CN216034647U - Rear auxiliary frame and vehicle - Google Patents

Abstract

The application discloses back sub vehicle frame and vehicle belongs to frame construction technical field. This back sub vehicle frame includes: a first arm, a second arm, a first beam, a second beam, and a third beam; the first beam, the second beam and the third beam are arranged between the first arm and the second arm in parallel, and the extending direction of the first arm is the same as that of the second arm and is vertical to that of the first beam; the first arm is provided with a first pull rod support fixing part and a first steering machine fixing part on the upper part of one end connected with the first beam, the second arm is provided with a second pull rod support fixing part and a second steering machine fixing part on the upper part of one end connected with the first beam, the first pull rod support fixing part and the second pull rod support fixing part are suitable for fixing the pull rod supports, and the first steering machine fixing part and the second steering machine fixing part are suitable for fixing the steering machines. This back sub vehicle frame can be used for the long wheelbase vehicle, can be used for short wheelbase vehicle again, has reduced manufacturing cost.

Description

Rear auxiliary frame and vehicle

Technical Field

The application relates to the technical field of frame structures, in particular to a rear auxiliary frame and a vehicle.

Background

At present, as the development speed of the automobile industry is faster and faster, more and more people tend to buy vehicles with long wheelbase, wherein the wheelbase refers to the distance from the center of a front axle to the center of a rear axle of an automobile, and the longer the wheelbase, the larger the use space in the vehicle is.

In the related art, the rear auxiliary frame is a framework of a rear axle and has the functions of isolating vibration and noise and reducing the possibility that the rear auxiliary frame directly enters a carriage. In general, a long-wheelbase vehicle requires a rear wheel steering system to be mounted on its rear sub-frame to satisfy the minimum turning radius of the long-wheelbase vehicle, while a short-wheelbase vehicle does not require a rear wheel steering system to be mounted on its rear sub-frame. At present, rear sub frames are required to be manufactured for long-wheelbase vehicles and short-wheelbase vehicles respectively, and the rear sub frames of the long-wheelbase vehicles and the rear sub frames of the short-wheelbase vehicles do not have universality.

SUMMERY OF THE UTILITY MODEL

In view of this, the application provides a rear subframe and vehicle, can be used to long wheel base vehicle, can be used to short wheel base vehicle again, has the commonality in using.

Specifically, the method comprises the following technical scheme:

in one aspect, an embodiment of the present application provides a rear subframe, where the rear subframe includes a first arm, a second arm, a first beam, a second beam, and a third beam;

the first beam, the second beam and the third beam are arranged between the first arm and the second arm in parallel, and the extending direction of the first arm is the same as that of the second arm and is vertical to that of the first beam;

the first arm is provided with a first pull rod support fixing part and a first steering machine fixing part on the upper part of one end connected with the first beam, the second arm is provided with a second pull rod support fixing part and a second steering machine fixing part on the upper part of one end connected with the first beam, the first pull rod support fixing part and the second pull rod support fixing part are suitable for fixing the pull rod support, and the first steering machine fixing part and the second steering machine fixing part are suitable for fixing the steering machine.

In some embodiments, the first tie rod holder fixing portion includes a first positioning hole, a second positioning hole, and a third positioning hole, an opening of the first positioning hole and an opening of the second positioning hole are located on an upper surface of the first arm, and an opening of the third positioning hole is located on a side surface of the first arm;

the first steering gear fixing portion has a first fixing hole, and an opening of the first fixing hole is located on an upper surface of the first arm.

In some embodiments, the second tie rod holder fixing part has a fourth positioning hole, a fifth positioning hole, and a sixth positioning hole, an opening of the fourth positioning hole and an opening of the fifth positioning hole are located on the upper surface of the second arm, and an opening of the sixth positioning hole is located on a side surface of the second arm;

the second steering gear fixing portion has a second fixing hole, and an opening of the second fixing hole is located on an upper surface of the second arm.

In some embodiments, the rear subframe further comprises: a first pull rod support and a second pull rod support;

the first pull rod bracket is fixedly connected with the first pull rod bracket fixing part;

the second pull rod support is fixedly connected with the second pull rod support fixing part.

In some embodiments, the first brace bracket includes a first bracket body connected to the first brace bracket fixation portion and a first lug on the first bracket body;

the second pull rod support comprises a second support body and a second support lug, the second support body is connected with the second pull rod support fixing portion, and the second support lug is located on the second support body.

In some embodiments, the first arm has a first link securing assembly thereon;

the first connecting rod fixing assembly comprises a first connecting rod fixing piece, a second connecting rod fixing piece and a third connecting rod fixing piece;

the first connecting rod fixing piece and the second connecting rod fixing piece are located on one side, away from the second arm, of the first arm, and the third connecting rod fixing piece is located on the upper surface of the first arm.

In some embodiments, the second arm has a second link securing assembly thereon;

the second connecting rod fixing component comprises a fifth connecting rod fixing piece, a sixth connecting rod fixing piece and a seventh connecting rod fixing piece;

the fifth connecting rod fixing piece and the sixth connecting rod fixing piece are located on one side, away from the first arm, of the first arm, and the seventh connecting rod fixing piece is located on the upper surface of the second arm.

In some embodiments, the rear subframe further comprises a motor fixing assembly;

the motor fixing assembly comprises a first motor fixing part, a second motor fixing part and a third motor fixing part;

the first motor fixing piece is positioned on one side, facing the second beam, of the first beam; the first part of the second motor fixing part is positioned on one side of the first arm facing the second arm, and the second part of the second motor fixing part is positioned on the upper surface of the third beam; the third portion of the third motor mount is located on a side of the second arm facing the first arm, and the fourth portion of the third motor mount is located on an upper surface of the third beam.

In some embodiments, the first arm, the second arm, the first beam, the second beam, and the third beam are all made of aluminum alloy.

On the other hand, this application embodiment still provides a vehicle, the vehicle includes the above-mentioned rear sub frame of an aspect.

The technical scheme provided by the embodiment of the application has the beneficial effects that at least:

when the rear auxiliary frame provided by the embodiment of the application is used for a long-wheelbase vehicle, the steering machine is fixed through the first steering machine fixing part and the second steering machine fixing part, and the steering machine is fixed on the long-wheelbase vehicle; when the back sub vehicle frame that this application embodiment provided is used for short wheel base vehicle, through with the fixed first pull rod support of first pull rod support fixed part, the fixed second pull rod support of second pull rod support fixed part realizes fixing first pull rod support and second pull rod support to short wheel base vehicle on.

Because the back sub vehicle frame that this application embodiment provided utilizes first steering wheel fixed part, the second steering wheel fixed part, first pull rod support fixed part, second pull rod support fixed part, can realize with the steering wheel, the nimble assembly of first pull rod support and second pull rod support, make the back sub vehicle frame that this application embodiment provided both can be used for long wheelbase vehicle, can be used for short wheelbase vehicle again, have the commonality in using, and then reduced the manufacturing cost of back sub vehicle frame.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic structural view of a rear subframe according to an embodiment of the present disclosure;

FIG. 2 is an exploded view of a rear subframe according to an embodiment of the present disclosure;

FIG. 3 is a schematic view of a rear sub-frame as provided by an embodiment of the present application in use in a short wheelbase vehicle;

fig. 4 is a schematic view of a rear sub-frame provided in an embodiment of the present application when used in a long wheelbase vehicle.

The reference numerals in the drawings denote:

1-a first arm; 2-a second arm; 3-a first beam; 4-a second beam; 5-a third beam; 6-a first pull rod support fixing part; 6 a-a first locating hole; 6 b-a second positioning hole; 6 c-a third positioning hole; 7-a first steering gear fixing part; 7 a-a first fixing hole; 8-a second pull rod support fixing part; 8 a-a fourth locating hole; 8 b-a fifth locating hole; 8 c-a sixth positioning hole; 9-a second steering gear fixing part; 9 a-a second fixing hole; 10-a pull rod bracket; 10 a-a first tie rod; 10 b-a second tie rod; 11-a steering gear; 12-a first tie rod bracket; 12 a-a first stent body; 12 b-a first lug; 13-a second tie rod bracket; 13 a-a second stent body; 13 b-a second lug; 14-a first link securing assembly; 14 a-first link securing member; 14 b-a second link securing member; 14 c-a third link securing member; 15-a second link securing assembly; 15 a-a fifth link securing member; 15 b-a sixth link securing member; 15 c-a seventh link mount; 16-a motor fixing assembly; 16 a-a first motor mount; 16 b-a second motor mount; 16 c-third motor mount.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Reference to orientation terms in the embodiments of the present application, such as "upper," "lower," "side," and the like, are generally based on the relative relationship of the orientations shown in fig. 1, and these orientation terms are used merely for clarity of description of the structures and the relationship between the structures, and are not used for describing absolute orientations. When the product is placed in different postures, the orientation may be changed, for example, "up" and "down" may be interchanged. It should be noted that in the embodiments of the present application, the reference to "upper portion" refers to the side of the rear subframe away from the ground.

In order to make the technical solutions and advantages of the present application clearer, the following will describe the embodiments of the present application in further detail with reference to the accompanying drawings.

The embodiment of the application provides a rear auxiliary frame, and a schematic structural diagram of the rear auxiliary frame is shown in fig. 1.

Referring to fig. 1, the rear subframe includes a first arm 1, a second arm 2, a first beam 3, a second beam 4, and a third beam 5;

the first beam 3, the second beam 4 and the third beam 5 are arranged between the first arm 1 and the second arm 2 in parallel, the extending direction of the first arm 1 is the same as that of the second arm 2, and the extending direction of the first beam 3 is vertical;

the first arm 1 has a first tie rod bracket fixing portion 6 and a first steering gear fixing portion 7 on an upper portion of an end connected to the first beam 3, the second arm 2 has a second tie rod bracket fixing portion 8 and a second steering gear fixing portion 9 on an upper portion of an end connected to the first beam 3, the first tie rod bracket fixing portion 6 and the second tie rod bracket fixing portion 8 are adapted to fix a tie rod 10, and the first steering gear fixing portion 7 and the second steering gear fixing portion 9 are adapted to fix a steering gear 11.

Therefore, the technical scheme provided by the embodiment of the application has the beneficial effects that at least: when the rear subframe provided by the embodiment of the application is used for a long-wheelbase vehicle, referring to fig. 4, the steering gear 11 is fixed through the first steering gear fixing part 7 and the second steering gear fixing part 9, so that the steering gear 11 is fixed on the long-wheelbase vehicle; when the rear subframe provided by the embodiment of the present application is used for a short wheelbase vehicle, referring to fig. 3, the first tie rod bracket 12 and the second tie rod bracket 13 are fixed to the short wheelbase vehicle by fixing the first tie rod bracket fixing part 6 to the first tie rod bracket 12 and fixing the second tie rod bracket fixing part 8 to the second tie rod bracket 13.

Because the back sub vehicle frame that this application embodiment provided utilizes first steering gear fixed part 7, second steering gear fixed part 9, first pull rod support fixed part 6, second pull rod support fixed part 8, can realize with the nimble assembly of steering gear 11, first pull rod support 10a and second pull rod support 10b for the back sub vehicle frame that this application embodiment provided both can be used for long wheel base vehicle, can be used for short wheel base vehicle again, has the commonality in using, and then has reduced the manufacturing cost of back sub vehicle frame.

It will be appreciated that a tie rod arrangement is provided on the steering gear. When the back sub vehicle frame that this application embodiment provided is used for the long wheelbase vehicle, need not to utilize first pull rod support fixed part 6 and second pull rod support fixed part 8 to fix the pull rod structure on the steering gear, and only need utilize first steering gear fixed part 7 and second steering gear fixed part 9 fixed steering gear 11, can realize fixing the rear sub vehicle frame with steering gear 11.

The following further describes the mutual positions and connection relationships among the parts of the rear subframe and the functions of the parts, etc. provided in the embodiments of the present application:

in some embodiments, referring to fig. 2, the first tie bar holder fixing part 6 has a first positioning hole 6a, a second positioning hole 6b, and a third positioning hole 6c, an opening of the first positioning hole 6a and an opening of the second positioning hole 6b are located on the upper surface of the first arm 1, and an opening of the third positioning hole 6c is located on the side surface of the first arm 1;

the first steering gear fixing portion 7 has a first fixing hole 7a, and an opening of the first fixing hole 7a is located on an upper surface of the first arm 1.

So arranged, the mounting of the first tie rod bracket 12 and the steering gear 11 is facilitated. Specifically, when the rear subframe provided in the embodiment of the present application is used in a short wheelbase vehicle, the first tie rod bracket 12 is fixed to the first tie rod bracket fixing portion 6 by a bolt; when the rear sub frame provided in the present embodiment is used for a long-wheelbase vehicle, a bolt is screwed into the first fixing hole 7a, thereby fixing one end of the steering gear 11 to the first steering gear fixing portion 7.

In some embodiments, the first tie rod bracket fixing portion 6 further includes a first boss and a second boss, the first boss and the second boss are located on the upper surface of the first arm 1, the first positioning hole 6a penetrates through the first boss, and the second positioning hole 6b penetrates through the second boss.

In some embodiments, the cross-section of the first boss and the second boss are the same shape, including but not limited to circular, elliptical, triangular, quadrilateral, pentagonal, and the like.

In some embodiments, the height of the first boss ranges from 2mm to 4mm, for example, the height of the first boss may range from 2.0mm, 2.3mm, 3.0mm, 3.5mm, 4 mm.

In some embodiments, the height of the second boss ranges from 2mm to 4mm, for example, the height of the second boss may range from 2.0mm, 2.3mm, 3.0mm, 3.5mm, 4 mm.

In some embodiments, the first boss and the second boss are machined by cutting.

In some embodiments, referring to fig. 1, the second rod holder fixing portion 8 has a fourth positioning hole 8a, a fifth positioning hole 8b and a sixth positioning hole 8c, an opening of the fourth positioning hole 8a and an opening of the fifth positioning hole 8b are located on the upper surface of the second arm 2, and an opening of the sixth positioning hole 8c is located on the side surface of the second arm 2;

the second steering gear fixing portion 9 has a second fixing hole 9a, and an opening of the second fixing hole 9a is located on the upper surface of the second arm 2.

So arranged, the mounting of the second tie rod bracket 13 and the steering gear 11 is facilitated. Specifically, when the rear subframe provided in the embodiment of the present application is used in a short wheelbase vehicle, the second tie rod bracket 13 is fixed to the second tie rod bracket fixing portion 8 by a bolt; when the rear sub frame provided in the present embodiment is used for a long-wheelbase vehicle, the bolt is screwed into the second fixing hole 9a, thereby fixing the other end of the steering gear 11 to the second steering gear fixing portion 9.

In some embodiments, the second tie rod bracket fixing part 8 further includes a third boss and a fourth boss, the third boss and the fourth boss are located on the upper surface of the first arm 1, the fourth positioning hole 8a penetrates through the third boss, and the fifth positioning hole 8b penetrates through the fourth boss.

In some embodiments, the cross-sections of the third and fourth bosses are the same shape, including but not limited to circular, elliptical, triangular, quadrilateral, pentagonal, and the like.

In some embodiments, the height of the third boss ranges from 2mm to 4mm, for example, the height of the third boss may range from 2.0mm, 2.3mm, 3.0mm, 3.5mm, 4 mm.

In some embodiments, the height of the fourth boss ranges from 2mm to 4mm, for example, the height of the fourth boss may range from 2.0mm, 2.3mm, 3.0mm, 3.5mm, 4 mm.

In some embodiments, the third boss and the fourth boss are machined by cutting.

In some embodiments, referring to fig. 3, the rear subframe further comprises: a first tie bar holder 12 and a second tie bar holder 13;

the first pull rod bracket 12 is fixedly connected with the first pull rod bracket fixing part 6;

the second pull rod bracket 13 is fixedly connected with the second pull rod bracket fixing part 8.

So arranged, the first pull rod 10a and the second pull rod 10b are convenient to install and fix. Specifically, when the rear subframe provided in the embodiment of the present application is used for a short wheelbase vehicle, referring to fig. 3, it is necessary to fix the first tie bar bracket 12 to the first tie bar bracket fixing portion 6 by a bolt, fix the second tie bar bracket 13 to the second tie bar bracket fixing portion 8 by a bolt, and further fix the first tie bar 10a by the first tie bar bracket 12 and fix the second tie bar 10b by the second tie bar bracket 13.

In some embodiments, referring to fig. 3, the first tie rod bracket 12 includes a first bracket body 12a and a first lug 12b, the first bracket body 12a being connected with the first tie rod bracket fixing portion 6, the first lug 12b being located on the first bracket body 12 a;

the second tie rod bracket 13 includes a second bracket body 13a and a second lug 13b, the second bracket body 13a is connected with the second tie rod bracket fixing portion 8, and the second lug 13b is located on the second bracket body 13 a.

It is understood that, referring to fig. 3, the first bracket body 12a includes two intersecting plate bodies, and the first bracket body 12a is in contact with the first tie rod bracket fixing portion 6 when the first tie rod bracket 12 is installed; the second bracket body 13a includes two intersecting plate bodies, and the second bracket body 13a contacts the second tie rod bracket fixing portion 8 when the second bracket 13 is mounted.

With such an arrangement, the first pull rod bracket 12 is conveniently fixed on the first pull rod bracket fixing part 6, and the first pull rod 10a is conveniently installed on the first pull rod bracket 12; the second pull rod bracket 13 is conveniently fixed on the second pull rod bracket fixing part 8, and the second pull rod is conveniently installed on the second pull rod bracket 13.

In some embodiments, referring to fig. 4, the first arm 1 has a first link securing assembly 14 thereon;

the first link fixing assembly 14 includes a first link fixing part 14a, a second link fixing part 14b, and a third link fixing part 14 c;

the first and second link fixtures 14a and 14b are located on a side of the first arm 1 facing away from the second arm 2, and the third link fixture 14c is located on an upper surface of the first arm 1.

With the arrangement, the first link fixing part 14a, the second link fixing part 14b and the third link fixing part 14c are arranged on different installation surfaces, so that connection with a connecting rod of a suspension is facilitated, and the structure of the rear subframe is more compact.

In some embodiments, the connection manner of the first link fixture 14a and the first arm 1, the connection manner of the second link fixture 14b and the first arm 1, and the connection manner of the third link fixture 14c and the first arm 1 may be welding.

In some embodiments, referring to fig. 4, the second arm 2 has a second link securing assembly 15 thereon;

the second connecting rod fixing component 15 comprises a fifth connecting rod fixing piece 15a, a sixth connecting rod fixing piece 15b and a seventh connecting rod fixing piece 15 c;

the fifth and sixth link fixtures 15a and 15b are located on a side of the second arm 2 facing away from the first arm 1, and the seventh link fixture 15c is located on an upper surface of the second arm 2.

So set up, set up fifth connecting rod mounting 15a, sixth connecting rod mounting 15b and seventh connecting rod mounting 15c on the installation face of difference, be convenient for be connected with the connecting rod of suspension, make the structure of back sub vehicle frame compacter simultaneously.

In some embodiments, the connection manner of the fifth link fastener 15a and the second arm 2, the connection manner of the sixth link fastener 15b and the seventh link fastener 15c and the second arm 2 may be welding.

In some embodiments, referring to fig. 3, the rear subframe also includes a motor mount assembly 16;

the motor fixing assembly 16 includes a first motor fixing part 16a, a second motor fixing part 16b and a third motor fixing part 16 c;

the first motor mount 16a is located on the side of the first beam 3 facing the second beam 4; the first part of the second motor fixing piece 16b is positioned on one side of the first arm 1 facing the second arm 2, and the second part of the second motor fixing piece 16b is positioned on the upper surface of the third beam 5; a third portion of the third motor mount 16c is located on the side of the second arm 2 facing the first arm 1, and a fourth portion of the third motor mount 16c is located on the upper surface of the third beam 5.

So set up, be convenient for install the motor on the back sub vehicle frame.

In some embodiments, the connection of the first motor mount 16a to the first beam 3, the connection of the second motor mount 16b to the second beam 4, and the connection of the third motor mount 16c to the third beam 5 may be welded.

It can be understood that the first motor fixing part 16a, the second motor fixing part 16b and the third motor fixing part 16c are located at positions which can be adjusted according to the assembling requirements of different types of motors, so as to assemble different types of motors.

In some embodiments, the first arm 1, the second arm 2, the first beam 3, the second beam 4, and the third beam 5 are all made of aluminum alloy.

So set up, not only can satisfy the user demand of back sub vehicle frame, still be favorable to reducing the weight of back sub vehicle frame to improve the brake performance of vehicle.

In some embodiments, the method of making the first arm 1 and the second arm 2 comprises low pressure casting.

In some embodiments, the method of making the first, second, and third beams 3, 4, 5 includes casting, extrusion, or the like.

In some embodiments, the first beam 3, the second beam 4, and the third beam 5 are square tubes or circular tubes, as shown in fig. 1, and the first beam 3, the second beam 4, and the third beam 5 are square tubes.

In some embodiments, referring to fig. 2, on the side of the first arm 1 facing the second arm 2 there is a first interface 101, a second interface 102 and a third interface 103; on the side of the second arm 2 facing the first arm 1, there are a fourth interface 104, a fifth interface 105 and a sixth interface 106.

Through setting up first interface 101, second interface 102, third interface 103, fourth interface 104, fifth interface 105 and sixth interface 106, can increase welded area, be convenient for firmly fix first roof beam 3, second roof beam 4 and third roof beam 5 and first arm 1 and second arm 2, and then promote the intensity of back sub vehicle frame.

In some embodiments, the first beam 3, the second beam 4 and the third beam 5 are all the same length. Alternatively, the lengths of the first beam 3, the second beam 4 and the third beam 5 may be selectively set according to the length of the vehicle body, and are not particularly limited in the embodiment of the present application.

In some embodiments, the cross-sectional shapes of the first interface 101, the second interface 102, the third interface 103, the fourth interface 104, the fifth interface 105, and the sixth interface 106 include, but are not limited to, circular, square, and the like. For example, the cross-sections of the first port 101, the second port 102, the third port 103, the fourth port 104, the fifth port 105, and the sixth port 106 are all square in shape.

In the installation process, after one end of the first beam 3 is inserted into the first interface 101, the first beam 3 and the first arm 1 are fixed by welding; after the other end of the first beam 3 is inserted into the fourth interface 104, the first beam 3 and the second arm 2 are fixed by welding; after one end of the second beam 4 is inserted into the second interface 102, the second beam 4 is fixed with the first arm 1 by welding; after the other end of the second beam 4 is inserted into the fifth interface 105, the second beam 4 and the second arm 2 are fixed by welding; after one end of the third beam 5 is inserted into the third interface 103, the third beam 5 and the first arm 1 are fixed by welding; after the other end of the third beam 5 is inserted into the sixth interface 106, the third beam 5 and the second arm 2 are fixed by welding.

Embodiments of the present application further provide a vehicle comprising a rear sub-frame as defined in the above embodiments.

Based on having used above-mentioned back sub vehicle frame, need not to make back sub vehicle frame respectively to long wheelbase vehicle and short wheelbase vehicle, long wheelbase vehicle and short wheelbase vehicle can general the back sub vehicle frame that this application embodiment provided to be favorable to saving manufacturing cost.

In this application, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "plurality" means two or more unless expressly limited otherwise.

Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the present application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only.

It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.

Claims (10)

1. A rear subframe, characterized in that it comprises a first arm (1), a second arm (2), a first beam (3), a second beam (4) and a third beam (5);

the first beam (3), the second beam (4) and the third beam (5) are arranged between the first arm (1) and the second arm (2) in parallel, the extending direction of the first arm (1) is the same as that of the second arm (2), and the extending direction of the first beam (3) is vertical to that of the second beam;

the first arm (1) is provided with a first pull rod support fixing part (6) and a first steering machine fixing part (7) on the upper part of one end connected with the first beam (3), the second arm (2) is provided with a second pull rod support fixing part (8) and a second steering machine fixing part (9) on the upper part of one end connected with the first beam (3), the first pull rod support fixing part (6) and the second pull rod support fixing part (8) are suitable for fixing a pull rod (10), and the first steering machine fixing part (7) and the second steering machine fixing part (9) are suitable for fixing a steering machine (11).

2. The rear sub frame according to claim 1, wherein the first tie bar bracket fixing portion (6) includes a first positioning hole (6a), a second positioning hole (6b), and a third positioning hole (6c), an opening of the first positioning hole (6a) and an opening of the second positioning hole (6b) are located on an upper surface of the first arm (1), and an opening of the third positioning hole (6c) is located on a side surface of the first arm (1);

the first steering gear fixing portion (7) has a first fixing hole (7a), and an opening of the first fixing hole (7a) is located on an upper surface of the first arm (1).

3. The rear sub frame according to claim 2, wherein the second tie bar bracket fixing portion (8) has a fourth positioning hole (8a), a fifth positioning hole (8b), and a sixth positioning hole (8c), an opening of the fourth positioning hole (8a) and an opening of the fifth positioning hole (8b) are located on the upper surface of the second arm (2), and an opening of the sixth positioning hole (8c) is located on a side surface of the second arm (2);

the second steering gear fixing portion (9) has a second fixing hole (9a), and an opening of the second fixing hole (9a) is located on an upper surface of the second arm (2).

4. The rear subframe of claim 1 further comprising: a first tie rod bracket (12) and a second tie rod bracket (13);

the first pull rod bracket (12) is fixedly connected with the first pull rod bracket fixing part (6);

the second pull rod support (13) is fixedly connected with the second pull rod support fixing part (8).

5. The rear sub frame according to claim 4, wherein the first tie rod bracket (12) includes a first bracket body (12a) and a first lug (12b), the first bracket body (12a) being connected to the first tie rod bracket fixing portion (6), the first lug (12b) being located on the first bracket body (12 a);

the second pull rod support (13) comprises a second support body (13a) and a second support lug (13b), the second support body (13a) is connected with the second pull rod support fixing part (8), and the second support lug (13b) is located on the second support body (13 a).

6. The rear subframe of claim 1 wherein said first arm (1) has a first link securing assembly (14) thereon;

the first connecting rod fixing component (14) comprises a first connecting rod fixing part (14a), a second connecting rod fixing part (14b) and a third connecting rod fixing part (14 c);

the first connecting rod fixing part (14a) and the second connecting rod fixing part (14b) are positioned on one side of the first arm (1) departing from the second arm (2), and the third connecting rod fixing part (14c) is positioned on the upper surface of the first arm (1).

7. The rear subframe of claim 1 wherein said second arm (2) has a second link securing assembly (15) thereon;

the second connecting rod fixing component (15) comprises a fifth connecting rod fixing piece (15a), a sixth connecting rod fixing piece (15b) and a seventh connecting rod fixing piece (15 c);

the fifth connecting rod fixing piece (15a) and the sixth connecting rod fixing piece (15b) are located on one side, away from the first arm (1), of the second arm (2), and the seventh connecting rod fixing piece (15c) is located on the upper surface of the second arm (2).

8. The rear subframe of claim 1 further including a motor mount assembly (16);

the motor fixing assembly (16) comprises a first motor fixing part (16a), a second motor fixing part (16b) and a third motor fixing part (16 c);

the first motor mount (16a) is located on a side of the first beam (3) facing the second beam (4); a first portion of the second motor mount (16b) is located on a side of the first arm (1) facing the second arm (2), and a second portion of the second motor mount (16b) is located on an upper surface of the third beam (5); the third part of the third motor fixing part (16c) is positioned on one side of the second arm (2) facing the first arm (1), and the fourth part of the third motor fixing part (16c) is positioned on the upper surface of the third beam (5).

9. The rear subframe of claim 1 wherein said first arm (1), said second arm (2), said first beam (3), said second beam (4) and said third beam (5) are all made of aluminum alloy.

10. A vehicle comprising a rear sub-frame according to any one of claims 1 to 9.

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