CN211731556U - Front auxiliary frame assembly - Google Patents

Abstract

The utility model provides a front subframe assembly, which comprises longitudinal beams of the subframe on both sides, and a front beam of the subframe and a rear beam of the subframe connected between the longitudinal beams of the two sides of the subframe. And on the longitudinal beams of the subframe on both sides, there are oppositely arranged front body connection parts, middle body connection parts and body rear connection parts; it also includes two powertrain front suspension installation parts arranged oppositely on both sides, and the power assembly rear suspension installation part arranged on the rear beam of the subframe, and each power assembly front suspension installation part is arranged close to the intersection of the front beam of the subframe and the longitudinal beam of the side subframe, and has The front beam installation position and the longitudinal beam installation position are respectively arranged at the front beam of the subframe and the longitudinal beam of the subframe, and the rear suspension installation part of the power assembly is located in the middle of the length direction of the rear beam of the subframe. The front subframe assembly of the utility model utilizes the arrangement of the front suspension mounting part of the power assembly, which can ensure the suspension rigidity of the front subframe, and can reduce the impact on the collision energy absorption performance of the longitudinal beam of the subframe.

Description

Front subframe assembly

technical field

The utility model relates to the technical field of automobiles, in particular to a front subframe assembly suitable for new energy vehicles.

Background technique

In a non-load-bearing body, the front subframe assembly is generally used to connect the front axle control arm, steering gear, stabilizer bar, powertrain suspension, body and other guard plates, wiring harnesses and other structures. The currently used front subframe assembly can be roughly divided into two types: full frame type and Yuanbao beam type, and the front suspension in traditional power vehicles is mostly set on the body, because there is no need to consider the front suspension space layout and suspension Therefore, the requirements for the rigidity and strength of the front subframe are relatively low.

However, for new energy vehicles, the front suspension is generally arranged on the front subframe. Since the subframe needs to consider the starting torque and the stiffness at high frequencies, the rigidity of the suspension arrangement is high, and it is often necessary to sacrifice The impact energy-absorbing effect of the front subframe longitudinal beam may make it difficult to meet the relevant automobile crash standards. At the same time, the existing arrangement of the front suspension on the front subframe on the front beam of the subframe also easily occupies the X-direction space of the engine compartment, which is inconvenient for the arrangement of other components in the engine compartment.

Utility model content

In view of this, the present utility model aims to provide a front subframe assembly, which can ensure the rigidity of the suspension on the front subframe and can reduce the impact on the collision energy absorption performance of the longitudinal beam of the subframe.

In order to achieve the above object, the technical scheme of the present utility model is achieved in this way:

A front sub-frame assembly, comprising sub-frame longitudinal beams arranged opposite to both sides, and a sub-frame connected between the sub-frame longitudinal beams on both sides and close to the front end of the sub-frame longitudinal beam a front cross member, and a rear cross member of the subframe close to the rear end of the longitudinal beam of the subframe relative to the front beam of the subframe, and along the length direction of the longitudinal beam of the subframe, on both sides of the subframe The frame longitudinal beam is provided with a front connecting part of the vehicle body, a middle connecting part of the vehicle body and a rear connecting part of the vehicle body; the front sub-frame assembly also includes:

The power assembly front suspension installation parts are two oppositely arranged on both sides, and the power assembly front suspension installation parts on each side are close to the front cross member of the subframe and the subframe on this side The intersection of the longitudinal beams is arranged, and has a front beam installation position arranged at the front beam of the subframe, and a longitudinal beam installation position arranged at the longitudinal beam of the subframe;

The power assembly rear suspension installation part is arranged on the rear cross beam of the subframe, and the power assembly rear suspension installation part is located in the middle of the length direction of the rear cross beam of the subframe.

Further, the front cross member installation position and the longitudinal beam installation position in each of the power assembly front suspension installation parts are configured to constitute the installed power assembly front suspension along the front sub-frame assembly. assembled to the front subframe assembly in the height direction.

Further, a front suspension bracket extending toward the inner side of the sub-frame longitudinal beam is fixedly connected to the longitudinal beam of one side of the sub-frame, and the longitudinal beam installation position at the longitudinal beam of the side sub-frame is provided. on the front suspension bracket.

Further, the powertrain rear suspension installation portion has a plurality of rear cross member installation positions regularly arranged on the rear cross member of the subframe.

Further, a front mounting position support is fixedly connected to the front end of each of the subframe longitudinal beams, and a middle mounting position support is fixedly connected to the middle of each of the subframe longitudinal beams, and the front of the vehicle body is connected. The body part is arranged on the front mounting position support, the vehicle body middle connecting part is arranged on the middle mounting position support, and the vehicle body rear connecting part is arranged at the end of the rear end of the subframe longitudinal beam.

Further, on the longitudinal beams of the subframe on both sides, there are oppositely arranged stabilizer bar installation positions, large swing arm bushing installation positions and swing arm small bushing installation positions, on the rear cross beam of the subframe. A steering gear installation position is provided, and a battery pack guard plate installation position is arranged on the side of the rear cross beam of the sub-frame facing away from the front cross beam of the sub-frame.

Further, along the length direction of the longitudinal beam of the sub-frame, the installation position of the swing arm large bushing and the installation position of the stabilizer bar are arranged co-linearly, and the installation position of the stabilizer bar is located on the longitudinal beam of the sub-frame The top of the swing arm large bushing installation position has a first large bushing mounting point and a second large bushing mounting point spaced along the length direction of the subframe longitudinal beam; the first large bushing is installed The point is close to the installation position of the stabilizer bar and penetrates through the bottom of the longitudinal beam of the sub-frame, and the second large bushing installation point penetrates the longitudinal beam of the sub-frame up and down.

Further, each of the subframe longitudinal beams is respectively provided with a plurality of crumpling deformation sections arranged along the longitudinal direction of the subframe longitudinal beams, and the crushing deformation sections are located in the subframe longitudinal beams. a front section at the front end, a middle section close to the middle section of the subframe longitudinal beam, and a rear section located at the rear end of the subframe longitudinal beam on the subframe longitudinal beam in the middle section Crushing ribs are provided, and a long deformation guide port is opened on the longitudinal beam of the subframe in the rear section.

Further, an upper part of the front cross member of the sub-frame facing the rear cross member of the sub-frame is formed with a front cross-beam slope inclined outward of the front cross-member of the sub-frame.

Further, the side of the rear cross member of the sub-frame facing the front cross member of the sub-frame is provided with an overhanging kerb entry portion, and the rear cross member of the sub-frame is connected to the kerb entry portion. The top and bottom parts of the subframe are respectively constructed with an upwardly inclined rear beam upper slope and a downwardly inclined rear beam lower slope; The side of the rear crossbeam facing away from the front crossbeam of the sub-frame is provided with a battery pack guard plate connecting part arranged outwardly.

Compared with the prior art, the utility model has the following advantages:

The front sub-frame assembly of the utility model can cooperate with the installed power assembly to improve the overall structural stability by arranging the front and rear suspension installation parts of the power assembly at three points, and utilizes the front suspension installation part of the power assembly. It is close to the intersection of the front beam and the longitudinal beam, and has installation positions on the front beam and the longitudinal beam respectively, so that the rigidity of the suspension can be improved by relying on the higher rigidity of the front beam and the longitudinal beam, and the front subframe can be ensured. Mounting stiffness. At the same time, the front suspension installation part of the power assembly is scattered on the front beam and the longitudinal beam, and the rear suspension installation part of the power assembly is located on the rear beam, so as to avoid the suspension installation on the longitudinal beam to the longitudinal beam structure. In turn, the impact on the impact energy absorption performance of the subframe longitudinal beam can be reduced.

In addition, in the present invention, the assembly of the front suspension of the power assembly along the height direction can be beneficial to reduce the space occupied in the length direction of the whole vehicle and facilitate the assembly. One side of the longitudinal beam installation position is set through the front suspension bracket, which can match the position of the motor in the new energy vehicle cabin and improve the utilization rate of the longitudinal beam material. The rear suspension installation part of the powertrain is composed of a plurality of regularly arranged rear beam installation positions, which can improve the overall rigidity of the subframe while increasing the suspension installation points.

In addition, through the design of the front mounting position support and the middle mounting position support, the present invention can facilitate the setting of the relevant connecting parts, and can also improve the overall rigidity. The two installation points in the installation position of the large axle sleeve of the swing arm have different penetration states, which can facilitate their arrangement. The setting of multiple crush deformation zones on the longitudinal beam can ensure the rigidity of the front suspension and at the same time ensure the auxiliary car. Crash energy absorption performance of the rack. The design of the entrance part of the curb stone and the lower slope of the rear beam can ensure the smooth passing of the curb, and the design of the upper slope of the front beam and the upper slope of the rear beam can make the electric bridge slide up in the event of a collision and reduce the collapse of the longitudinal beam. The design of the connection part of the battery pack guard plate is beneficial to the improvement of the overall lateral stiffness of the subframe.

Description of drawings

The accompanying drawings that constitute a part of the present invention are used to provide further understanding of the present invention, and the schematic embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation of the present invention. In the attached image:

Fig. 1 is the front structure schematic diagram of the front sub-frame assembly described in the embodiment of the present utility model;

2 is a schematic view of the rear structure of FIG. 1;

Fig. 3 is the structural representation of the front mounting position support on the left side in Fig. 1;

Figure 4 is an assembly state diagram of the front and rear powertrain suspensions;

5 is a schematic structural diagram of the installation position of the swing arm large bushing according to the embodiment of the present utility model;

FIG. 6 is a schematic diagram of the arrangement of the collapse deformation interval according to the embodiment of the present utility model;

Fig. 7 is the partial enlarged view of A place in Fig. 6;

8 is a schematic structural diagram of a front cross member of a subframe according to an embodiment of the present utility model;

9 is a schematic structural diagram of a rear cross member of a subframe according to an embodiment of the present utility model;

Description of reference numbers:

1-Subframe longitudinal beam, 2-Subframe front beam, 3-Subframe rear beam, 4-Energy absorption box connecting plate, 5-Front body connection, 6-Front mounting bracket, 7-Front suspension Mounting bracket, 8-Center mounting bracket, 9-Powertrain front suspension mounting part, 10-Powertrain rear suspension mounting part, 11-Battery pack guard plate mounting position, 12-Body middle connection part, 13- Steering gear installation position, 14- stabilizer bar installation position, 15- swing arm large bushing installation position, 16- body rear connection part, 17- swing arm small bushing installation position, 18- powertrain front suspension, 19- Powertrain rear suspension, 20-deformation guide port;

101- upper plate of longitudinal beam, 102- lower plate of longitudinal beam;

201- Front beam upper plate, 202- Front beam lower plate, 203- Front beam slope;

301- Rear beam upper plate, 302- Rear beam lower plate, 303- Curb entry, 304- Rear beam upper slope, 305- Rear beam lower slope, 306- Battery pack guard plate connection, 307- Lifting contact part ;

901-front beam installation position, 902-longitudinal beam installation position;

1001-rear beam installation position;

1501 - the first large bushing mounting point, 1502 - the second largest bushing mounting point.

Detailed ways

It should be noted that the embodiments of the present invention and the features of the embodiments may be combined with each other under the condition of no conflict.

The present utility model will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

This embodiment relates to a front subframe assembly, which is used in a new energy vehicle so as to be able to match the design of the new energy vehicle model, improve the rigidity of the front suspension of the power assembly, meet its rigidity requirements, and at the same time It can meet the requirements of different situations such as various collision conditions and erroneous collision of curbs.

Specifically, as shown in FIGS. 1 and 2 , the front sub-frame assembly of this embodiment includes two sub-frame longitudinal beams 1 arranged opposite to both sides, and connected to the sub-frame longitudinal beams on both sides The front cross member 2 of the subframe near the front end of the subframe longitudinal member 1 between 1, and the rear cross member 3 of the subframe near the rear end of the subframe longitudinal member 1 relative to the front cross member 2 of the subframe, and along the subframe In the longitudinal direction of the longitudinal beam 1 , the longitudinal beams 1 of the subframes on both sides are also provided with the front connecting part 5 of the vehicle body, the connecting part 12 in the vehicle body and the rear connecting part 16 of the vehicle body arranged oppositely.

At the same time, the front sub-frame assembly of this embodiment further includes two power assembly front suspension mounting parts 9 arranged oppositely on both sides, and a power assembly rear beam 3 disposed on the rear cross beam 3 of the sub-frame. Suspended mounting portion 10 . Wherein, the powertrain front suspension mounting portion 9 on each side is arranged near the intersection of the front cross member 2 of the subframe and the longitudinal beam 1 of the side subframe, and is configured to have a front cross member disposed on the front cross member of the subframe. 2 front cross member installation positions 901, and a longitudinal member installation position 902 provided at the subframe longitudinal member 1. The powertrain rear suspension mounting portion 10 is arranged to be located in the middle of the length direction of the rear cross member 3 of the subframe.

In this embodiment, in view of the general design of the motor in the cabin of the new energy vehicle, its position is arranged to the left, so in order to improve the utilization rate of the longitudinal beam material, the subframe on one side, that is, the right side as shown in FIG. 1 , is arranged. The longitudinal beam 1 is fixedly connected with a front suspension bracket 7 extending toward the inner side of the sub-frame longitudinal beam 1 , and the longitudinal beam installation position 902 at the sub-frame longitudinal beam 1 on the side is set on the front suspension bracket 7 . In addition, as shown in FIG. 3 , the above-mentioned front beam mounting position 901 and longitudinal beam mounting position 902 in this embodiment generally use threaded pipes that are fixedly connected. Of course, in addition to threaded pipes, other connecting holes such as connecting holes can also be used. and other installation structures.

The powertrain rear suspension mounting portion 10 located on the rear cross member 3 of the sub-frame in this embodiment has a plurality of rear cross member mounting positions 1001 regularly arranged on the rear cross member 3 of the sub-frame in terms of structure. For example, as shown in FIG. 1 , there may be four rear cross member installation positions 1001 arranged in a square shape, and in design, each rear cross member installation position 1001 may adopt a connection hole arranged through the rear cross member 3 of the subframe. At this time, in order to ensure the structural strength of each rear cross member installation position 1001, of course, corresponding to each connection hole, a support tube is arranged in the rear cross member 3 of the subframe, and the support tube is welded and fixed in the rear cross member 3 of the subframe. Can.

As shown in FIG. 4 , which is the assembled state of the powertrain front mount 18 and the powertrain rear mount 19 on the front subframe, it can be seen that the front mounts in the two powertrain front mounts 9 The setting of the beam installation position 901 and the longitudinal beam installation position 902 makes the installed front suspension 19 of the powertrain assembled to the front subframe assembly along the height direction of the front subframe assembly, that is, the Z direction of the automobile . In this way, the occupation of the cabin space in the longitudinal direction of the entire vehicle can be reduced, and the assembly of each component can be facilitated.

In this embodiment, energy-absorbing box connecting plates 4 are respectively fixed at the front ends of the longitudinal beams 1 of the sub-frames on both sides. Specifically, the energy-absorbing box and the longitudinal beam in the front anti-collision beam assembly can be realized by bolt connection. the connection between. Close to the front end of each subframe longitudinal member 1 , a front mounting position support 6 is also fixedly connected in this embodiment, and a middle mounting position support 8 is also fixedly connected to the middle of each subframe longitudinal member 1 . At this time, the front connecting part 5 of the vehicle body is disposed on the front mounting position support 6, the middle connecting part 12 of the vehicle body is disposed on the middle mounting position support 8, and the rear connecting part 16 of the vehicle body is directly disposed on the longitudinal beam of the subframe 1 the end of the rear end.

The structure of the front mounting position support 6 can be referred to as shown in FIG. 3 , which can be formed by fastening the inner and outer plates together, and the front connecting part 5 of the vehicle body on it can be selected to be fixed to the front mounting bracket. The support tube structure at the top of the support 6. At the same time, it should be pointed out that, on the basis of ensuring the structural performance of the front suspension mounting portion 9 of the powertrain and the front connecting portion 5 of the vehicle body, this embodiment preferably makes the front mounting as the support 6 and the power supply on the same side. The front suspension mounting parts 9 of the assembly are arranged as close as possible to each other, so as to maximize the local size and improve the dynamic rigidity of the front suspension when space allows.

The middle mounting position support 8 is preferably composed of inner and outer panels that are fastened and fastened similarly to the front mounting position support 6, and the middle body connecting portion 12 located thereon is also fixed by welding. The support pipe structure connected to the top of the middle mounting position support 8 is sufficient. As for the rear connecting portion 16 of the vehicle body directly arranged at the end of the subframe longitudinal beam 1 , the support tube structure welded and fixed in the subframe longitudinal beam 1 may also be selected.

In this embodiment, the longitudinal beams 1 of the sub-frames on both sides are also provided with oppositely arranged stabilizer bar installation positions 14, swing arm large axle sleeve installation positions 15 and swing arm small axle sleeve installation positions 17. At the same time, a steering gear mounting position 13 is also provided on the rear cross member 3 of the subframe, and a battery for connecting the battery pack guard is also provided on the side of the rear cross member 3 of the subframe facing away from the front cross member 2 of the subframe. Package guard plate installation position 11.

Wherein, the installation position 14 of the stabilizer bar, the installation position 15 of the large shaft sleeve of the swing arm, and the installation position 17 of the small shaft sleeve of the swing arm may all be the installation hole structure arranged on the longitudinal beam 1 of the sub-frame, and correspond to the installation position of the shaft sleeve of the swing arm. At the same time, a mounting bracket can be added inside the longitudinal beam 1 of the subframe to ensure the stability of the installation of the swing arm bushing.

In addition, in this embodiment, along the length direction of the subframe longitudinal beam 1, the swing arm large bushing installation position 15 and the stabilizer bar installation position 14 are also arranged in a collinear arrangement, and the stabilizer bar installation position 14 is located in the longitudinal direction of the subframe. On the top of the beam 1 , the swing arm large bushing installation position 15 has a first large bushing mounting point 1501 and a second large bushing mounting point 1502 which are arranged at intervals along the longitudinal direction of the subframe longitudinal beam 1 . At this time, as shown in FIG. 5 , the first large bushing installation point 1501 is close to the stabilizer bar installation position 14 , and it only penetrates the bottom of the subframe longitudinal beam 1 , that is, the longitudinal direction of the subframe longitudinal beam 1 . The lower beam plate 102, and the second large bushing installation point 1502 penetrates the longitudinal beam 1 of the subframe up and down, that is, it is provided through the upper longitudinal beam plate 101 and the lower longitudinal beam plate 102 together.

The arrangement of the relative positions between the above stabilizer bar mounting position 14 and the swing arm large bushing mounting position 15 can facilitate the assembly of the stabilizer bar and the swing arm large bushing on the subframe assembly. In addition, in order to improve the collision energy absorption performance of the sub-frame longitudinal beams 1 in the sub-frame assembly, in this embodiment, as shown in FIG. 6 and FIG. 7 , each sub-frame longitudinal beam 1 is also provided with a A plurality of crushing deformation zones arranged along the longitudinal direction of the subframe longitudinal beam 1 .

Among them, in terms of specific design, the crumpling deformation section includes a front section a located at the front end of the subframe longitudinal beam 1 , a middle section b close to the middle of the subframe longitudinal beam 1 , and a rear section located at the rear of the subframe longitudinal beam 1 . The rear section c of the end. The length of each section can be selected according to the overall structural design of the longitudinal beam, the rigidity of the position of the front suspension mounting part 9 of the powertrain, and the design of the crash performance of the entire vehicle. The beam 1 is provided with crush ribs, and a long deformation guide port 22 is formed on the subframe longitudinal beam 1 in the rear section c, so as to ensure the crushing energy absorption effect of the subframe longitudinal beam 1 .

As described above, the longitudinal beam 1 of the sub-frame is formed by the upper plate 101 of the longitudinal beam and the lower plate 102 of the longitudinal beam being fastened and connected, the front beam 2 of the sub-frame and the rear beam 3 of the sub-frame in this embodiment are also the same as Like most cross member structures in existing automobiles, they are composed of two sheet metal pieces connected by a snap fit. 8 and 9 , the front cross member 2 of the subframe is composed of an upper front cross member 201 and a lower front cross member 202 , and the rear cross member 3 of the subframe is composed of an upper rear cross member 301 and a rear cross member. The lower plate 302 is composed.

Combined with the above-mentioned cross-beam structure, in this embodiment, in order to make the power assembly slide up and reduce the impact on the collapse deformation of the sub-frame longitudinal beam 1 in the event of a car collision, the front cross-beam of the sub-frame The upper part of the side facing the rear cross member 3 of the subframe is formed with a front cross member slope 203 inclined to the outside of the front cross member 2 of the subframe, and on a side of the rear cross member 3 of the subframe facing the front cross member 2 of the subframe The upper part of the side is also provided with a rear cross member upper slope 304 which is inclined to the outside of the rear cross member 3 of the subframe. The front beam slope 203 and the rear beam upper slope 304 constitute a guide surface for the power assembly to slide upward.

Further in this embodiment, the side of the rear cross member 3 of the sub-frame facing the front cross member 2 of the sub-frame is further provided with a curb entry portion 303 arranged outwardly, and the upper slope 304 of the rear cross beam is located behind the sub-frame The top part of the cross member 3 connected to the kerb entry portion 303 and the bottom part of the subframe rear cross member 3 connected to the kerb access part 303 are also configured with a rear cross member lower slope 305 inclined backward. In addition, a planar lifting contact portion 307 is also provided at the bottom of the rear cross member 3 of the sub-frame, and an overhanging battery is also provided on the side of the rear cross member 3 of the sub-frame facing away from the front cross member 2 of the sub-frame Shield connection part 306 .

The battery pack guard plate connecting portion 306 and the curb stone entry portion 303 are both plate-shaped, and the two are also formed by extending the rear beam lower plate 302 on the corresponding side outward, and the aforementioned battery pack guard plate installation position 11 is arranged in the The battery pack guard plate connecting portion 306 is generally disposed on the battery pack guard plate mounting position 11 as a mounting hole structure opened on the battery pack guard plate connecting portion 306 . In addition, the angle between the lower slope 305 of the rear beam and the horizontal plane can generally be designed to be between 40° and 60°, while the angle between the slope 203 of the front beam and the upper slope 304 of the rear beam and the horizontal plane can be selected according to the specific situation. .

In this embodiment, through the design of the entry portion 303 of the curb stone, the ground clearance can be used to ensure the passage of the curb, and it is further matched with the setting of the lower slope 305 of the rear crossbeam, which can also support the vehicle to pass under special conditions. , and reduce the damage caused by contact with structures such as curbs. The lifting contact portion 307 is specifically a plane formed at the bottom of the rear cross member 3 of the sub-frame, so as to lift the sub-frame assembly during maintenance. The area occupied by the lifting contact portion 307 depends on the rear of the sub-frame. The overall structure of the beam 3 and the cooperation between the various components can be selected specifically.

By arranging the front and rear suspension installation parts of the power assembly in three points, the sub-frame assembly of this embodiment can cooperate with the installed power assembly to improve the overall structural stability, and the front suspension installation part 9 of the power assembly is used. It is close to the intersection of the front beam 2 of the subframe and the longitudinal beam 1 of the subframe, and has installation positions on the front beam and the longitudinal beam respectively. High rigidity to improve the suspension rigidity, so as to ensure the suspension rigidity on the front subframe. At the same time, combined with the design of the above-mentioned crumpling deformation zones and the front beam slope 203 and the rear beam upper slope 304, etc., the subframe assembly can also be made to meet different safety requirements such as 56FF, MODB, ODB, FP, RCAR, etc. It has good practicability to meet the requirements of collision conditions.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the within the scope of protection of the present invention.

Claims (10)

1. The utility model provides a preceding sub vehicle frame assembly, includes relative arrangement in sub vehicle frame longeron (1) of both sides to and connect in both sides being close to between sub vehicle frame longeron (1) sub vehicle frame front beam (2) of sub vehicle frame longeron (1) front end, and for sub vehicle frame front beam (2) are close to sub vehicle frame rear beam (3) of sub vehicle frame longeron (1) rear end, and follow the length direction of sub vehicle frame longeron (1), in both sides be equipped with relative arrangement's connecting portion (16) behind connecting portion (12) and the automobile body before connecting portion (5) in the automobile body, automobile body on sub vehicle frame longeron (1), its characterized in that: further comprising:

the power assembly front suspension installation parts (9) are oppositely arranged at two sides, the power assembly front suspension installation part (9) at each side is arranged close to the intersection of the auxiliary frame front cross beam (2) and the auxiliary frame longitudinal beam (1) at the side, and is provided with a front cross beam installation position (901) arranged at the auxiliary frame front cross beam (2) and a longitudinal beam installation position (902) arranged at the auxiliary frame longitudinal beam (1);

and the rear suspension mounting part (10) of the power assembly is arranged on the rear cross beam (3) of the auxiliary frame, and the rear suspension mounting part (10) of the power assembly is arranged in the middle of the rear cross beam (3) of the auxiliary frame in the length direction.

2. The front subframe assembly of claim 1 wherein: the front cross beam mounting position (901) and the longitudinal beam mounting position (902) in each powertrain front suspension mounting portion (9) are configured to constitute a mounted powertrain front suspension (18) to be mounted to the front subframe assembly in the height direction of the front subframe assembly.

3. The front subframe assembly of claim 1 wherein: wherein, a front suspension bracket (7) extending towards the inner side of the auxiliary frame longitudinal beam (1) is fixedly connected to the auxiliary frame longitudinal beam (1) at one side, and the longitudinal beam mounting position (902) at the auxiliary frame longitudinal beam (1) at the side is arranged on the front suspension bracket (7).

4. The front subframe assembly of claim 1 wherein: the rear suspension installation part (10) of the power assembly is provided with a plurality of rear cross beam installation positions (1001) which are regularly arranged on the rear cross beam (3) of the auxiliary frame.

5. The front subframe assembly of claim 1 wherein: close to in each the front end of sub vehicle frame longeron (1) links firmly preceding erection site support (6) to in each the middle part of sub vehicle frame longeron (1) has linked firmly well erection site support (8), connecting portion (5) are located before the automobile body on preceding erection site support (6), connecting portion (12) are located in the automobile body on well erection site support (8), connecting portion (16) are located behind the automobile body the tip of sub vehicle frame longeron (1) rear end.

6. The front subframe assembly of claim 1 wherein: the auxiliary frame longitudinal beam comprises an auxiliary frame longitudinal beam (1) and is characterized in that a stabilizer bar mounting position (14), a swing arm large shaft sleeve mounting position (15) and a swing arm small shaft sleeve mounting position (17) which are arranged oppositely are arranged on the auxiliary frame longitudinal beam (1), a steering gear mounting position (13) is arranged on the auxiliary frame rear cross beam (3), and a battery pack protection plate mounting position (11) is arranged on one side, back to the auxiliary frame front cross beam (2), of the auxiliary frame rear cross beam (3).

7. The front subframe assembly of claim 6 wherein: the swing arm large shaft sleeve mounting position (15) and the stabilizer bar mounting position (14) are arranged in a collinear mode along the length direction of the auxiliary frame longitudinal beam (1), the stabilizer bar mounting position (14) is located at the top of the auxiliary frame longitudinal beam (1), and the swing arm large shaft sleeve mounting position (15) is provided with a first large shaft sleeve mounting point (1501) and a second large shaft sleeve mounting point (1502) which are arranged at intervals along the length direction of the auxiliary frame longitudinal beam (1); the first large shaft sleeve mounting point (1501) is close to the stabilizer bar mounting position (14) and penetrates through the bottom of the auxiliary frame longitudinal beam (1), and the second large shaft sleeve mounting point (1502) penetrates through the auxiliary frame longitudinal beam (1) up and down.

8. The front subframe assembly of claim 1 wherein: in each be equipped with a plurality of edges respectively on sub vehicle frame longeron (1) the crumple deformation zone that sub vehicle frame longeron (1) length direction arranged, crumple deformation zone has and is located sub vehicle frame longeron (1) front end anterior interval (a), be close to sub vehicle frame longeron (1) the middle part of the middle part is interval (b), and is located sub vehicle frame longeron (1) rear end rear portion is interval (c), and in middle part interval (b) be equipped with the muscle that crumples on sub vehicle frame longeron (1), in rear portion interval (c) set up rectangular form deformation guide mouth (22) on sub vehicle frame longeron (1).

9. The front subframe assembly of claim 1 wherein: and a front cross beam inclined plane (203) which inclines outwards towards the auxiliary frame front cross beam (2) is formed on the upper part of one side, right opposite to the auxiliary frame rear cross beam (3), of the auxiliary frame front cross beam (2).

10. The front subframe assembly of any one of claims 1-9 wherein: a curb entering part (303) which extends outwards is arranged on one side, right opposite to the front cross beam (2), of the auxiliary frame rear cross beam (3), and an upwards inclined rear cross beam upper inclined plane (304) and a downwards inclined rear cross beam lower inclined plane (305) are respectively formed at the top part and the bottom part of the auxiliary frame rear cross beam (3) which is connected with the curb entering part (303); and a planar lifting contact part (307) is arranged at the bottom of the auxiliary frame rear cross beam (3), and a battery pack protection plate connecting part (306) which extends outwards is arranged at one side of the auxiliary frame rear cross beam (3) back to the auxiliary frame front cross beam (2).

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