection rigidity and a better structural rigidity than a non-full-frame structure, and can better absorb collision energy to improve the safety of the vehicle.
Further, in order to improve the connection strength between the subframe cross beam 1321 and the subframe longitudinal beam 1311, in an embodiment, a sleeve connecting structure 133 is arranged between the subframe longitudinal beam 1311 and the subframe cross beam 1321, the sleeve connecting structure 133 includes a sleeve hole and a mounting convex portion which are matched with each other, one of the sleeve hole and the mounting convex portion is arranged on the subframe longitudinal beam 1311, and the other sleeve hole and the mounting convex portion is arranged on the subframe cross beam 1321.
In another embodiment, the end of the subframe cross beam 1321 facing the subframe longitudinal beam 1311 is provided with a slot 1322 for the subframe longitudinal beam 1311 to be clamped, so that the slot 1322 is provided to facilitate the subframe cross beam 1321 to move along the subframe longitudinal beam 1311, so as to adjust the subframe cross beam 1321 to a proper installation position, and to increase the overlapping length of the subframe cross beam 1321 and the subframe longitudinal beam 1311, so as to increase the length of the weld joint, improve the welding strength, and contribute to improving the structural strength of the second subframe 13.
In order to improve the strength of the second subframe 13, in this embodiment, the subframe longitudinal beam 1311 and/or the subframe cross beam 1321 are made of rectangular section bars, and since the rectangular section bars or the circular section bars have high structural strength and good torsion resistance, the structural strength and the torsion resistance of the second subframe 13 can be effectively improved by using the rectangular section bars; secondly, the rectangle section bar is common section bar, and more and the low price of specification makes things convenient for the purchase, and the while direct cutting can obtain different length sub vehicle frame crossbeam 1321 need not the punching press to help reducing the manufacturing cost of second subframe 13.
In order to adjust the wheel base of the chassis structure 100, please refer to fig. 9 and 10, the lower vehicle body 1 includes a front vehicle body 14, a middle vehicle body 15, and a rear vehicle body 16, which are sequentially connected in a front-back direction, the two wheel assemblies are respectively disposed on the front vehicle body 14 and the rear vehicle body 16, in chassis 2 combinations of different specifications, in the front-back direction, the length of the rear vehicle body 16 is set to be different, so that the distance between the two wheel assemblies is set to be different, and in this way, by adjusting the length of the rear vehicle body 16, the distance between the two wheel assemblies is adjusted (as shown by L3 in the figure), so as to adjust the distance between the two wheels, and ensure that the chassis structure 100 can adapt to vehicle models with different wheel bases.
It should be noted that, there are various connection manners of the middle vehicle body 15 and the rear vehicle body 16, the middle vehicle body 15 and the rear vehicle body 16 may be fixedly connected by welding, the middle vehicle body 15 and the rear vehicle body 16 may also be detachably connected by bolts, and the like, and the connection manner of the middle vehicle body 15 and the front vehicle body 14 is also not limited by the present invention, and specifically, the front vehicle body 14 and the rear vehicle body 16 are fixed to the middle vehicle body 15 by welding, so that the whole lower vehicle body 1 is a rigid structure, which is not only convenient for supporting a traveling system and a rotating system of the vehicle chassis 2, but also is helpful for better absorbing collision energy and improving the safety of the vehicle.
Further, the rear body 16 includes two rear body longitudinal beams 161 arranged at intervals in the left-right direction, the rear body longitudinal beams 161 extend in the front-back direction, and the lengths of the corresponding rear body longitudinal beams 161 are set to be different in the chassis 2 combinations of different specifications, so that the lengths of the rear body longitudinal beams 161 are adjusted by replacing the rear body longitudinal beams 161, so as to form the rear bodies 16 of different lengths.
Further, the rear body side member 161 is made of a rectangular section, and the rectangular section or the circular section has high structural strength, and both the rectangular section and the circular section have good torsion resistance, so that the structural strength and the torsion resistance of the auxiliary frame can be effectively improved by using the rectangular section; secondly, the rectangular section is a common section, has more size and specification and low price, is convenient to purchase, and simultaneously, the auxiliary frame cross beam 1321 with different lengths can be obtained by direct cutting without stamping, thereby being beneficial to reducing the manufacturing cost of the rear vehicle body 16.
In order to improve the universality of the chassis structure 100, please refer to fig. 1 and fig. 2, the lower vehicle body 1 includes a front vehicle body 14, a middle vehicle body 15 and a rear vehicle body 16 which are sequentially connected in the front-rear direction, the middle vehicle body 15 is provided with a limit mounting structure, a battery component is mounted and fixed on the limit mounting structure, the front wheel assembly 211 and/or the rear wheel assembly 221 are provided as a driving wheel assembly, correspondingly, the driving wheel assembly includes a driving motor which respectively drives two front wheel structures and/or two rear wheel structures to rotate, the driving motor is electrically connected with the battery component, the arrangement is such that, by arranging the lower vehicle body 1 to mount the chassis 2 and simultaneously by the limit mounting structure to mount the battery component on the middle vehicle body 15, the chassis 2, the battery component and the lower vehicle body 1 are integrated into an independent chassis structure 100, so that the chassis structure 100 can be integrated, which facilitates both the integrated design and the versatility of the chassis components.
Further, referring to fig. 2, the upper end surface of the middle vehicle body 15 is partially recessed to form a mounting groove, and the limiting mounting structure includes the mounting groove, so that the mounting groove is formed to mount the battery assembly in the mounting groove, which is not only beneficial to protecting the battery assembly, but also beneficial to saving the space of the lower vehicle body 1, and improving the space utilization rate of the chassis structure 100.
Further, the chassis structure 100 further includes a plurality of partition plates 5 horizontally disposed at intervals in the mounting groove, and the plurality of partition plates 5 are configured such that the mounting groove forms a plurality of mounting spaces, so that the plurality of partition plates 5 are configured to partition the mounting groove into the plurality of mounting spaces, so that each mounting space separately mounts one unit of battery pack, which helps to protect the battery, and helps to isolate heat transfer, thereby preventing mutual influence.
The plurality of partition plates 5 may be arranged at intervals in the left-right direction, may be arranged at intervals in the front-back direction, may be arranged simultaneously in the left-right direction and the front-back direction, and the like, which is not limited in the present invention.
Further, the baffle 5 with the connected mode of automobile body 1 down has the multiple, baffle 5 with automobile body 1 can be integrated into one piece down, baffle 5 with automobile body 1 also can be through bolted connection down, specifically, in this embodiment, baffle 5 demountable installation in the mounting groove, so set up, adopt detachable construction, make on the one hand automobile body 1 down with baffle 5 is the assembly forming respectively, and for integrated into one piece, fashioned cost is lower, on the other hand so that baffle 5 can be applicable to a plurality of motorcycle types, promotes the commonality of part.
Furthermore, a chute group is concavely arranged on the inner side wall of the mounting groove, the chute group comprises two chutes which are arranged oppositely, the upper ends of the chutes penetrate through the upper end surface of the middle vehicle body 15, wherein the two ends of the partition board 5 are respectively clamped in the two chutes, so that the partition board 5 is inserted into the chutes when the partition board 5 needs to be mounted, the mounting of the partition board 5 can be completed, the partition board 5 is upwards drawn out when the partition board 5 needs to be dismounted, and the mounting and dismounting of the partition board 5 can be rapidly completed through the two chutes.
Further, the sliding groove group is provided with a plurality of sliding groove groups which are arranged at intervals along the horizontal direction, each partition plate 5 selects the sliding groove group arranged at different positions to form different installation spaces, and the partition plates 5 select the sliding groove groups arranged at different positions to adjust the positions of the partition plates 5 so as to adjust the size of the installation spaces, so that the installation spaces can be adapted to battery packs with different specifications.
In order to fix the partition board 5 to the mounting groove, in the present embodiment, the width of the sliding groove is reduced from top to bottom, and the arrangement is such that the partition board 5 forms an interference fit with the sliding groove, thereby clamping and fixing the partition board 5 to the mounting groove.
In order to protect the battery assembly, in an embodiment, the chassis structure 100 further includes a cover plate 6 covering the mounting groove, the cover plate 6 is used to close the mounting groove, so that the mounting groove is closed by the cover plate 6, so that the mounting groove forms a closed space, on one hand, impurities are prevented from falling into the battery assembly, and on the other hand, the battery assembly can be mounted inside the lower vehicle body 1, thereby helping to prevent the battery assembly from being impacted.
In another embodiment, the chassis structure 100 further includes a shock pad disposed in the mounting groove, and the shock pad is disposed to elastically contact the battery assembly with the lower body 1, so as to prevent the battery assembly from being damaged by the lower body 1 due to vibration of the vehicle.
In addition, the present invention further provides an electric vehicle, where the electric vehicle includes the chassis structure 100, and it should be noted that the structure of the chassis structure 100 in the electric vehicle may refer to the embodiment of the chassis structure 100, and details are not repeated herein; since the chassis structure 100 is used in the electric vehicle provided by the present invention, the embodiment of the electric vehicle provided by the present invention includes all technical solutions of all embodiments of the chassis structure 100, and the achieved technical effects are also completely the same, and are not described herein again.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents made by the contents of the present specification and drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. The utility model provides a chassis structure, its characterized in that, includes automobile body and chassis down, the chassis includes front axle subassembly and rear axle subassembly, the front axle subassembly is including locating the front wheel assembly of automobile body down, the front wheel assembly includes two along controlling the preceding wheel structure that sets up to the interval, the rear axle subassembly includes the rear wheel assembly, the rear wheel assembly includes two along controlling the rear wheel structure that sets up to the interval, the chassis structure can form different chassis combinations, wherein:
the distance between the front wheel assembly and the rear wheel assembly is adjustable; and/or the presence of a gas in the atmosphere,
the distance between the two front wheel structures is adjustable; and/or the presence of a gas in the gas,
the distance between the two rear wheel structures is adjustable; and/or the presence of a gas in the atmosphere,
the rear axle assembly can be configured as an independent suspension rear axle assembly or a dependent suspension rear axle assembly, the independent suspension rear axle assembly or the dependent suspension rear axle assembly selected to be coupled to the lower vehicle body.
2. The chassis structure according to claim 1, wherein the lower body includes a lower body and a connecting frame provided to the lower body;
the non-independent suspension rear axle assembly includes:
the rear plate spring assembly is arranged on the connecting frame;
the rear axle structure is arranged on the rear plate spring assembly, extends in the left-right direction, and is arranged at two ends of the rear axle structure;
one end of the first rear shock absorber assembly is arranged on the rear axle structure, and the other end of the first rear shock absorber assembly is connected to the lower vehicle body; and (c) a second step of,
the first rear brake assembly is arranged on the rear wheel assembly.
3. The chassis structure according to claim 2, wherein the lower vehicle body is formed with a first mounting position and a second mounting position which are arranged at an interval, and the first mounting position is located outside the second mounting position, and the link is provided at the first mounting position;
the rear axle structure comprises a rear rigid axle arranged on the rear plate spring assembly, and the first rear shock absorber assembly is connected to the rear rigid axle;
each wheel structure comprises first wheels, and the two first wheels are arranged at two ends of the rear rigid axle.
4. The chassis structure according to claim 2, wherein the lower vehicle body is formed with a first mounting position and a second mounting position which are arranged at an interval, and the first mounting position is located outside the second mounting position, and the link is provided at the second mounting position;
the rear axle structure comprises a rear drive axle arranged on the rear plate spring assembly, and the first rear shock absorber assembly is connected to the rear drive axle;
each wheel structure includes a plurality of second wheels, and two sets of a plurality of the second wheels are located the both ends of rear drive axle.
5. The chassis structure of claim 1, wherein the independent suspension rear axle assembly comprises:
the first auxiliary frame is arranged on the lower vehicle body;
the two lower swing arm assemblies are respectively arranged on two sides of the first auxiliary frame, and the two rear wheel structures are respectively arranged on the two lower swing arm assemblies;
one end of the second rear shock absorber assembly is arranged on the lower swing arm assembly, and the other end of the second rear shock absorber assembly is connected to the lower vehicle body;
one end of the rear spring assembly is arranged on the lower swing arm assembly, and the other end of the rear spring assembly is used for connecting an upper vehicle body;
the two upper swing arm assemblies are arranged between the rear shock absorber and the rear wheel;
two ends of the rear stabilizer bar assembly are respectively arranged on the two lower swing arm assemblies, and the middle part of the rear stabilizer bar assembly is hinged to the auxiliary frame; and the number of the first and second groups,
and the second rear brake assembly is arranged on the rear wheel assembly.
6. The chassis structure according to claim 1, wherein the front wheel assemblies and/or the rear wheel assemblies are provided as wheel assemblies, and the offset distances of the rims in the corresponding wheel assemblies are set to be different in the chassis combinations of different specifications.
7. The chassis structure according to claim 1, wherein the lower body includes a lower body and a second sub-frame provided to the lower body, the second sub-frame having two mounting portions formed thereon at a spacing in a left-right direction;
in the chassis combinations with different specifications, the lengths of the corresponding auxiliary frames are set to be different, so that the distance between the two mounting parts is set to be different;
the front wheel structure and/or the rear wheel structure are/is set to be wheel structures, and the two wheel structures are respectively and correspondingly arranged on the two mounting parts.
8. The chassis structure according to claim 7, wherein the lower body comprises a front body, a middle body and a rear body which are connected in sequence in the front-rear direction, and the two wheel assemblies are respectively arranged on the front body and the rear body;
in the chassis combination of different specifications, the length of the rear vehicle body is set to be different in the front-rear direction, so that the distance between the two wheel assemblies is set to be different.
9. The chassis structure according to claim 1, wherein the lower vehicle body comprises a front vehicle body, a middle vehicle body and a rear vehicle body which are sequentially connected in the front-rear direction, the middle vehicle body is provided with a limiting installation structure, and a battery assembly is fixedly installed on the limiting installation structure;
the front wheel assembly and/or the rear wheel assembly are/is set to be a driving wheel assembly, correspondingly, the driving wheel assembly comprises driving motors which respectively drive the two front wheel structures and/or the two rear wheel structures to rotate, and the driving motors are electrically connected with the battery component.
10. An electric vehicle characterized by comprising the chassis structure according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210285235.4A CN114715275A (en) | 2022-03-22 | 2022-03-22 | Chassis structure and electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210285235.4A CN114715275A (en) | 2022-03-22 | 2022-03-22 | Chassis structure and electric automobile |
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| CN114715275A true CN114715275A (en) | 2022-07-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210285235.4A Pending CN114715275A (en) | 2022-03-22 | 2022-03-22 | Chassis structure and electric automobile |
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