CN211809843U - Auxiliary frame front cross beam and auxiliary frame assembly - Google Patents

Abstract

The utility model provides a sub vehicle frame front beam and sub vehicle frame assembly, the utility model discloses a sub vehicle frame front beam includes the front beam body, be close to on the front beam body in the both ends of front beam body are equipped with preceding suspension installation department respectively, each preceding suspension installation department including link firmly in two preceding suspension installing supports at front beam body top, two preceding suspension installing support mutual disposition to between these two preceding suspension installing supports the recessed notch has been constructed on the front beam body, the both ends of notch extend respectively to two relative disposition preceding suspension installing support department, and in be equipped with the local recessed recess in bottom that constitutes this notch in the notch. Sub vehicle frame front beam through the setting of the recess of the preceding suspension installing support of mutual disposition between and recess, can improve the structural strength of front beam body self to can improve the bearing capacity to power assembly.

Description

Auxiliary frame front cross beam and auxiliary frame assembly

Technical Field

The utility model relates to a vehicle sub vehicle frame technical field, in particular to sub vehicle frame front beam. The utility model discloses still relate to an auxiliary frame assembly who has this auxiliary frame front beam.

Background

Along with the environmental pollution problem that automobile exhaust emission arouses to and the energy shortage problem that the oil reserves are reducing day by day receives people's attention more and more, and electric automobile is receiving people's favor day by day with its characteristics that pollution-free and have better driving experience. In order to rapidly release own electric automobile products, most automobile manufacturers continue to build fuel oil vehicles, and place motors and batteries through adaptive improvement of vehicle bodies on the basis of fuel oil vehicle chassis, so that own electric vehicle types are released in an oil-to-electricity mode.

The electric motor is used as a driving part of an electric automobile, and a suspension arrangement mode, namely a torque shaft type arrangement mode of an engine assembly is generally adopted in an oil-to-electric automobile type. The left and right suspensions are mounted on left and right longitudinal beams of the engine room, and the rear suspension is generally mounted on a front auxiliary frame through a pull rod.

Meanwhile, in the arrangement mode of the torque shaft type power assembly, the torque generated by the power assembly for driving the vehicle is mainly born by the rear suspension, the initial torque provided when the internal combustion engine is started is small, the maximum torque can be output only after the internal combustion engine reaches a certain rotating speed, the torque output of the internal combustion engine is relatively slowly and linearly increased in the process, the impact generated by the torque output is small, and the requirement on the bearing capacity of the rear suspension is not high.

Compared with the traditional internal combustion engine vehicle type, the motor of the electric vehicle has larger starting torque, can output the maximum torque at low speed, can enable the electric vehicle type to have better starting acceleration performance, and nevertheless, has higher requirements on the suspension bearing capacity of the motor. The traditional oil changes the electric motor type because of following the shaft type suspension arrangement scheme of moment of torsion, and the back suspension bearing capacity is limited, is difficult to bear the big moment of torsion of motor for suspension pull rod, suspension body and sub vehicle frame problem that became invalid takes place occasionally. And the beam structure used for front suspension installation in the existing oil-modified electric vehicle also has the problems that the performance indexes such as strength, rigidity and the like are required to be improved, the suspension bearing capacity is limited, and the performance of the motor is limited.

In order to avoid the failure problem and match with the existing front overhang mounting beam structure, the motor is mostly selected to be limited in the prior art, but the performance advantages of quick starting and good acceleration of the electric vehicle are usually sacrificed.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention is directed to a subframe front cross member to improve the bearing capacity of a powertrain, such as a motor.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

the utility model provides an auxiliary frame front beam, includes the front beam body, be close to on the front beam body in the both ends of front beam body are equipped with preceding suspension installation department respectively, each preceding suspension installation department including link firmly in two preceding suspension installing supports at front beam body top, two preceding suspension installing support mutual disposition to between these two preceding suspension installing supports the recessed notch has been constructed on the front beam body, the both ends of notch extend respectively to two mutual disposition preceding suspension installing support department, and in be equipped with the local recessed recess in bottom that constitutes this notch in the notch.

Furthermore, the front cross beam body comprises an upper cross beam plate and a lower cross beam plate which are connected in a buckling mode, the front suspension installation parts are arranged on the upper cross beam plate, and the notches are formed in the upper cross beam plate.

Furthermore, the groove is arranged in the middle of the bottom of the notch, and a through hole penetrating through the upper plate of the cross beam is formed in the groove.

Furthermore, lightening holes and liquid leakage holes are formed in the upper beam plate and the lower beam plate.

Furthermore, on the crossbeam upper plate, the end parts at least close to the two ends of the crossbeam upper plate are respectively provided with the liquid leakage holes.

Further, a lower plate reinforcing rib is constructed on the lower plate of the cross beam corresponding to the position of the front suspension mounting part.

Furthermore, a liquid leakage port formed by the buckling of the beam upper plate and the beam lower plate is arranged on the side part of the front beam body.

Furthermore, a boss-shaped mounting platform is constructed on the front suspension mounting bracket, the mounting platforms on the two front suspension mounting brackets which are oppositely arranged are opposite to each other, and a front suspension mounting hole is formed in each mounting platform.

Furthermore, a reinforcing rib groove is formed in the front suspension mounting bracket below the mounting table.

Compared with the prior art, the utility model discloses following advantage has:

sub vehicle frame front beam, through the notch between two front suspension installing supports of each front suspension installation department mutual disposition to and be located the combination setting of the recess in the notch, can improve the structural strength of front beam body self, thereby can improve the bearing capacity to power assembly.

Meanwhile, the front suspension mounting part in the embodiment adopts the front suspension mounting bracket which is arranged oppositely, the structure is simple, the design and the manufacture are easy, and the cost can be reduced. And the arrangement of the notch and the groove can avoid the front suspension, so that the arrangement of the front suspension can be facilitated.

Furthermore, the utility model discloses the setting of through-hole and each weeping hole in the well recess can do benefit to the electrophoresis of front beam body, also can avoid producing ponding in the use to reduce the corrosion. And the lightweight of front beam body is favorable to in the setting of each lightening hole, and the structural strength of front beam body can further be promoted in the setting of hypoplastron strengthening rib, and the design of mount table and the strengthening rib groove on the front suspension installing support then can guarantee support intensity, the guarantee bears the reliability to the front suspension.

Another object of the utility model is to provide a sub vehicle frame assembly, including the sub vehicle frame, still include with the sub vehicle frame links to each other and divides two longerons of arranging both sides in, connect in two anticollision roof beam between the longeron tip, and be close to in anticollision roof beam connects in two between the longeron as above sub vehicle frame front beam.

The utility model discloses an auxiliary frame assembly adopts as above auxiliary frame front beam, can guarantee the structural strength of front beam, guarantees the bearing capacity to power assembly, and its arrangement of front suspension of also being convenient for, can ensure the bearing reliability to front suspension, and has fine practicality.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

fig. 1 is a schematic structural diagram of an auxiliary frame assembly according to an embodiment of the present invention;

fig. 2 is a schematic view of the subframe assembly according to the embodiment of the present invention when mounted in front and rear suspension;

fig. 3 is a schematic structural diagram of the subframe according to the embodiment of the present invention;

FIG. 4 is a schematic view of the subframe according to the embodiment of the present invention when the rear suspension and the steering and stabilizer bar are installed;

fig. 5 is a side view of the subframe according to the embodiment of the present invention;

fig. 6 is a schematic structural view of the steering gear accommodating groove and the stabilizer bar accommodating groove according to an embodiment of the present invention;

FIG. 7 is a schematic view of FIG. 6 with the steering gear and stabilizer bar installed;

fig. 8 is a schematic structural view of a front cross beam of the subframe according to the embodiment of the present invention;

fig. 9 is a partial schematic view of a front cross member of the subframe according to the embodiment of the present invention;

fig. 10 is a schematic structural view of a beam upper plate according to an embodiment of the present invention;

FIG. 11 is a front view of FIG. 10;

fig. 12 is a schematic structural view of a lower cross beam plate according to an embodiment of the present invention;

FIG. 13 is a front view of FIG. 12;

fig. 14 is a schematic structural view of a front suspension mounting bracket according to an embodiment of the present invention;

fig. 15 is a schematic structural view of the front suspension mounting bracket according to an embodiment of the present invention from another perspective;

fig. 16 is a schematic layout view of a front suspension mounting bracket and front left and right connecting brackets according to an embodiment of the present invention;

fig. 17 is a schematic connection diagram of a front connection bracket and a vehicle body longitudinal beam according to an embodiment of the present invention;

description of reference numerals:

1-subframe, 2-longitudinal beam, 3-subframe front cross beam, 4-collision beam, 5-connecting beam, 6-front body connecting bracket, 7-left front suspension, 8-right front suspension, 9-rear suspension, 10-steering gear, 11-stabilizer bar, 12-body longitudinal beam;

101-subframe cross member, 10101-upper plate, 10102-lower plate, 102-subframe longitudinal member, 103-rear body attachment bracket, 1031-rear attachment pipe, 104-body attachment pipe, 105-rear suspension mount, 106-steering gear mount hole, 107-stabilizer bar mount hole, 108-steering gear receiving groove, 109-stabilizer bar receiving groove, 1010-reinforcing rib, 1011-front end weep hole, 1012-rear end weep hole, 1013-support pipe;

301-beam upper plate, 302-beam lower plate, 303-front suspension mounting bracket, 304-upper plate lightening hole, 305-notch, 306-groove, 307-through hole, 308-end leakage hole, 309-leakage port, 3091-upper notch, 3092-lower notch, 3010-lower plate lightening hole, 3011-lower plate reinforcing rib, 3012-lower plate leakage hole, 3031-mounting table, 3031-front suspension mounting hole, 3033-reinforcing rib groove;

601-front connecting pipe;

1001-steering gear mounting bracket, 1101-stabilizer bar mounting.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

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

While the present embodiment relates to a subframe front cross member, the present embodiment also further relates to a subframe assembly having the subframe front cross member 3, in order to facilitate the description of the structure of the subframe front cross member 3 of the present embodiment and the arrangement thereof in the subframe assembly, the subframe front cross member 3 of the present embodiment will be described in detail in the following description in the course of describing the overall subframe assembly.

Before describing the overall subframe assembly, it should be noted that, for the subframe front cross member 3 of the present embodiment, it is undeniably used in the subframe assembly as described below, but of course, the subframe front cross member 3 may also be used in subframe assemblies having other structural forms, and the present embodiment is not limited thereto. The subframe front cross member 3 of the present embodiment can be provided in the subframe assembly structure, and the expected use effect can be obtained.

In this embodiment, regarding the subframe assembly, the subframe assembly is preferably applied to an electric vehicle using a motor as a power output source, so as to improve the collision performance of the vehicle, and simultaneously, each suspension for loading the motor can have a better bearing effect, so as to reduce the performance requirement on the rear suspension. However, it should be noted that the subframe assembly of the present embodiment is not limited to the electric vehicle type using the motor for power output, and may be applied to a conventional vehicle type using a fuel engine.

As shown in fig. 1, the subframe assembly of the present embodiment includes a subframe 1, and further includes two longitudinal beams 2 connected to the subframe 1 and disposed on both sides, an impact beam 4 connected between ends of the two longitudinal beams 2, and a subframe front cross member 3 connected between the two longitudinal beams 2 near the impact beam 4. Front suspension mounting portions for mounting front suspensions are provided on the subframe front cross member 3 near both ends of the subframe front cross member 3, respectively, and rear suspension mounting portions 105 for mounting rear suspensions are also provided in the middle of the subframe 1 near the front end of the subframe 1.

The present embodiment is directed to the impact beam 4 located at the front end, and it is possible to adopt the impact beam structure commonly used in the existing vehicles, and as a preferred embodiment, both ends of the impact beam 4 are also the end portions detachably connected to the longitudinal beams 2 through the connecting beam 5. At this time, the connection beam 5 may adopt a general beam structure for connecting an impact beam structure in an existing vehicle, or the connection beam 5 may also adopt a beam structure having a superior energy absorbing effect such as an energy absorbing box. And for the detachable connection between tie-beam 5 and longeron 2, it generally adopt the bolt pair structure to connect alright, just so can change anticollision roof beam 4 part alone after the collision to this reduction cost of maintenance.

As shown in fig. 2, for convenience of description, the two front suspensions mounted on the subframe front cross member 3 in the present embodiment are referred to as a left front suspension 7 and a right front suspension 8, respectively, and the rear suspension 9 mounted on the subframe 1. Through two front suspension installation departments on sub vehicle frame front beam 3 to and the setting of the last back suspension installation department of sub vehicle frame 1, still as shown in fig. 2, be triangle-shaped between the three suspension this moment and arrange, and make the motor of installing between each suspension become the centroidal arrangement mode.

Based on the above centroid type arrangement, it should be noted that in the power assembly, that is, the arrangement of the motor, the centroid of the motor should fall within the formed triangular area, and should be as close as possible to the center of the triangular area. Simultaneously, two front suspensions are installed in the top of sub vehicle frame front beam 3, and back suspension 9 is located sub vehicle frame 1's top, and the axis of three suspension also is along Y to, also arrange to the width direction of car, so through suitable setting, alright make the even dead weight that bears the motor of three suspension and the moment of torsion of motor during operation to can reduce the requirement of bearing of back suspension 9 department.

In this embodiment, the subframe 1 has a structure as shown in fig. 3, and includes a subframe body on which the rear suspension mounting portion 105 is provided, and as shown in fig. 4, a steering gear mounting portion and a stabilizer bar mounting portion for mounting the steering gear 10 and the stabilizer bar 11, respectively, are provided. Wherein, the steering gear installation department is two of the part locating two opposite sides of back suspension installation department 105 with the stabilizer bar installation department to the steering gear installation department is close to the front end setting of sub vehicle frame body, and the stabilizer bar installation department is close to the rear end setting of sub vehicle frame body, and back suspension installation department 105 also has the mounting point of arranging at a distance from beginning to end, and the back suspension 9 that from this must make the bearing device crosses steering gear 10 and sets up.

Specifically, the sub-frame body includes sub-frame cross beam 101 that is located the middle part to and the symmetry links firmly in sub-frame longeron 102 of sub-frame cross beam 101 both sides, and rear suspension installation portion 105 is located sub-frame cross beam 101, and the steering gear installation portion and the stabilizer bar installation portion of every side then all are located the sub-frame longeron 102 that corresponds the side. And both ends of each side sub frame longitudinal beam 102 are respectively provided with a rear vehicle body connecting bracket 103 and a vehicle body connecting pipe 104 directly fixedly connected in the sub frame longitudinal beam 102, the bottom of the rear vehicle body connecting bracket 103 is fixedly connected on the sub frame longitudinal beam 102, and the rear vehicle body connecting bracket and a front vehicle body connecting bracket 6 which will be described later together form a vehicle body connecting bracket for connecting the sub frame assembly and the vehicle body longitudinal beam 12.

A rear connecting pipe 1031 is fixedly connected to the top of the rear body connecting bracket 103, and a bolt inserted into the rear connecting pipe 1031 is used to connect to the body side member 12 during the assembly of the entire vehicle. In this embodiment, it should be noted that, in the arrangement of the rear connecting pipe 1031, the rear connecting pipe 1031 may be fixedly connected to the rear connecting bracket 103 by welding, and the upper portion of the rear connecting pipe 1031 is also arranged higher than the rear connecting bracket 103, so that when being connected to the side member 12 of the vehicle body, the rear connecting pipe 1031 can be directly connected to the main body of the side member 12 of the vehicle body by the higher design of the rear connecting pipe 1031, thereby eliminating the trouble of additionally arranging a mounting bracket on the side member 12 of the vehicle body and then connecting to the rear connecting pipe 1031 by the mounting bracket.

In the present embodiment, as well as the arrangement of the rear connecting pipe 1031, the front connecting pipe 601 on the front vehicle body connecting bracket 6 is also arranged with its upper portion higher than the front vehicle body connecting bracket 6. It should be further noted that, by directly connecting the front and rear connecting pipes with the vehicle body longitudinal beam 12, a mounting bracket on the vehicle body longitudinal beam 12 is omitted, so that sudden change of the longitudinal beam cross section caused by the reinforcement of the mounting bracket on the local rigidity of the vehicle body longitudinal beam 12 is avoided, and further, the impact on the collapsing and energy-absorbing effects of the vehicle body longitudinal beam 12 during collision can be avoided.

In the present embodiment, in order to facilitate the arrangement of the rear suspension 9 and the steering gear 10 and the stabilizer bar 11, as shown in fig. 5, the subframe cross member 101 is also provided in a convex-center arch shape as a preferred embodiment. As shown in fig. 6 and 7, each mounting point of the rear suspension mounting portion 105 of the present embodiment includes a rear suspension mounting hole formed in the subframe cross member 101, and a support pipe 1013 embedded in the subframe cross member 101 in correspondence to the rear suspension mounting hole.

Among the mounting points in the rear suspension mounting portion 105 of the present embodiment, the mounting point close to the front end of the sub-frame body is lower than the mounting point close to the rear end of the sub-frame body, and at this time, there is a height difference h between the front and rear mounting points, so as to facilitate the arrangement of the rear suspension 9 and facilitate the molding of the sub-frame cross member 101. In addition, in correspondence with the arch design of the subframe cross member 101 described above, the present embodiment is also configured with a recessed steering gear receiving groove 108 in which the steering gear 10 is arranged on the subframe cross member 101 between the mounting points arranged at the front and rear intervals, and at the same time, similarly to the arrangement of the steering gear receiving groove 108, a recessed stabilizer bar receiving groove 109 is also configured near the rear end of the subframe body, and the stabilizer bar 11 is arranged in the stabilizer bar receiving groove 109.

In this embodiment, the general subframe cross member 101 is made of an upper plate body 10101 and a lower plate body 10102 which are connected by buckling, and at this time, the steering gear receiving groove 108 and the stabilizer bar receiving groove 109 are both formed by sinking the upper plate body 10101. As a preferred embodiment, the lower plate 10102 of the subframe cross member 101 is also convexly disposed at a position corresponding to the steering gear receiving groove 108, and is thereby fixedly connected to the upper plate 10101.

Through the upper and lower plate body's of steering gear holding groove 108 position link firmly, it can improve sub vehicle frame crossbeam 101's structural strength to also can save the trouble of setting up relevant additional strengthening in sub vehicle frame crossbeam 1. In order to enhance the structural strength of the stabilizer bar receiving groove 109, the present embodiment may also include a reinforcing rib 1010 shown in fig. 3 in the stabilizer bar receiving groove 109, wherein the reinforcing rib 1010 is orthogonal to the length direction of the stabilizer bar receiving groove 109 to match with the concave structure of the stabilizer bar receiving groove 109, so as to enhance the structural performance of the position.

For avoiding producing ponding in the steering gear holding tank 108 and the stabilizer bar holding tank 109 of concave structure down, this embodiment also is provided with the weeping hole respectively in these two holding tanks, this moment the weeping hole specifically is including being arranged in the front end weeping hole 1011 in steering gear holding tank 108 promptly to and be arranged in the rear end weeping hole 1012 of stabilizer bar holding tank 109, each weeping hole run through the sub vehicle frame front beam 101 the upper and lower both sides can.

In the present embodiment, the steering gear attachment portion and the stabilizer bar attachment portion are a steering gear attachment hole 106 and a stabilizer bar attachment hole 107, respectively, which are formed in the subframe side member 102. In the specific assembly, the steering gear 10 is fixed to the steering gear mounting hole 106 by the steering gear mounting bracket 1001 on the steering gear 10, and the stabilizer bar 11 is fixed to the stabilizer bar mounting hole 107 by the stabilizer bar mounting base 1101, and both are fixed by the bolt pair structure.

As shown in fig. 8 in combination with fig. 9, the subframe front cross beam 3 of this embodiment includes a front cross beam body, the two front suspension mounting portions are respectively disposed near two ends of the front cross beam body, and structurally, each front suspension mounting portion includes two front suspension mounting brackets 303 fixedly connected to the top of the front cross beam body, the two front suspension mounting brackets 303 in each front suspension mounting portion are arranged oppositely, and the corresponding front suspension is sandwiched between the front suspension mounting brackets 303 on two sides.

In addition, in the present embodiment, a notch 305 is also provided between the two front suspension mounting brackets 303 in each front suspension mounting portion, the notch 305 is provided in a manner of being recessed from the front cross beam body, two ends of the notch 305 extend to the two front suspension mounting brackets 303 arranged opposite to each other, and a groove 306 is further provided in the notch 305 to form a partial recess at the bottom of the notch 305.

In this embodiment, as a preferred embodiment, the front cross member body includes a cross member upper plate 301 and a cross member lower plate 302 which are connected by snap fit, and the cross member upper plate 301 and the cross member lower plate 302 which are connected by snap fit make the cross section of the sub frame front cross member 3 similar to a rectangle. The two front suspension installation parts are arranged on the beam upper plate 301, the notch 305 is also formed in the beam upper plate 301, the whole front beam 3 of the auxiliary frame is fixedly connected to the longitudinal beam 2 through the opening formed by the beam upper plate 301 and the beam lower plate 302 at the two ends of the front beam, at the moment, in order to improve the connection strength, the end parts of the beam upper plate 301 and the beam lower plate 302 can be provided with flanging which is turned outwards, and are connected in a welding mode.

The groove 306 of the present embodiment is preferably disposed centrally at the bottom of the recess 305, and in order to prevent water accumulation, a through hole 307 penetrating the beam upper plate 301 may be provided in the groove 306. In addition, in the present embodiment, in combination with the embodiments shown in fig. 10 to 13, in order to facilitate leakage and from the viewpoint of reducing weight, the beam upper plate 301 and the beam lower plate 301 are further provided with weight reducing holes and leakage holes, respectively.

Specifically, a plurality of upper plate lightening holes 304 are formed in the beam upper plate 301, end leakage holes 308 are respectively formed in the beam upper plate 301 near the two ends, and upper plate leakage holes are also formed in other positions of the beam upper plate 301. A plurality of lower plate lightening holes 3010 and a plurality of lower plate leakage holes 3012 are also formed in the cross beam lower plate 302. In addition, in the present embodiment, a liquid leakage port 309 formed by the engagement of the beam upper plate 301 and the beam lower plate 302 is provided at the side portion of the front beam body. The liquid leakage port 309 is surrounded by an upper notch 3091 formed on the side edge of the beam upper plate 301 and a lower notch 3092 formed on the side edge of the beam lower plate 302.

In this embodiment, lower plate reinforcement 3011 is also formed on lower cross beam plate 302 corresponding to the position of the front suspension mounting portion on upper cross beam plate 301, and this lower plate reinforcement 3011 is formed by recessing lower cross beam plate 302 itself so as to improve the structural strength of the suspension mounting portion on front cross beam 3 of the subframe.

As a preferable exemplary structure of the front suspension mounting bracket 303 configuring the front suspension mounting portion, the present embodiment employs a stamped and formed sheet metal structure for the front suspension mounting bracket 303, and a boss-shaped mounting base 3031 is configured on the front suspension mounting bracket 303. At this time, the mounting stands 3031 on the two front suspension mounting brackets 303 arranged oppositely face each other, and a front suspension mounting hole 3032 is also provided on the mounting stands 3031. Therefore, the front suspension is installed by the bolt pair penetrating through the two front suspension installation holes 3032 which are opposite to each other.

In order to improve the structural strength of the front suspension mounting bracket 303 and to better support the front suspension, the present embodiment also has a bead groove 3033 formed on the front suspension mounting bracket 303 under the mounting base 3031, and the bead groove 3033 is directly formed by the front suspension mounting bracket 303 protruding toward the side opposite to the protruding direction of the mounting base 3031.

In this embodiment, the front suspension mounting brackets 303 of the front suspension mounting portions are directly welded and fixedly connected to the beam upper plate 301. In this embodiment, as shown in fig. 16, the projection of the connection line between the centers of the front suspension mounting holes 3032 in the two front suspension mounting portions on the front beam body coincides with the center line of the front beam body in the width direction. At this time, the width direction of the front cross beam body is also the direction indicated by k in the drawing, and as already mentioned in the embodiment, the front vehicle body connecting brackets 6 are respectively arranged between the subframe front cross beam 3 and the side longitudinal beams 2, the top of each front vehicle body connecting bracket 6 is fixedly connected with a front connecting pipe 601, and the connecting line between the front connecting pipes 601 at the two sides is parallel to the connecting line between the centers of the front suspension mounting holes 3032 and is located in the same vertical plane.

Through the matching arrangement of the connecting line between the front connecting pipes 601 and the connecting line between the centers of the front suspension mounting holes 3032, the excellent arrangement effect of the front cross beam 3 of the auxiliary frame and the front vehicle body connecting supports 6 on the two sides can be realized, and the integral structural performance of the auxiliary frame assembly is further improved.

In regard to the connection between the subframe assembly and the body side member 12 through the body connecting bracket, specifically, the front body connecting bracket 6 is taken as an example, and as shown in fig. 17, in this case, as described above, the front connecting pipe 601 at the top of the body connecting bracket 6 is directly connected with the body side member 12 by using a design that is raised with respect to the front body connecting bracket 6, thereby eliminating the trouble of providing an additional mounting bracket at the bottom of the body side member 12.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The utility model provides a sub vehicle frame front beam, includes the front beam body, its characterized in that: the front beam comprises a front beam body, wherein front suspension installation parts are arranged at two ends of the front beam body close to the front beam body respectively, each front suspension installation part comprises two front suspension installation supports (303) fixedly connected to the top of the front beam body, the two front suspension installation supports (303) are arranged oppositely, a concave notch (305) is formed in the front beam body between the two front suspension installation supports (303), two ends of the notch (305) extend to the two front suspension installation supports (303) arranged oppositely, and a groove (306) which is formed in the bottom of the notch (305) and is locally concave is arranged in the notch (305).

2. The subframe front cross member of claim 1, wherein: the front cross beam body comprises a cross beam upper plate (301) and a cross beam lower plate (302) which are connected in a buckled mode, the front suspension installation parts are arranged on the cross beam upper plate (301), and a notch (305) is formed in the cross beam upper plate (301).

3. The subframe front cross member of claim 2, wherein: the groove (306) is arranged in the middle of the bottom of the notch (305), and a through hole (307) penetrating through the beam upper plate (301) is formed in the groove (306).

4. The subframe front cross member of claim 2, wherein: and lightening holes and leakage holes are formed in the upper beam plate (301) and the lower beam plate (302).

5. The subframe front cross member of claim 4, wherein: and the end parts at least close to the two ends of the beam upper plate (301) are respectively provided with the liquid leakage holes on the beam upper plate (301).

6. The subframe front cross member of claim 2, wherein: lower plate reinforcing ribs (3011) are configured on the cross beam lower plate (302) corresponding to the positions of the front suspension mounting portions.

7. The subframe front cross member of claim 2, wherein: and a liquid leakage port (309) formed by surrounding the upper beam plate (301) and the lower beam plate (302) in a buckling manner is formed in the side part of the front beam body.

8. The subframe front cross member of any one of claims 1 to 7, wherein: a boss-shaped mounting table (3031) is constructed on the front suspension mounting bracket (303), the mounting tables (3031) on the two front suspension mounting brackets (303) which are oppositely arranged are opposite to each other, and a front suspension mounting hole (3032) is formed in the mounting table (3031).

9. The subframe front cross member of claim 8, wherein: and a reinforcing rib groove (3033) is formed on the front suspension mounting bracket (303) below the mounting table (3031).

10. The utility model provides a sub vehicle frame assembly, includes sub vehicle frame (1), its characterized in that: -further comprising two longitudinal beams (2) connected to the sub-frame (1) and disposed on either side, -an impact beam (4) connected between the ends of the two longitudinal beams (2), and-a sub-frame front cross-member (3) connected between the two longitudinal beams (2) close to the impact beam (4).

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