CN118270113A - Auxiliary frame behind integrative new forms of energy car of high-volume high-mode low pressure vacuum - Google Patents
Auxiliary frame behind integrative new forms of energy car of high-volume high-mode low pressure vacuum Download PDFInfo
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- CN118270113A CN118270113A CN202211702156.5A CN202211702156A CN118270113A CN 118270113 A CN118270113 A CN 118270113A CN 202211702156 A CN202211702156 A CN 202211702156A CN 118270113 A CN118270113 A CN 118270113A
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- cross beam
- shaping
- plate body
- connecting arm
- seat
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- 238000005266 casting Methods 0.000 claims abstract description 42
- 238000009434 installation Methods 0.000 claims abstract description 28
- 238000007493 shaping process Methods 0.000 claims abstract description 28
- 238000000034 method Methods 0.000 claims abstract description 5
- 230000003014 reinforcing effect Effects 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 6
- 238000000465 moulding Methods 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 3
- 239000000725 suspension Substances 0.000 description 9
- 239000003381 stabilizer Substances 0.000 description 8
- 230000009467 reduction Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000003562 lightweight material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Classifications
-
- 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
- B62D21/11—Understructures, i.e. chassis frame on which a vehicle body may be mounted with resilient means for suspension, e.g. of wheels or engine; sub-frames for mounting engine or suspensions
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Body Structure For Vehicles (AREA)
Abstract
The invention relates to the technical field of manufacturing and production of automobiles and auxiliary frames, in particular to a large-volume high-mode low-pressure vacuum integrated new energy automobile rear auxiliary frame. The integrated molding can save the cost brought in the splicing molding process and improve the product precision; the hollow maximum body structure can obtain a high mode; the weight is relatively light, no middle sand core shaping and core pulling structure is adopted, the upper/lower direct molding structure of the die is optimized, and the rejection rate of the sand core die is reduced. The device comprises an upper cross beam, a lower cross beam and side longitudinal beams, wherein the upper cross beam, the lower cross beam and the side longitudinal beams are hollow castings; wherein: shaping oblique beam bodies at the head and tail ends of the upper cross beam, and integrally shaping front sections of the oblique beam bodies to form front beam complete sets of seats for independently bearing front side stress weight; an upper layer longitudinal beam body is arranged above the side longitudinal beam in a stacking and shaping manner, and a front casting connecting rod seat and a rear casting connecting rod seat are arranged on the upper layer longitudinal beam body; and the front casting connecting rod seat and the rear casting connecting rod seat are connected with a left connecting arm installation seat rod and a right connecting arm installation seat rod, the two ends of which extend outwards.
Description
Technical Field
The invention relates to the technical field of manufacturing and production of automobiles and auxiliary frames, in particular to a large-volume high-mode low-pressure vacuum integrated new energy automobile rear auxiliary frame.
Background
The rear auxiliary frame is a main structural support piece of a front automobile body on an automobile, a rear axle and a rear suspension of the automobile are connected with the automobile body through the rear axle, front triangular swing arms, front transverse stabilizing rods, steering gears and other parts are arranged on the rear auxiliary frame and completely serve the engine, the main function of the rear auxiliary frame is to provide a modular integrated platform for assembling the parts, after new technology innovation enters the new energy automobile age, the light weight of the rear auxiliary frame has become a great trend, the rear auxiliary frame is one of the most important ways of energy conservation, emission reduction, consumption reduction and range increase of the traditional fuel automobile, an automobile chassis structural member replaces the traditional steel materials with light weight materials such as aluminum alloy and the like, the weight reduction of 30-50%, the oil consumption of the whole automobile is reduced by 7-13%, and the emission reduction of 4-6%, and the rear auxiliary frame becomes a necessary choice for the design updating and updating of automobile parts. The auxiliary frame is the most important safety structural part in the automobile chassis system, is divided into a front auxiliary frame and a rear auxiliary frame, is mainly used for supporting an automobile body and connecting the whole chassis suspension system, bears complex load, and is provided with an automobile body mounting point bracket, a motor assembly (suspension) mounting point bracket, a connecting bracket of a stabilizing rod, a control arm mounting bracket, a steering gear mounting bracket and the like. However, the prior art has the problems that the cost of the shaping process is too high, the product precision is low and the quality reject ratio is high on the large-volume auxiliary frame.
Disclosure of Invention
In order to solve the problems in the prior art, the rear auxiliary frame of the large-volume high-mode low-pressure vacuum integrated new energy vehicle is provided, the cost brought in the splicing and shaping process can be saved by integrated shaping, and the product precision is improved; the hollow maximum body structure can obtain a high mode; the weight is relatively light, no middle sand core shaping and core pulling structure is adopted, the upper/lower direct molding structure of the die is optimized, and the rejection rate of the sand core die is reduced.
The invention solves the technical problems by adopting the technical scheme that: the technical scheme adopted for solving the technical problems is as follows: a rear auxiliary frame of a large-volume high-mode low-pressure vacuum integrated new energy vehicle comprises an upper cross beam, a lower cross beam and side longitudinal beams, wherein the upper cross beam, the lower cross beam and the side longitudinal beams are hollow castings and are cast into a rectangular frame-shaped rear auxiliary frame structure; wherein: shaping oblique beam bodies at the head and tail ends of the upper cross beam, and integrally shaping front sections of the oblique beam bodies to form front beam complete sets for independently bearing front side stress weight, wherein the stresses are independently differentiated; an upper layer longitudinal beam body is arranged above the side longitudinal beam in a stacking and shaping manner, and a front casting connecting rod seat and a rear casting connecting rod seat are arranged on the upper layer longitudinal beam body; the front casting connecting rod seat and the rear casting connecting rod seat are connected with a left connecting arm installation seat rod and a right connecting arm installation seat rod, the two ends of which extend outwards;
The beam arc slope is formed by arc shaping of the inner side of the upper longitudinal beam, the front end of the beam arc slope is shaped to form a front three-dimensional structure, the rear end of the beam arc slope is provided with a rear arch abutment beam with a Z section recessed inwards from the outer side, a lower beam rear slope piece which extends from the lower side of the lower cross beam and is used for reinforcing the bottom weight of the rear side of the bottom of the engine is arranged between the rear arch abutment beam on the left side and the rear arch abutment beam on the right side, the lower beam rear slope piece improves the rigidity of the steering gear installation part in the vertical direction and facilitates the splicing shaping operation of the first beam plate body, the steering gear installation part extends obliquely upwards at the end parts of the left connecting arm installation seat and the right connecting arm installation seat, and the end face of the first beam plate body gradually inclines outwards from the bottom to the side close to the steering gear installation part. In order to reduce casting difficulty and improve casting performance, the third beam plate body is outwards extended and sleeved on the outer side of the upper cross beam, and the wall thickness of the third beam plate body is uniform and matched with the cross section shape of the upper cross beam.
In order to enable the upper cross beam, the lower cross beam and the side longitudinal beams to collapse and absorb energy during collision, at least one reinforcing rib is arranged on the surfaces of the upper cross beam, the lower cross beam and the side longitudinal beams along the axial direction. The reinforcing ribs of the embodiment are in a grid shape, and the arrangement mode and the number of the reinforcing ribs can be set according to requirements. The left connecting arm installation seat and the right connecting arm installation seat are provided with steering gear installation parts in an extending mode, the lower portion of each steering gear installation part is provided with a corresponding first beam plate body, the end face of the first beam plate body is gradually inclined outwards from the bottom to the side close to the steering gear installation parts, the inclined beam body further improves the rigidity of the stabilizer bar installation position and is convenient to cast, the first rigidity of the stabilizer bar installation position is improved, two groups of installation holes for installing the stabilizer bar are symmetrically arranged on the lower cross beam in a bilateral symmetry mode, and the first reinforcing ribs are connected between each group of installation holes in the cavity of the lower cross beam and are symmetrically arranged. To further improve the rigidity of the stabilizer bar mounting position and to facilitate casting.
Preferably, in order to improve the strength and rigidity of the rear casting, a reinforcing beam is arranged between the left connecting arm mounting seat and the right connecting arm mounting seat, and a reinforcing longitudinal beam is arranged between the reinforcing beam and the beam main body.
Preferably, the upper cross beam and the lower cross beam are provided with beam plate bodies for inserting the end parts of the sectional materials, and the beam plate bodies are connected with the sectional materials in a splicing and shaping mode.
Preferably, the beam plate body comprises a first beam plate body positioned on the left connecting arm mounting seat and the right connecting arm mounting seat; the second beam plate body is positioned on the beam plate body and the front casting and is respectively matched with the left section bar and the right section bar; and the third beam plate body is positioned on the beam plate body and the front casting and is used for being matched with the upper cross beam. In order to reduce casting difficulty and improve casting performance, the third beam plate body is outwards extended and sleeved on the outer side of the upper cross beam, and the wall thickness of the third beam plate body is uniform and matched with the cross section shape of the upper cross beam.
In order to be able to install the motor on the auxiliary frame in a matched manner according to the requirement, a boss for splicing the shaping suspension mounting frame is arranged on the beam of the lower beam. The boss is provided with four bosses, each two bosses are in one group, and each group can be spliced and molded to form one suspension mounting frame; the auxiliary frame can be spliced and molded or not spliced and molded to form the suspension mounting frame according to the requirement.
The weight of the rear auxiliary frame is relatively light, 34.3kg of the previous generation is 31.5kg, the weight is reduced by 2.8kg, and the weight is reduced by 8.2%.
Compared with the prior art, the invention has the advantages that: the auxiliary frame is formed by combining three different plane frame structures integrally, so that the number of parts is small, and the process is simple; the castings are hollow, so that the weight is further reduced; in addition, the main mounting points and the mounting surfaces of the invention are all formed by post machining, and the machining precision is higher, thus obtaining good dimensional precision; the integrated molding can save the cost brought in the splicing molding process and improve the product precision; the hollow maximum body structure can obtain a high mode; the weight is relatively light, no middle sand core shaping and core pulling structure is adopted, the upper/lower direct molding structure of the die is optimized, and the rejection rate of the sand core die is reduced.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic view of the three-dimensional overall structure of the present invention;
FIG. 3 is a schematic side view of the present invention;
FIG. 4 is a bottom partial view of the present invention;
FIG. 5 is a front perspective view of the present invention;
FIG. 6 is a front view of the present invention;
fig. 7 is a rear view of the present invention.
Detailed Description
Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the application.
In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.
Furthermore, the terms "front," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "front", "second" may include one or more such features, either explicitly or implicitly. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
The following describes in further detail the embodiments of the present invention with reference to the drawings and examples.
As shown in fig. 1 to 6, the rear auxiliary frame of the large-volume high-mode low-pressure vacuum integrated new energy vehicle comprises an upper cross beam 1, a lower cross beam 2 and a side longitudinal beam 3, wherein the three parts are hollow castings and are cast into a rectangular frame-shaped rear auxiliary frame structure; wherein: shaping the oblique beam body 4 at the head and tail ends of the upper beam 1, and integrally shaping the front section of the oblique beam body 4 to form a front beam complete seat 5 for independently bearing the front side stress weight, wherein the stress is independently differentiated; an upper layer longitudinal beam body 6 is arranged above the side longitudinal beam 3 in a stacking and shaping way, the upper layer longitudinal beam body 6 can be provided with a front casting connecting rod seat 7 and a rear casting connecting rod seat 8, and an upper layered structure and a lower layered structure are formed after differentiation;
The beam arc slope 9 is arranged on the inner side of the upper layer longitudinal beam body 6 in an arc shape, the front end of the beam arc slope 9 is shaped to form a front three-dimensional structure 10, the rear end of the beam arc slope 9 is provided with a rear arch abutment beam 11 with a Z section which is concave inwards from the outer side, a lower beam rear slope piece 12 which extends from the lower side of the lower cross beam 2 and is used for strengthening the bottom weight of the rear side of the bottom-covered engine is arranged between the rear arch abutment beam 11 on the left side and the rear arch abutment beam 11 on the right side, the lower beam rear slope piece 12 improves the rigidity of the steering gear installation part 13 in the vertical direction and facilitates the splicing shaping operation of the first beam plate body 14, the steering gear installation part 17 extends obliquely upwards at the end parts of the left connecting arm installation seat 12 and the right connecting arm installation seat 13, the end surface of the first beam plate body 16 gradually inclines outwards from the bottom to the side close to the steering gear installation part 17. In order to reduce casting difficulty and improve casting performance, the third beam plate body 15 is sleeved outside the upper beam 1 in an outward extending manner, and the wall thickness of the third beam plate body 15 is uniform and matched with the cross section shape of the upper beam 1.
In order to enable the upper cross beam 1, the lower cross beam 2 and the side longitudinal beams 3 to collapse and absorb energy during collision, at least one reinforcing rib is arranged on the surfaces of the upper cross beam 1, the lower cross beam 2 and the side longitudinal beams 3 along the axial direction. The reinforcing ribs of the embodiment are in a grid shape, and the arrangement mode and the number of the reinforcing ribs can be set according to requirements. The left connecting arm mounting seat 15 and the right connecting arm mounting seat end 16 extend obliquely upwards to form steering gear mounting portions 17, the corresponding first beam plate bodies 14 are arranged below each steering gear mounting portion, the end faces of the first beam plate bodies 14 are gradually inclined outwards from the bottom to the side close to the steering gear mounting portions 17, the inclined beam bodies 4 further improve the rigidity of the stabilizer bar mounting positions and are convenient to cast, the first step is used for improving the rigidity of the stabilizer bar mounting positions, two groups of mounting holes 18 for mounting stabilizer bars are symmetrically arranged on the lower cross beam 2 left and right, the first reinforcing ribs 22 are connected between the two groups of mounting holes 18 in the cavity of the lower cross beam 2, and the reinforcing ribs are symmetrically arranged. To further improve the rigidity of the stabilizer bar mounting position and to facilitate casting.
Preferably, in order to improve the strength and rigidity of the rear casting, the upper beam 1 is provided with a reinforcing beam between the left connecting arm mounting seat and the right connecting arm mounting seat, and a reinforcing longitudinal beam is provided between the reinforcing beam and the beam main body.
Preferably, in order to improve the connection strength between the cast profiles, the upper beam 1 and the lower beam 2 are provided with beam plate bodies 18 for inserting the end parts of the profiles, and the beam plate bodies are connected with the profiles in a splicing and shaping manner.
Preferably, the beam plate body comprises a first beam plate body 14 positioned on the left connecting arm mounting seat 15 and the right connecting arm mounting seat 16; the second beam plate body is positioned on the beam plate body 18 and the front casting and is respectively matched with the left section bar and the right section bar; and a third beam plate 19 which is positioned on the beam plate 18 and the front casting and is used for being matched with the upper beam 1. In order to reduce the casting difficulty and improve the casting performance, the third beam plate body is outwards extended and sleeved on the outer side of the upper beam 1, and the wall thickness of the third beam plate body is uniform and matched with the cross section shape of the upper beam 1.
The castings and the sectional materials are connected through splicing and shaping; in order to improve the connection strength between the casting and the section bar, the casting is provided with beam plate bodies for inserting the end parts of the section bar, and the beam plate bodies are connected with the section bar in a splicing and shaping mode. The beam plate body comprises a first beam plate body 16 positioned on the left connecting arm mounting seat 12 and the right connecting arm mounting seat 13; the second beam plate body 7 is positioned on the first front casting 2 and the front casting 3 and is respectively matched with the left section bar 4 and the right section bar 5; and a third beam plate 15 which is positioned on the first front casting 2 and the front casting 3 and is used for being matched with the upper beam 1. The longitudinal beams of the upper and lower layered structures are differentiated to form a large-volume three-dimensional layered structure, the longitudinal beams transversely share the weight of the engine and the steering rod, the left longitudinal beam and the right longitudinal beam of the stress can collapse and absorb energy during collision, and the top surfaces of the tail ends of the left longitudinal beam and the right longitudinal beam are respectively provided with at least one backward concave complete shaft body seat 20 along the axial direction.
In order to be able to fit motors on the subframe as required, a projection 19 for splicing the shaped suspension mount is provided on the cross member of the lower cross member 2. The number of the bosses 19 is four, each two are in one group, and each group can splice and shape one suspension mounting frame; the auxiliary frame can be spliced and molded or not spliced and molded to form the suspension mounting frame according to the requirement.
The weight of the auxiliary frame is relatively light, 34.3kg of the previous generation is 31.5kg, the weight is reduced by 2.8kg, and the weight is reduced by 8.2%.
The invention has been described above by way of example with reference to the accompanying drawings, it is obvious that the implementation of the invention is not limited by the above manner, and it is within the scope of the invention to apply the inventive concept and technical solution to other occasions as long as various improvements made by the inventive method concept and technical solution are adopted or without any improvement.
Claims (4)
1. A rear auxiliary frame of a large-volume high-mode low-pressure vacuum integrated new energy vehicle comprises an upper cross beam, a lower cross beam and side longitudinal beams, wherein the upper cross beam, the lower cross beam and the side longitudinal beams are hollow castings and are cast into a rectangular frame-shaped rear auxiliary frame structure; the method is characterized in that: shaping oblique beam bodies at the head and tail ends of the upper cross beam, and integrally shaping front sections of the oblique beam bodies to form front beam complete sets for independently bearing front side stress weight, wherein the stresses are independently differentiated; an upper layer longitudinal beam body is arranged above the side longitudinal beam in a stacking and shaping manner, and a front casting connecting rod seat and a rear casting connecting rod seat are arranged on the upper layer longitudinal beam body; the beam arc slope is formed by arc shaping of the inner side of the upper longitudinal beam, the front end of the beam arc slope is shaped to form a front three-dimensional structure, the rear end of the beam arc slope is a rear arch abutment beam with a Z section recessed inwards from the outer side, a lower beam rear slope piece which extends from the lower part of the lower cross beam and is used for reinforcing the bottom weight of the rear side of the bottom of the engine is arranged between the rear arch abutment beam on the left side and the rear arch abutment beam on the right side, the steering gear installation parts extend obliquely upwards at the end parts of the left connecting arm installation seat and the right connecting arm installation seat, the corresponding first beam plate body is arranged below each steering gear installation part, and the end face of the first beam plate body gradually inclines outwards from the bottom to one side close to the steering gear installation part.
2. The rear subframe of the large-volume high-mode low-pressure vacuum integrated new energy vehicle as claimed in claim 1, wherein the rear subframe is characterized in that: and a reinforcing cross beam is arranged between the left connecting arm mounting seat and the right connecting arm mounting seat, and a reinforcing longitudinal beam is arranged between the reinforcing cross beam and the cross beam main body.
3. The rear subframe of the large-volume high-mode low-pressure vacuum integrated new energy vehicle as claimed in claim 1, wherein the rear subframe is characterized in that: the upper cross beam and the lower cross beam are provided with beam plate bodies for inserting the end parts of the sectional materials, and the beam plate bodies are connected with the sectional materials in a splicing and shaping mode.
4. The rear subframe of a large-volume high-mode low-pressure vacuum integrated new energy vehicle according to claim 3, wherein the rear subframe is characterized in that: the beam plate body comprises a first beam plate body positioned on the left connecting arm mounting seat and the right connecting arm mounting seat; the second beam plate body is positioned on the beam plate body and the front casting and is respectively matched with the left section bar and the right section bar; and the third beam plate body is positioned on the beam plate body and the front casting and is used for being matched with the upper cross beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211702156.5A CN118270113A (en) | 2022-12-29 | 2022-12-29 | Auxiliary frame behind integrative new forms of energy car of high-volume high-mode low pressure vacuum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211702156.5A CN118270113A (en) | 2022-12-29 | 2022-12-29 | Auxiliary frame behind integrative new forms of energy car of high-volume high-mode low pressure vacuum |
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| Publication Number | Publication Date |
|---|---|
| CN118270113A true CN118270113A (en) | 2024-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211702156.5A Pending CN118270113A (en) | 2022-12-29 | 2022-12-29 | Auxiliary frame behind integrative new forms of energy car of high-volume high-mode low pressure vacuum |
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| Country | Link |
|---|---|
| CN (1) | CN118270113A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119283969A (en) * | 2024-09-13 | 2025-01-10 | 浙江海创有色金属有限公司 | Integrated rear subframe and casting method thereof |
-
2022
- 2022-12-29 CN CN202211702156.5A patent/CN118270113A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119283969A (en) * | 2024-09-13 | 2025-01-10 | 浙江海创有色金属有限公司 | Integrated rear subframe and casting method thereof |
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