CN220220895U - Sub vehicle frame assembly and vehicle - Google Patents

Abstract

The utility model discloses a subframe assembly and a vehicle, wherein the subframe assembly comprises: longitudinal beams are arranged at intervals in the transverse direction; the crossbeam, the crossbeam includes: the beam body is connected between the longitudinal beams, a first cavity is formed in the beam body, the first reinforcing plate is located in the first cavity, and the first reinforcing plate and the beam body jointly define a second cavity. Therefore, the strength and rigidity of the beam position can be enhanced, and the energy transmitted by the driving force assembly excitation and the tire excitation vibration can be effectively attenuated, so that the vibration and noise in the vehicle can be reduced.

Description

Sub vehicle frame assembly and vehicle

Technical Field

The utility model relates to the technical field of vehicles, in particular to a subframe assembly and a vehicle.

Background

At present, the auxiliary frame assembly is excited by the power assembly and the tire, the strength of the rear suspension mounting position at the front auxiliary frame beam is weaker, the integral strength of the front auxiliary frame beam is mainly reflected, the structure is weaker, the vibration and noise of the whole vehicle are caused by directly influencing the excitation of the power assembly and the transmission of the tire excitation to the vehicle body, and the comfort of the whole vehicle is influenced.

In addition, the longitudinal beam is of an integrated structure, so that post-welding machining equipment cannot be arranged at the installation position of the longitudinal beam and the swing arm, machining cannot be performed on the installation position of the swing arm, further, the position accuracy of the installation point of the swing arm is relatively poor, the strength of the installation position of the swing arm is also weak, and the four-wheel line passing rate and the stability performance of a vehicle are affected.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, an object of the present utility model is to provide a subframe assembly which can strengthen the strength and rigidity of the beam position, and can effectively attenuate the power assembly excitation and tire excitation vibration transmission energy, thereby reducing the vibration and noise in the vehicle.

The utility model further proposes a vehicle.

An embodiment of a subframe assembly according to a first aspect of the present utility model comprises: the longitudinal beams are arranged at intervals in the transverse direction; a cross beam, the cross beam comprising: the beam body is connected between the longitudinal beams, a first cavity is formed in the beam body, the first reinforcing plate is located in the first cavity, and the first reinforcing plate and the beam body jointly define a second cavity.

Therefore, the first cavity and the second cavity in the beam body form a double-layer box-shaped structure, the strength and the rigidity of the beam position can be enhanced, and the vibration transmission energy of the power assembly excitation and the tire excitation can be effectively attenuated, so that the vibration and the noise in the vehicle can be reduced.

According to some embodiments of the utility model, the beam body comprises: the beam upper plate is arranged above the beam lower plate and forms a first cavity together with the beam lower plate, and the first reinforcing plate and the beam lower plate define a second cavity together.

According to some embodiments of the utility model, the first stiffener includes: the side plate is connected to one side of the reinforcing main plate and is fixedly connected with the beam lower plate, the reinforcing main plate is respectively fixedly connected with the beam upper plate and the beam lower plate, the reinforcing main plate, the side plate and the beam lower plate jointly define the second cavity, and the top of the reinforcing main plate and the top of the beam upper plate are arranged at intervals in the up-down direction.

According to some embodiments of the utility model, an avoidance recess is formed in the front upper portion of the beam upper plate, the avoidance recess is used for avoiding the power assembly, and the first reinforcing plate is fixedly connected with the bottom of the avoidance recess; and/or the two side edges of the lower plate of the cross beam are provided with lap joint parts, the front sides of the lap joint parts extend forwards to form extension parts, and the lap joint parts and the extension parts are fixedly connected with the longitudinal beams.

According to some embodiments of the utility model, the subframe assembly further comprises: the mounting bracket is arranged on the beam body and used for being suspended after being mounted, the mounting bracket and the first reinforcing plate are arranged at intervals in the transverse direction, and the mounting bracket is a cast metal bracket.

According to some embodiments of the utility model, the stringer comprises: the front end of the longitudinal beam rear section is fixedly connected with the rear end of the longitudinal beam front section; the subframe assembly further includes: the swing arm installing support is used for installing a swing arm, the swing arm installing support is arranged in the rear section of the longitudinal beam, and a swing arm passing port is formed in the rear section of the longitudinal beam at a position corresponding to the swing arm installing support.

According to some embodiments of the utility model, the swing arm mounting bracket comprises: roof, preceding curb plate and posterior lateral plate, preceding curb plate with the posterior lateral plate connect respectively in the front and back both sides of roof, preceding curb plate with the posterior lateral plate all is provided with the mounting hole, the mounting hole link up the setting in the fore-and-aft direction, the roof with the top fixed connection of longeron rear section, preceding curb plate with the bottom of posterior lateral plate respectively with the bottom fixed connection of longeron rear section, so that swing arm installing support with form the cavity between the longeron rear section.

According to some embodiments of the utility model, a front flange is arranged at the bottom of the front side plate, a rear flange is arranged at the bottom of the rear side plate, a first flange is arranged at one side of the rear side plate facing the cross beam, the top plate is welded with the top of the rear section of the longitudinal beam, the front flange and the rear flange are respectively welded with the bottom of the rear section of the longitudinal beam, one side of the front side plate facing away from the cross beam and one side of the rear side plate facing away from the cross beam are respectively welded with one side of the rear section of the longitudinal beam facing away from the cross beam, and the first flange is welded with one side of the rear section of the longitudinal beam facing the cross beam.

According to some embodiments of the utility model, the subframe assembly further comprises: nut, second reinforcing plate and third reinforcing plate, the second reinforcing plate set up in on the posterior lateral plate, be provided with the through-hole on the second reinforcing plate, the nut set up in on the second reinforcing plate, the mounting hole the through-hole with the nut sets up relatively, the third reinforcing plate set up in the longeron posterior segment and with second reinforcing plate fixed connection.

According to an embodiment of the second aspect of the present utility model, a vehicle includes: the auxiliary frame assembly.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic structural view of a subframe assembly according to an embodiment of the present utility model;

FIG. 2 is a schematic view of a cross beam according to an embodiment of the present utility model;

FIG. 3 is a schematic view of a mounting bracket and cross beam assembly in accordance with an embodiment of the present utility model;

FIG. 4 is a schematic view of a structure in which a first cavity and a second cavity are formed inside a beam according to an embodiment of the present utility model;

FIG. 5 is a schematic view of a structure in which a reinforcing plate is provided at a lower plate of a cross member according to an embodiment of the present utility model;

FIG. 6 is a schematic structural view of a reinforcing plate according to an embodiment of the present utility model;

FIG. 7 is a schematic structural view of a mounting bracket according to an embodiment of the present utility model;

FIG. 8 is a schematic view of a cross beam lower plate with a groove bead configuration in accordance with an embodiment of the present utility model;

FIG. 9 is a schematic structural view of a front subframe rail according to an embodiment of the utility model;

FIG. 10 is a schematic view of a swing arm mounting bracket according to an embodiment of the utility model disposed at a rear section of a stringer;

FIG. 11 is a schematic illustration of a swing arm mounting bracket welded to a trailing section of a stringer in accordance with an embodiment of the present utility model;

FIG. 12 is a schematic view of a second reinforcement panel disposed at a rear section of a stringer according to an embodiment of the present utility model;

FIG. 13 is a schematic structural view of a swing arm mounting bracket according to an embodiment of the utility model;

FIG. 14 is a schematic view of a swing arm mounting bracket having a first flange according to an embodiment of the present utility model;

FIG. 15 is a schematic view of the configuration of the front and rear rail sections according to an embodiment of the present utility model;

FIG. 16 is a schematic structural view of a trailing section of a stringer according to an embodiment of the present utility model;

fig. 17 is a schematic structural view of a swing arm assembled with a swing arm mounting bracket according to an embodiment of the utility model.

Reference numerals:

300. a subframe assembly;

100. a cross beam;

12. a beam body; 121. a cross beam upper plate; 122. a cross beam lower plate;

13. a first cavity; 14. avoiding the dent;

15. a first reinforcing plate; 151. reinforcing the main board; 152. a side plate; 16. a second cavity;

20. front suspension; 30. rear suspension;

40. a mounting bracket; 41. a holder main body; 42. a mounting part; 50. a fastener;

51. a ring groove weld bead structure; 52. an extension; 53. a lap joint;

200. a longitudinal beam;

60. a longitudinal beam front section; 61. the rear section of the longitudinal beam; 611. a stringer top plate; 612. a stringer floor; 613. a stringer side plate;

70. a swing arm mounting bracket; 71. a top plate; 72. a front side plate; 721. front flanging; 73. a rear side plate; 731. carrying out rear flanging; 732. a first flanging; 74. a mounting hole; 75. welding; 76. a swing arm passing opening;

80. a nut; 81. a second reinforcing plate; 82. a third reinforcing plate; 821. reinforcing the top plate; 822. reinforcing the side plates;

83. a support leg; 90. and (3) swinging arms.

Detailed Description

Embodiments of the present utility model will be described in detail below, with reference to the accompanying drawings, which are exemplary.

A subframe assembly 300 according to an embodiment of the present utility model is described below with reference to fig. 1-17, and the subframe assembly 300 may be a front subframe assembly or a rear subframe assembly, and the description of the front subframe assembly is given below.

As shown in fig. 1-4, a subframe assembly 300 according to an embodiment of the first aspect of the present utility model includes: the longeron 200 and crossbeam 100, longeron 200 is arranged at the lateral interval, and crossbeam 100 includes: the beam body 12 and the first reinforcing plate 15, the beam body 12 is connected between the longitudinal beams 200, the first cavity 13 is formed in the beam body 12, the first reinforcing plate 15 is located in the first cavity 13, and the first reinforcing plate 15 and the beam body 12 jointly define the second cavity 16. The cross member 100 may be a front cross member or a rear cross member, and will be described below by taking the front cross member as an example.

Specifically, as shown in fig. 1-4, the power assembly and the tire are disposed close to the beam 100, so that excitation generated by the power assembly and the tire can cause the beam 100 to vibrate and generate noise, therefore, in order to reduce the influence of excitation generated by the power assembly and the tire on the beam 100, the auxiliary frame beam 100 mainly comprises a beam body 12 and a first reinforcing plate 15, a first cavity 13 is formed in the beam body 12, the beam 100 is in a box-shaped structure, due to the characteristic of good stability of the box-shaped structure, the overall strength of the position can be further improved, the frequency of vibration can be reduced, the first cavity 13 can also form an energy absorption cavity, noise generated at the beam 100 can be absorbed, and the first reinforcing plate 15 is arranged in the first cavity 13, so that the strength and rigidity of the beam 100 can be further enhanced, and the frequency of vibration can be reduced, and the frequency of vibration can be further reduced, and the first cavity 13 and the second cavity 16 can be used as the first cavity 16, so that the frequency of vibration can be generated, and the frequency of vibration can be further reduced, and the frequency of the beam 100 can be further reduced.

Therefore, the first cavity 13 and the second cavity 16 in the beam body 12 form a double-layer box-shaped structure, so that the strength and the rigidity of the position of the beam 100 can be enhanced, the power assembly excitation and the tire excitation vibration transmission energy can be effectively attenuated, and the vibration and the noise in the vehicle can be reduced.

According to some embodiments of the present utility model, as shown in fig. 1 and 4, the beam body 12 includes: the beam upper plate 121 and the beam lower plate 122, the beam upper plate 121 is disposed above the beam lower plate 122, and the beam upper plate 121 and the beam lower plate 122 together form the first cavity 13, and the first reinforcing plate 15 and the beam lower plate 122 together define the second cavity 16. The first cavity 13 is formed by the beam upper plate 121 and the beam lower plate 122, the space is large, the energy transferred by vibration can be fully absorbed, the occurrence of vibration can be reduced, the first reinforcing plate 15 is arranged at the position where the strength of the beam 100 is weak, the strength of the beam 100 can be increased, the second cavity 16 is defined by the reinforcing plate and the beam lower plate 122, the second cavity 16 is positioned in the first cavity 13 to form a double-layer box-shaped structure, the strength of the beam 100 can be improved, the beam is more stable, and when the excitation of a motor and the excitation of a tire in the power assembly are transferred to the position, the stability of the position can be increased due to the double-layer box-shaped structure formed by the first cavity 13 and the second cavity 16, and the first cavity 13 and the second cavity 16 can also serve as energy absorption cavities, so that the vibration and noise generated at the position of the beam 100 can be absorbed through the first cavity 13 and the second cavity 16, the strength and rigidity of the beam 100 can be ensured, and the frequency of vibration can be reduced.

According to some embodiments of the utility model, as shown in fig. 4-6, the first reinforcing plate 15 comprises: the side plate 152 is connected to one side of the reinforcing main plate 151, the side plate 152 is fixedly connected with the beam lower plate 122, the reinforcing main plate 151 is fixedly connected with the beam upper plate 121 and the beam lower plate 122 respectively, the reinforcing main plate 151, the side plate 152 and the beam lower plate 122 jointly define a second cavity 16, and the top of the reinforcing main plate 151 and the top of the beam upper plate 121 are arranged at intervals in the up-down direction. Specifically, the reinforcing main board 151 may provide a supporting effect for the beam upper plate 121 and the beam lower plate 122, the reinforcing main board 151 may increase the strength and rigidity of the beam upper plate 121 and the beam lower plate 122, the top of the reinforcing main board 151 and the top of the beam upper plate 121 are arranged at intervals in the up-down direction, the cavity formed by the top of the reinforcing main board 151 and the top of the beam upper plate 121 at intervals and the second cavity 16 form a double-layer box-shaped structure, and the characteristics of good stability of the box-shaped structure are utilized, so that the strength and rigidity of the beam 100 may be increased.

According to some embodiments of the present utility model, as shown in fig. 2 and 8, the front upper portion of the beam upper plate 121 is provided with the avoiding recess 14, the avoiding recess 14 is used for avoiding the power assembly, the first reinforcing plate 15 is fixedly connected with the bottom of the avoiding recess 14, two side edges of the beam lower plate 122 are provided with the lap joint portion 53, and the front side of the lap joint portion 53 extends forward to form the extension portion 52, and the lap joint portion 53 and the extension portion 52 are fixedly connected with the longitudinal beam 200. Specifically, dodge sunken 14 is set up on the preceding upper portion of crossbeam upper plate 121, dodge sunken 14 can dodge the motor in the power assembly, dodge sunken 14's setting and lead to crossbeam upper plate 121's local area of stress to reduce, intensity is weaker like this, for promoting the intensity of the less department of crossbeam upper plate 121 area of stress, dodge the inside department of crossbeam upper plate 121 of sunken 14 below and set up first reinforcing plate 15, first reinforcing plate 15 and dodge sunken 14's bottom fixed connection to intensity and rigidity of crossbeam upper plate 121 in the less department of area of stress can promoting.

In addition, the front side of the lap joint part 53 provided at the two side edges of the beam lower plate 122 is provided with the extending part 52 extending forward, the lap joint part 53 and the extending part 52 are fixedly connected with the longitudinal beam 200 through welding, the contact area between the extending part 52 and the longitudinal beam 200 can be increased, and the welding length of the welding seam can be increased, so that the connection strength between the beam lower plate 122 and the longitudinal beam 200 can be improved. Moreover, the lap joint part 53 is provided with the ring groove welding bead structure 51, and the welding bead 75 can be increased by arranging the ring groove welding bead structure 51, so that the stress distribution of the cross beam 100 and the longitudinal beam 200 can be more reasonable, and the strength of the position can be improved.

According to some embodiments of the present utility model, as shown in fig. 1 and 3, the subframe assembly 300 further includes: the mounting bracket 40, the mounting bracket 40 is disposed on the beam body 12, and the mounting bracket 40 is used for mounting the rear suspension 30, the mounting bracket 40 and the first reinforcing plate 15 are laterally disposed at intervals, and the mounting bracket 40 is a cast metal bracket.

Wherein the mounting bracket 40 includes: the rear suspension 30 is arranged on the support body 41, the mounting portions 42 are connected to two sides of the support body 41 and fixedly connected with the beam body 12, the rear suspension 30 is fixedly connected to the support body 41 of the mounting support 40, the support strength and rigidity of the support body 41 to the rear suspension 30 can be improved, a containing groove is formed in the middle of the support body 41, the rear suspension 30 and the support body 41 can be conveniently and fixedly connected, interference is prevented, further, the mounting portions 42 are arranged on two sides of the support body 41, the support body 41 is fixedly connected with the beam body 12 through the mounting portions 42, vibration excitation generated at the position of the rear suspension 30 can be transmitted to the mounting portions 42 through the support body 41, and finally transmitted to the beam body 12, so that the vibration excitation can be gradually reduced, vibration is transmitted in a gradually attenuated mode, the vibration and noise of the whole sub-frame assembly 300 can be reduced, and further, the mounting support 40 and the first reinforcing plate 15 are arranged at intervals in the transverse direction, and the strength and the rigidity of the mounting support 40 on the beam body 12 can be further increased. In addition, each mounting portion 42 is provided with a plurality of mounting holes 74, and at least two fasteners 50 are correspondingly penetrated through the mounting holes 74 on the mounting portion 42 to be fixedly connected with the beam body 12, so that the connection is more stable and firm, and the whole mounting portion 42 is in a curve-shaped design, so that the frequency of vibration can be further reduced, and the safety of the auxiliary frame assembly 300 can be improved.

In addition, in order to improve the strength of the mounting point of the rear suspension 30, the mounting bracket 40 is a cast metal bracket, so that the strength and rigidity of the mounting position of the rear suspension 30 and the beam body 12 can be increased, and vibration transmission energy of power assembly excitation and tire excitation can be effectively attenuated, so that vibration and noise in a vehicle can be reduced, riding comfort of passengers in the vehicle can be improved, the risk of local tearing on the subframe assembly 300 can be avoided, and reliability and safety of the subframe assembly 300 can be improved.

According to an embodiment of the present utility model, as shown in fig. 9 and 10, the side member 200 includes: the front end of the longitudinal beam rear section 61 is fixedly connected with the rear end of the longitudinal beam front section 60, and the auxiliary frame assembly 300 further comprises: the swing arm installing support 70, the swing arm installing support 70 is used for installing the swing arm 90, the swing arm installing support 70 is arranged in the rear section 61 of the longitudinal beam, and the rear section 61 of the longitudinal beam is provided with a swing arm passing opening 76 at a position corresponding to the swing arm installing support 70.

Specifically, the front subframe rail 200 of the automobile mainly carries tire load excitation and motion excitation, and if the accuracy of the mounting position of the swing arm 90 is poor, the four-wheel line passing rate of the whole automobile and the stability of the whole automobile are affected, and vibration is also caused. Because the conventional swing arm mounting bracket 70 adopts the welding nut 80 to fix the swing arm 90, deformation is easy to generate in the welding process, and the mounting precision of the swing arm 90 is affected, therefore, for improving the mounting precision of the swing arm 90, the longitudinal beam 200 is designed in a segmented manner, the longitudinal beam 200 is divided into the longitudinal beam front section 60 and the longitudinal beam rear section 61, so that the arrangement of post-welding punching equipment can be facilitated, enough space can be reserved for machining the mounting position of the swing arm 90, specifically, the longitudinal beam rear section 61 and the swing arm mounting bracket 70 can be welded firstly, the swing arm 90 can be fixedly connected with the swing arm mounting bracket 70 through the swing arm through the opening 76, so that the mounting of the swing arm 90 and the swing arm mounting bracket 70 can be conveniently fixed, the mounting position of the swing arm 90 is machined, the mounting precision of the mounting position of the swing arm 90 can be improved, the consistency of four-wheel parameters in a vehicle can be ensured, and the stability of the vehicle can be improved. After machining of the swing arm 90 mounting position is completed, the rear end of the longitudinal beam front section 60 is fixedly connected with the front end of the longitudinal beam rear section 61, so that the influence of the longitudinal beam front section 60 on machining of the swing arm mounting support 70 in the longitudinal beam rear section 61 can be avoided, interference between the longitudinal beam front section 60 and machining equipment can be prevented, the swing arm mounting support 70 and the longitudinal beam rear section 61 are fixedly connected to form a box-shaped structure integrally, strength and rigidity of the swing arm 90 mounting position can be improved, excitation of a power assembly and vibration transmission energy of tire excitation can be effectively attenuated, vibration and noise in a vehicle can be reduced, and comfort of passengers in the vehicle can be improved.

The swing arm mounting bracket 70 is disposed in the front end of the rear section 61 of the longitudinal beam, and the swing arm passing opening 76 is formed in one side of the front end of the rear section 61 of the longitudinal beam, which is away from the cross beam 100. Specifically, the swing arm mounting bracket 70 and the rear longitudinal beam section 61 enclose a box-shaped structure, and the box-shaped structure can improve the strength and rigidity of the mounting position of the swing arm 90, and the swing arm through hole 76 is arranged, so that one end of the swing arm 90 can be conveniently and fixedly connected with the swing arm mounting bracket 70 through the swing arm through hole 76.

According to some embodiments of the present utility model, as shown in fig. 10, a swing arm mounting bracket 70 includes: the roof 71, preceding curb plate 72 and posterior lateral plate 73 are connected respectively in the front and back both sides of roof 71, and preceding curb plate 72 and posterior lateral plate 73 all are provided with mounting hole 74, and mounting hole 74 link up in the fore-and-aft direction and set up, roof 71 and the top fixed connection of longeron back section 61, the bottom of preceding curb plate 72 and posterior lateral plate 73 respectively with the bottom fixed connection of longeron back section 61 to can make the cavity formation between swing arm installing support 70 and the longeron back section 61. Wherein, roof 71 carries out fixed connection with the top of longeron back end 61, can increase the intensity of swing arm installing support 70 top department, the bottom of preceding curb plate 72 and posterior lateral plate 73 respectively with the bottom fixed connection of longeron back end 61, can increase the intensity of swing arm installing support 70 bottom department, also can effectively attenuate power assembly excitation and tire excitation vibration transmission energy, and in addition, the mounting hole 74 that preceding curb plate 72 and posterior lateral plate 73 set up corresponds can be convenient for the bolt to wear to establish and install the swing arm 90 fixedly, because the front end of longeron back end 61 is the opening setting, so, can realize the effect of machining mounting hole 74, thereby can improve the installation accuracy of swing arm 90. Further, a cavity is formed between the swing arm mounting bracket 70 and the rear longitudinal beam section 61, so that one end of the swing arm 90 can be fixedly connected with the swing arm mounting bracket 70 in the cavity, and the cavity can also be used as an energy absorption cavity, thereby preventing noise.

According to some embodiments of the present utility model, as shown in fig. 10 and 12, the bottom of the front side plate 72 is provided with a front flange 721, the bottom of the rear side plate 73 is provided with a rear flange 731, the side of the rear side plate 73 facing the cross member 100 is provided with a first flange 732, the top plate 71 is welded to the top of the rear side member 61, the front flange 721 and the rear flange 731 are respectively welded to the bottom of the rear side member 61, the side of the front side plate 72 facing away from the cross member 100 and the side of the rear side plate 73 facing away from the cross member 100 are respectively welded to the side of the rear side member 61 facing away from the cross member 100, and the first flange 732 is welded to the side of the rear side member 61 facing the cross member 100.

Specifically, the top plate 71 in the swing arm mounting bracket 70 and the top of the rear girder section 61 are provided with the annular groove bead 75, so that the top plate 71 and the top of the rear girder section 61 can be fixedly connected through welding, thereby ensuring the connection stability of the top plate 71 and the top of the rear girder section 61, the bottom of the front flange 721 and the rear girder section 61 is provided with the annular groove bead 75, the bottom of the rear flange 731 and the bottom of the rear girder section 61 is provided with the annular groove bead 75, so that the front flange 721 and the rear flange 731 can be conveniently and respectively connected with the bottom of the rear girder section 61 through welding, the connection stability and firmness of the front flange 721 and the rear flange 731 and the bottom of the rear girder section 61 can be improved, further, the welding bead 75 is arranged on the side of the front side plate 72, which is away from the cross girder 100, the side of the rear plate 73, which is away from the cross girder 100, and the side of the rear girder section 61, which is away from the cross girder 100, in this way, the side of the front side plate 72 facing away from the cross beam 100 and the side of the rear side plate 73 facing away from the cross beam 100 are welded with the side of the rear longitudinal beam section 61 facing away from the cross beam 100, so that the connection between the side of the swing arm mounting bracket 70 facing away from the cross beam 100 and the side of the rear longitudinal beam section 61 facing away from the cross beam 100 is more stable and firm, the first flange 732 and the side of the rear longitudinal beam section 61 facing toward the cross beam 100 are also provided with the ring groove weld bead 75, so that the connection between the first flange 732 and the side of the rear longitudinal beam section 61 facing toward the cross beam 100 is more firm, and thus, the top, bottom, side facing away from the cross beam 100 and side facing toward the cross beam 100 of the swing arm mounting bracket 70 are all welded with the rear longitudinal beam section 61, so that the connection strength of the swing arm mounting bracket 70 at the top, bottom, side facing away from the cross beam 100 and side facing toward the cross beam 100 can be increased, so that the strength and rigidity of the swing arm mounting bracket 70 can be integrally improved, and the handling stability of the vehicle can also be improved.

In addition, the welding bead 75 is not arranged on the side, close to the front, of the side, close to the cross beam 100, of the swing arm mounting support 70, when the swing arm 90 and the swing arm mounting support 70 are fastened through bolts, the swing arm mounting support 70 can deform, the swing arm 90 can be fixed, the swing arm mounting support 70 can be prevented from being too high in rigidity in the fastening direction of the bolts, too much bolt clamping force consumed by the swing arm mounting support 70 can be avoided, and abnormal noise of a vehicle under severe working conditions can be prevented.

According to some embodiments of the present utility model, as shown in fig. 12 and 13, the subframe assembly 300 further includes: nut 80, second reinforcing plate 81 and third reinforcing plate 82, second reinforcing plate 81 sets up on posterior lateral plate 73, is provided with the through-hole on the second reinforcing plate 81, and nut 80 sets up on second reinforcing plate 81, and mounting hole 74, through-hole and nut 80 set up relatively, and third reinforcing plate 82 sets up in longeron back section 61, and third reinforcing plate 82 and second reinforcing plate 81 fixed connection moreover. Specifically, the second reinforcing plate 81 is provided with a through hole, the nut 80 is provided on the second reinforcing plate 81, and the mounting hole 74, the through hole, and the nut 80 are disposed opposite to each other. The second reinforcing plate 81 is welded on the rear side plate 73, so that the strength of the rear side plate 73 in the swing arm mounting bracket 70 can be further increased, in addition, the second reinforcing plate 81 is arranged, the strength of the locking position of the nut 80 can be increased, the swing arm 90 can be fixed more firmly through the swing arm mounting bracket 70, the through holes in the second reinforcing plate 81 are arranged, the bolts can conveniently penetrate, the bolts can sequentially penetrate through the mounting holes 74 and the through holes, and finally the bolts are locked and fixed through the nuts 80, so that the stability of the fixed connection of the swing arm 90 and the swing arm mounting bracket 70 can be ensured.

Wherein, the third reinforcing plate 82 is located at the rear of the swing arm mounting bracket 70, and the third reinforcing plate 82 is fixedly connected with the second reinforcing plate 81 by welding, so that the rigidity and durability of the swing arm mounting bracket 70 can be further increased.

As shown in fig. 10 and 12, the trailing side member 61 includes: the longitudinal beam top plate 611, the longitudinal beam bottom plate 612 and the longitudinal beam side plate 613, the longitudinal beam bottom plate 612 is arranged below the longitudinal beam top plate 611, and the third reinforcing plate 82 is fixedly connected with the longitudinal beam side plate 613 and the longitudinal beam bottom plate 612 respectively. Wherein, the third reinforcing plate 82 can play a supporting and reinforcing role on the girder top plate 611 and the girder bottom plate 612, and the strength of the swing arm mounting bracket 70 can be further increased due to the welded connection of the third reinforcing plate 82 and the swing arm mounting bracket 70.

Further, as shown in fig. 12, the third reinforcing plate 82 includes: the reinforcing top plate 821 and the reinforcing side plates 822, the reinforcing side plates 822 are arranged on the inner side and the outer side of the reinforcing top plate 821, the reinforcing side plates 822 are fixedly connected with the longitudinal beam side plates 613, the front ends of the reinforcing top plate 821 and the reinforcing side plates 822 are respectively fixedly connected with the second reinforcing plate 81, and at least one reinforcing side plate 822 is fixedly connected with the longitudinal beam bottom plate 612. Specifically, the reinforcing side plates 822 are disposed in the trailing side frame 61 such that the reinforcing side plates 822 can increase the strength of both the inner and outer sides of the trailing side frame 61, the front ends of the reinforcing top plates 821 and the front ends of the reinforcing side plates 822 are fixedly connected with the second reinforcing plates 81, respectively, so that the strength of the swing arm mounting bracket 70 can be further increased, and also, at least one reinforcing side plate 822 is fixedly connected with the trailing side frame floor 612, so that the strength of the connection of the reinforcing side plates 822 with the trailing side frame floor 612 can be increased, so that the strength of the swing arm mounting bracket 70 at the bottom can be further increased.

Also, as shown in fig. 12, at least one reinforcing side plate 822 is provided with a leg 83, and the leg 83 is fixedly connected to the side sill base 612. The setting of the supporting legs 83 on the reinforcing side plate 822 can facilitate the fixed connection between the reinforcing side plate 822 and the longitudinal beam bottom plate 612, further, the supporting legs 83 can be multiple, the supporting legs 83 are fixedly connected with the longitudinal beam bottom plate 612, and the contact area between the supporting legs 83 and the longitudinal beam bottom plate 612 can be further increased, so that the connection between the supporting legs 83 and the longitudinal beam bottom plate 612 is more stable.

As shown in fig. 1, a vehicle according to an embodiment of a second aspect of the present utility model includes: the subframe assembly 300 of the above embodiment. The subframe assembly 300 further includes: the cross member 100 and the side member 200, the front suspension 20 is provided on the front cross member, and the rear suspension 30 is provided on the rear cross member.

In the description of the present utility model, 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 utility model 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 utility model.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A subframe assembly (300), comprising:

longitudinal beams (200), wherein the longitudinal beams (200) are arranged at intervals in the transverse direction;

a cross beam (100), the cross beam (100) comprising: the beam body (12) and first reinforcing plate (15), beam body (12) connect in between longeron (200), be formed with first cavity (13) in beam body (12), first reinforcing plate (15) are located in first cavity (13), first reinforcing plate (15) with beam body (12) together define second cavity (16).

2. The subframe assembly (300) according to claim 1, wherein the cross-member body (12) comprises: the beam upper plate (121) and the beam lower plate (122), the beam upper plate (121) is arranged above the beam lower plate (122) and forms the first cavity (13) together with the beam lower plate (122), and the first reinforcing plate (15) and the beam lower plate (122) define the second cavity (16) together.

3. The subframe assembly (300) according to claim 2, wherein said first reinforcement plate (15) comprises: strengthen mainboard (151) and curb plate (152), curb plate (152) connect in one side of strengthening mainboard (151) and with crossbeam hypoplastron (122) fixed connection, strengthen mainboard (151) respectively with crossbeam upper plate (121) with crossbeam hypoplastron (122) fixed connection, strengthen mainboard (151) curb plate (152) with crossbeam hypoplastron (122) jointly define second cavity (16), the top of strengthening mainboard (151) with the top of crossbeam upper plate (121) is upper and lower direction interval setting.

4. The subframe assembly (300) according to claim 2, wherein an avoidance recess (14) is provided at a front upper portion of the cross beam upper plate (121), the avoidance recess (14) is used for avoiding the power assembly, and the first reinforcing plate (15) is fixedly connected with a bottom of the avoidance recess (14); and/or

The two side edges of the cross beam lower plate (122) are provided with lap joint parts (53), the front sides of the lap joint parts (53) extend forwards to form extension parts (52), and the lap joint parts (53) and the extension parts (52) are fixedly connected with the longitudinal beams (200).

5. The subframe assembly (300) of claim 1, further comprising: the mounting bracket (40), the mounting bracket (40) set up in on the crossbeam body (12) and be used for installing back suspension (30), the mounting bracket (40) with first reinforcing plate (15) are in horizontal interval setting, the mounting bracket (40) is the metal stand of casting.

6. The subframe assembly (300) of claim 1, wherein said longitudinal beam (200) comprises: a longitudinal beam front section (60) and a longitudinal beam rear section (61), wherein the front end of the longitudinal beam rear section (61) is fixedly connected with the rear end of the longitudinal beam front section (60);

the subframe assembly (300) further comprises: swing arm installing support (70), swing arm installing support (70) are used for installing swing arm (90), swing arm installing support (70) set up in longeron back end (61), longeron back end (61) with swing arm passing through mouth (76) have been seted up in the position department that corresponds of swing arm installing support (70).

7. The subframe assembly (300) of claim 6, wherein said swing arm mounting bracket (70) comprises: roof (71), preceding curb plate (72) and posterior lateral plate (73), preceding curb plate (72) with posterior lateral plate (73) connect respectively in both sides around roof (71), preceding curb plate (72) with posterior lateral plate (73) all are provided with mounting hole (74), mounting hole (74) link up the setting in the fore-and-aft direction, roof (71) with the top fixed connection of longeron back end (61), preceding curb plate (72) with the bottom of posterior lateral plate (73) respectively with the bottom fixed connection of longeron back end (61), so that swing arm installing support (70) with form the cavity between longeron back end (61).

8. The subframe assembly (300) according to claim 7, wherein a front flange (721) is provided at the bottom of the front side plate (72), a rear flange (731) is provided at the bottom of the rear side plate (73), a first flange (732) is provided at a side of the rear side plate (73) facing the cross member (100), the top plate (71) is welded to the top of the rear side member (61), the front flange (721) and the rear flange (731) are welded to the bottom of the rear side member (61), a side of the front side plate (72) facing away from the cross member (100) and a side of the rear side plate (73) facing away from the cross member (100) are welded to a side of the rear side member (61) facing away from the cross member (100), and the first flange (732) is welded to a side of the rear side member (61) facing the cross member (100).

9. The subframe assembly (300) of claim 7, further comprising: nut (80), second reinforcing plate (81) and third reinforcing plate (82), second reinforcing plate (81) set up in on posterior lateral plate (73), be provided with the through-hole on second reinforcing plate (81), nut (80) set up in on second reinforcing plate (81), mounting hole (74) the through-hole with nut (80) set up relatively, third reinforcing plate (82) set up in longeron back end (61) and with second reinforcing plate (81) fixed connection.

10. A vehicle, characterized by comprising: the subframe assembly (300) of any one of claims 1-9.