CN118270109A - Auxiliary frame behind new energy vehicle of three-dimensional structure - Google Patents
Auxiliary frame behind new energy vehicle of three-dimensional structure Download PDFInfo
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- CN118270109A CN118270109A CN202211720565.8A CN202211720565A CN118270109A CN 118270109 A CN118270109 A CN 118270109A CN 202211720565 A CN202211720565 A CN 202211720565A CN 118270109 A CN118270109 A CN 118270109A
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- 238000003466 welding Methods 0.000 claims description 25
- 239000002184 metal Substances 0.000 claims description 23
- 230000003014 reinforcing effect Effects 0.000 claims description 19
- 210000000078 claw Anatomy 0.000 claims description 8
- 239000000725 suspension Substances 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000005452 bending Methods 0.000 abstract description 4
- 238000009401 outcrossing Methods 0.000 abstract 1
- 230000007306 turnover Effects 0.000 description 4
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The invention belongs to the field of new energy automobile chassis and rear auxiliary frames, and particularly relates to a three-dimensional structure of a new energy automobile rear auxiliary frame which is used for being installed on a new energy automobile. The high-strength pipe beams are adopted to carry out crossing arrangement up and down on the longitudinal beams, and the cross beam combination mode that the cross beam bending radian section is U-shaped is adopted, so that the weight of the rear auxiliary frame is reduced, the battery arrangement space is increased, and the endurance mileage of the new energy automobile is improved. The combined side frame beams are arranged on two sides of the top of the main beam and the two sides of the top of the main beam, and after the combined top of the combined side frame beams is provided with a pair of combined side frame beams, the included angle of the top tilting bend of the main beam of the combined side frame beams is 30-90 degrees; the beam is connected with the main beam, extends forward to the head end and is provided with an uplink beam, and the tail end is provided with a downlink beam; the combined side frame beam comprises a left side beam frame and a right side beam frame which are matched and lapped with the main beam in a combined mode, the left side beam frame and the right side beam frame are symmetrically arranged, and the combined side frame beam is connected with the left side beam frame and the right side beam frame in a combined mode.
Description
Technical Field
The invention belongs to the field of new energy automobile chassis and rear auxiliary frames, and particularly relates to a three-dimensional structure of a new energy automobile rear auxiliary frame which is used for being installed on a new energy automobile.
Background
The auxiliary frame is a framework of the front axle and the rear axle of the automobile, is an important component part of the chassis of the automobile and plays an important role in connection and bearing. The auxiliary frame can reduce the transmission of road vibration and improve the connection rigidity of the suspension system, so that a driver with the auxiliary frame can feel that the chassis is very solid and the strength of road impact can be dispersed. The rear auxiliary frame is a bearing part of the front axle of the automobile, the top of the rear auxiliary frame is connected with the automobile body and bears the load of the front axle, and the bottom of the rear auxiliary frame is connected with a suspension, wheels, a fixed steering gear and the like and is used for integrating the parts into a sub-assembly to be connected with the automobile body.
The suspension reinforcing plate is fixedly connected with the upper auxiliary frame plate and the lower auxiliary frame plate in a welding mode, the left front swing arm support is fixedly connected with the left front swing arm reinforcing plate in a welding mode, the right front swing arm support is fixedly connected with the right front swing arm reinforcing plate in a welding mode, the left rear auxiliary frame mounting support, the right rear auxiliary frame mounting support, the upper auxiliary frame plate and the lower auxiliary frame plate are in bolt connection, the two sides of the suspension reinforcing plate are respectively connected through three bolts, the left rear swing arm support reinforcing plate is fixedly connected with the upper auxiliary frame plate and the left rear swing arm support in a welding mode, the right rear swing arm support reinforcing plate is fixedly connected with the upper auxiliary frame plate and the right rear swing arm support in a welding mode, and the rear auxiliary frame rear reinforcing plate is fixedly connected with the upper auxiliary frame plate and the lower auxiliary frame plate in a welding mode. As described above, if the prior art adopts the rear auxiliary frame formed by welding metal plates, the weight can be increased, meanwhile, the space occupied by the vehicle body is large, the battery placement of the electric vehicle is affected, and the endurance mileage of the new energy vehicle cannot be expected.
Disclosure of Invention
In order to solve all or part of the problems, the invention aims to provide the rear auxiliary frame of the new energy vehicle with a three-dimensional structure, wherein the adjustable combined side beam frames and the downlink beam structures are arranged on two sides of the top of the main beam, the whole main beam is not a traditional planar H beam like the prior art, but a beam combination form of which the cross beam is arranged by crossing the high-strength pipe beam up and down of the longitudinal beam and the bending radian section of the beam is U-shaped is adopted, the weight of the rear auxiliary frame is reduced, the battery arrangement space is increased, and the endurance mileage of the new energy vehicle is improved.
The invention provides a rear auxiliary frame of a new energy vehicle with a three-dimensional structure, which is used for being installed on the new energy vehicle and comprises the following components: the combined side frame beams are arranged on two sides of the top of the main beam and the two sides of the top of the main beam, and after the combined top of the combined side frame beams is provided with a pair of combined side frame beams, the included angle of the top tilting bend of the main beam of the combined side frame beams is 30-90 degrees; the opening is bent towards the rear to form a main beam opening; the beam is connected with the main beam, extends forward to the head end and is provided with an uplink beam, and the tail end is provided with a downlink beam; the side frame beam comprises a left side beam frame and a right side beam frame which are matched and lapped with the main beam in a lap joint mode, the left side beam frame and the right side beam frame are symmetrically arranged, the side frame beam is combined with the left side beam frame and the right side beam frame, the side frame beam at least comprises an upper transverse supporting beam, a lower transverse supporting beam, an upper transverse supporting beam and a lower transverse supporting beam which are of replaceable combined structures, the main beam comprises a middle beam body and a longitudinal beam connecting plate, the middle beam body is integrally formed by splicing a front beam plate and a rear beam plate, the inside of the middle beam body is in an inverted U-shaped shape, a hollow tubular sheet metal structure is formed after the middle beam body is spliced, a straight beam section and a cross seat section which is arranged in a left-right shaping mode are formed, a welding wide opening is formed in the bottom of the cross seat section, and the welding wide opening is used for bridging the side frame beam, and the longitudinal beam connecting plate is arranged outside the left side turning piece and the right turning piece.
Preferably, the longitudinal beam connecting plate comprises a side connecting bracket and a welded wide-mouth supporting reinforcing plate.
Further, the main beam, the inclined longitudinal beam and the descending cross beam are all steel metal sheet metal parts, and the sections of the sheet metal parts are in a shape of Chinese character 'ri', a shape of Chinese character 'mu', a shape of Chinese character 'tian' or a shape of Chinese character 'kou' after the sheet metal parts are spliced up and down or left and right.
Further, the descending beam comprises a left connecting bracket and a right connecting bracket which are symmetrically arranged on the left side of the combined side frame beam, and the left connecting bracket and the right connecting bracket adopt sheet metal piece assembly welding tubular beam structures.
Further, the front ends of the left connecting support and the right connecting support are provided with a left oblique beam splitting interface and a right oblique beam splitting interface, and the left connecting support and the right connecting support are connected through the oblique beam splitting interfaces and the left connecting support and the right connecting support.
Further, the left side linking bridge and the right side linking bridge set up left bucket and right bucket and constitute, left bucket and right bucket are provided with bucket seam and right bucket installing support and connect, bucket seam pass through right bucket installing support with the crossbeam is connected.
Further, the two ends of the head and the tail of the transverse lower supporting beam, or the left connecting bracket and the right connecting bracket are also provided with reinforcing connecting pieces. The reinforcing connecting piece is used for filling the cavity to reinforce under the state that only the transverse lower supporting beam is directly used for carrying out side beam connection or the left connecting bracket and the right connecting bracket are used for carrying out side beam connection, or is used for further reinforcing the strength in the cavity after the two connecting pieces are used for connecting.
Further, the rear end of the combined side frame beam is provided with a first welding edge, the combined side frame beam is connected with the main body of the rear auxiliary frame through the first welding edge, and the combined side frame beam is arranged in a penetrating mode.
Further, the tail ends of the left connecting support and the right connecting support are provided with a claw support, a front mounting plate is arranged on a main beam at the lower end of the claw support, and a rear suspension sleeve is arranged at the middle position of the main beam.
The invention has the advantages that: the whole is not a traditional H beam like the prior art, but adopts a U-shaped lower body whole girder structure, a pair of combined side girder frames are arranged at the combined top, and the combined side girder frames and the top of the girder are bent to form an arch-shaped spanning structure with included angles, and because all girder bodies are combined sheet metal structures, the upper ends of the combined girder bodies are combined to have the advantages of light weight, good quality and the like of sheet metal structural members, the left and right elastic buffer capacity is sufficient, and the girder has the advantages of a hydraulic pipe, is firm and durable and has sufficient corresponding stress separation performance; meanwhile, the main beam is in a bending opening structure orientation, the pair of beam bodies which are connected with the main beam and extend forwards divide the claw structure and the mounting frame body structure between the sheet metal structure and the collecting part of the main beam, the deformation resistance is further achieved, the welding point position is reduced, the welding line is reduced, the comprehensive cost is lower than that of welding of two stamping plates, the defect that the sheet metal structure is easy to deform when the bending arc-shaped beam body is manufactured in the prior art, the price is relatively high, and the welding quality requirement is high is overcome, the semi-surrounding frame structure of the rear auxiliary frame is formed by three different plane cross beams and two side longitudinal beams, the sufficient strength, the rigidity and the torsion resistance are achieved, meanwhile, the rear auxiliary frame is split into a plurality of assembly parts, each assembly part can be cast or extruded through respective dies, a large and complex forming die is not needed, and the forming difficulty is reduced. On the other hand, the connection mode of the four mounting seats is beneficial to the derivation of the platform products, such as boundary conditions, such as the change of data of the size of the vehicle, and the like, and the size of the rear auxiliary frame can be adaptively changed by adjusting the size data of the cross beam and the longitudinal beam, so that the rear auxiliary frame products meeting the requirements are derived, and the design cost is reduced.
Drawings
FIG. 1 is a side view of the structure;
FIG. 2 is an overall top exploded assembly view;
FIG. 3 is a side view of a composite side frame and an exploded view thereof
FIG. 4 is a bottom view of the overall structure;
FIG. 5 is a perspective view of the overall structure;
Fig. 6 is a schematic view of the overall explosion connection of three cross members and side members.
In the figure: the main beam 1, the combined side beam frame 2, the top tilt bend 3, the main beam opening 4, the ascending beam 5, the descending beam 6, the left side beam frame 7, the right side beam frame 8, the transverse upper branch beam 9a, the transverse lower branch beam 9b, the side connecting bracket 10, and the welded wide-mouth support reinforcing plate 11, the left diagonal beam-dividing interface 12a, and the right diagonal beam-dividing interface 12b, the left connecting bracket 13, and the right connecting bracket 14, the left bucket piece 15, and the right bucket piece 16, the bucket piece seam 17, the right bucket piece mounting bracket 18, the middle beam body 19, and the longitudinal beam connecting plate 20, the reinforcing webs 23, the beam section 24, the span section 25, the welded wide mouth 27, the left turnpiece 28a, and the right turnpiece 28b, the claw bracket 28, the mounting front plate 29, the rear suspension sleeve 30, and the front end arm mounting box 31.
Detailed Description
Embodiments of the technical scheme of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present invention, and thus are merely examples, and are not intended to limit the scope of the present invention.
As shown in fig. 1, a rear subframe of a new energy vehicle with a three-dimensional structure according to the present embodiment is configured to be mounted on a new energy vehicle, and includes: the combined side frame beams 2 are arranged on two sides of the top of the main beam 1 and the combined top of the main beam 1, and after the combined top of the combined side frame beams is provided with a pair of combined side frame beams 2, the included angle of the top inclined bend 3 of the main beam 1 of the combined side frame beams 2 is 30-90 degrees; the opening is bent towards the rear to form a main beam opening 4; the device is connected with the main beam 1, extends forward to the head end, is provided with an uplink beam 5, and is provided with a downlink beam 6 at the tail end; the combined side frame beam 2 comprises a left side beam frame 7 and a right side beam frame 8 which are matched and lapped with the main beam 1, the left side beam frame 7 and the right side beam frame 8 are symmetrically arranged, the combined side frame beam 2 and the left side beam frame 7 and the right side beam frame 8 can be combined and connected, the combined side frame beam 2 at least comprises an upper transverse support beam 9a and a lower transverse support beam 9b, the upper transverse support beam 9a and the lower transverse support beam 9b are of replaceable combined structures, the main beam 1 comprises a middle cross beam body 19 and a longitudinal beam connecting plate 20, the whole middle cross beam body 19 is formed by splicing a front beam plate 19a and a rear beam plate 19b, the inside of the spliced middle cross beam body 19 is of a hollow tubular sheet metal structure, a straight cross beam section 24 is formed after the splicing of the middle cross beam body 19, a spanning seat section 25 which is arranged in a left-right shaping mode is formed, a welding wide opening 27 is arranged at the bottom of the spanning seat section 25, and a left turnover piece 28a and a right turnover piece 28b are used for bridging the combined side frame beam 2, and the left turnover piece 28a and the right turnover piece 28b are arranged outside the connecting plate 20 b.
Preferably, the girder connection plate 20 includes a side connection bracket 10 and a welded wide-mouth support reinforcing plate 11.
Further, the main beam 1, the inclined longitudinal beam 5 and the descending cross beam 6 are all steel metal sheet metal parts, and the sections of the sheet metal parts are all in a shape of Chinese character 'ri', a shape of Chinese character 'mu', a shape of Chinese character 'tian' or a shape of Chinese character 'kou' after the sheet metal parts are spliced up and down or left and right.
Further, the downlink beam 6 includes a left connecting bracket 13 and a right connecting bracket 14 which are symmetrically arranged on the left and right sides of the combined side frame beam 2, and the left connecting bracket 13 and the right connecting bracket 14 are all made of sheet metal plates and are assembled and welded to form a tubular beam structure.
Further, the front ends of the left connecting bracket 13 and the right connecting bracket 14 are provided with a left oblique beam splitting interface 12a and a right oblique beam splitting interface 12b, and the left connecting bracket 13 and the right connecting bracket 14 are connected through the oblique beam splitting interface 11 and the left connecting bracket and the right connecting bracket.
Further, the left connecting bracket 13 and the right connecting bracket 14 are provided with a left bucket 15 and a right bucket 16, the left bucket 15 and the right bucket 16 are provided with bucket seam 17 and a right bucket mounting bracket 18 to be connected, and the bucket seam 17 is connected with the cross beam through the right bucket mounting bracket 18.
Further, the two ends of the transverse lower supporting beam 9a, or the left connecting bracket 13 and the right connecting bracket 14, are also provided with reinforcing connecting pieces 23. The reinforcing strip is used for filling the cavity to reinforce the cavity in a state that only the transverse lower strut beam 9a is directly connected with the side beam or the left connecting bracket 13 and the right connecting bracket 14 are connected with the side beam, or is used for further reinforcing the strength in the cavity after the two are connected.
Further, a first welding edge is arranged at the rear end of the combined side frame beam 2, the combined side frame beam 2 is connected with the main body of the rear auxiliary frame through the first welding edge, and the combined side frame beam 2 is arranged in a penetrating mode.
Further, the left connecting bracket 13 and the right connecting bracket 14 are provided with a claw bracket 28 at the tail ends, a front mounting plate 29 is arranged on the main beam 1 at the lower end of the claw bracket 28, and a rear suspension sleeve 30 is arranged at the middle position of the main beam 1.
Further, front end arm mounting boxes 31 are provided on both sides of the combined side frame beam 2.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention, and are intended to be included within the scope of the appended claims and description. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.
Claims (9)
1. The utility model provides a sub vehicle frame behind new energy vehicle of three-dimensional structure which characterized in that: the combined side frame beam comprises a main beam (1) and combined side frame beams (2) arranged on two sides of the top of the main beam (1), wherein after the combined top of the combined side frame beams is provided with a pair of combined side frame beams (2), the included angle of a top tilting bend (3) of the main beam (1) of the combined side frame beams (2) is 30-90 degrees; the opening is bent towards the rear, and a main beam opening (4) is formed; the device is connected with the main beam (1), extends forward to the head end and is provided with an uplink beam (5), and the tail end is provided with a downlink beam (6); the combined side frame beam (2) comprises a left side beam frame (7) and a right side beam frame (8) which are matched and lapped with the main beam (1), the left side beam frame (7) and the right side beam frame (8) are symmetrically arranged, the combined side frame beam (2) is in combined connection with the left side beam frame (7) and the right side beam frame (8), the combined side frame beam (2) at least comprises a transverse upper support beam (9 a) and a transverse lower support beam (9 b), the transverse upper support beam (9 a) and the transverse lower support beam (9 b) are also of a replaceable combined structure, the main beam (1) comprises a middle cross beam body (19) and a longitudinal beam connecting plate (20), the middle cross beam body (19) is integrally formed by splicing a front beam plate (19 a) and a rear beam plate (19 b), the inside of the spliced middle cross beam body in a reverse U shape is of a hollow tubular sheet metal structure, a straight cross beam section (24) is formed after the spliced middle cross beam body (19) is spliced, a seat crossing section (25) is arranged in a left-right shaping mode of the cross beam section (24), a welding wide opening (27) is formed in the bottom of the seat crossing section (25), a left turning piece (28 a) and a right turning piece (28 b) are arranged in the welding wide opening (27) and are used for being bridged on a combined side frame beam (2), and a connecting longitudinal beam connecting plate (20) is arranged outside the left turning piece (28 a) and the right turning piece (28 b).
2. The rear subframe of the new energy vehicle with the three-dimensional structure according to claim 1, wherein the subframe is characterized in that: the longitudinal beam connecting plate (20) comprises a side connecting bracket (10) and a welding wide-mouth supporting reinforcing plate (11).
3. The rear subframe of the new energy vehicle with the three-dimensional structure according to claim 1, wherein the subframe is characterized in that: the main beam (1), the inclined longitudinal beam (5) and the descending cross beam (6) are steel metal sheet metal parts, and the sections of the sheet metal parts are in a shape of Chinese character 'ri', a shape of Chinese character 'mu' or a shape of Chinese character 'tian' or a shape of Chinese character 'kou' after the sheet metal parts are spliced up and down or left and right.
4. A rear subframe of a new energy vehicle with a three-dimensional structure according to claim 1 or 3, wherein: the descending cross beam (6) comprises a left connecting support (13) and a right connecting support (14) which are symmetrically arranged on the left side of the combined side frame beam (2), and the left connecting support (13) and the right connecting support (14) are all of tubular beam structures formed by splicing and welding sheet metal sheets.
5. The rear subframe of the new energy vehicle with the three-dimensional structure according to claim 4, wherein the subframe is characterized in that: the front ends of the left connecting support (13) and the right connecting support (14) are provided with a left oblique beam splitting interface (12 a) and a right oblique beam splitting interface (12 b), and the left connecting support (13) and the right connecting support (14) are connected through the left connecting support and the right connecting support through the oblique beam splitting interface (11).
6. The rear subframe of the new energy vehicle with the three-dimensional structure according to claim 4, wherein the subframe is characterized in that: left side linking bridge (13) and right side linking bridge (14) set up left bucket piece (15) and right bucket piece (16) and constitute, left bucket piece (15) and right bucket piece (16) are provided with bucket piece seam (17) and right bucket piece installing support (18) and are connected, bucket piece seam (17) pass through right bucket piece installing support (18) with the crossbeam is connected.
7. The rear subframe of the new energy vehicle with the three-dimensional structure according to claim 1, wherein the subframe is characterized in that: the transverse lower supporting beam (9 a) is also provided with a reinforcing connecting piece (23) at the head end and the tail end or at the left connecting bracket (13) and the right connecting bracket (14).
8. The rear subframe of the new energy vehicle with the three-dimensional structure according to claim 1, wherein the subframe is characterized in that: the rear end of the combined side frame beam (2) is provided with a first welding edge, the combined side frame beam (2) is connected with the main body of the rear auxiliary frame through the first welding edge, and the combined side frame beam (2) is arranged in a penetrating mode.
9. The rear subframe of the new energy vehicle with the three-dimensional structure according to claim 4, wherein the subframe is characterized in that: the tail ends of the left connecting support (13) and the right connecting support (14) are provided with a claw support (28), a front mounting plate (29) is arranged on a lower end main beam (1) of the claw support (28), and a rear suspension sleeve (30) is arranged at the middle position of the main beam (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211720565.8A CN118270109A (en) | 2022-12-30 | 2022-12-30 | Auxiliary frame behind new energy vehicle of three-dimensional structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211720565.8A CN118270109A (en) | 2022-12-30 | 2022-12-30 | Auxiliary frame behind new energy vehicle of three-dimensional structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118270109A true CN118270109A (en) | 2024-07-02 |
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ID=91648998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211720565.8A Pending CN118270109A (en) | 2022-12-30 | 2022-12-30 | Auxiliary frame behind new energy vehicle of three-dimensional structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118270109A (en) |
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2022
- 2022-12-30 CN CN202211720565.8A patent/CN118270109A/en active Pending
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