A mounting structure for powertrain and automobile

Abstract

The present invention relates to the field of automobile design and manufacturing, and in particular to a mounting structure for a powertrain and an automobile. The mounting structure includes two longitudinal beams, two torsion boxes, and a suspended rear cross beam; the two longitudinal beams are spaced apart in the Y direction, the two torsion boxes are respectively connected to the corresponding longitudinal beams and enclose a receiving space together with the two longitudinal beams, and each longitudinal beam is provided with a first mounting hole through the Y direction; the powertrain is mounted on the suspended rear cross beam, the suspended rear cross beam is arranged to be inserted into the receiving space in the Z direction, and the suspended rear cross beam is connected to the two longitudinal beams and the two torsion boxes, and the first mounting hole is used to screw the two longitudinal beams to the powertrain. The mounting structure and automobile provided by the present invention solve the problems of difficulty in integrating the powertrain from the bottom of the vehicle body and the inability of the vehicle body to adapt to different powertrains.

Description

Technical Field

[0001] The invention relates to the field of automobile design and manufacturing, and in particular to a mounting structure for a power assembly and an automobile. Background Art

[0002] With the progress of the times, new energy vehicles have become an important means of transportation in people's daily lives. Among the components of new energy vehicles, the powertrain suspension is a soft connection between the powertrain and the body, which plays a role in support and vibration isolation. The powertrain usually includes left and right side suspensions and a middle suspension.

[0003] At present, the commonly used installation structure of the powertrain and the vehicle body is fixed with Z-direction bolts, and is mostly installed in the Z direction through the powertrain suspension and the mounting bracket. This design is not convenient for the powertrain to be installed as an integrated part from the bottom; at the same time, the powertrain suspension and the vehicle body are usually connected with a welding structure, which cannot be adapted to different powertrains. If welding is used to adapt to different powertrain installations, the weight of the entire vehicle will be larger, which is not conducive to cost control.

[0004] In view of the above problems, the present invention is proposed. Summary of the invention

[0005] In view of the above, the present invention provides an installation structure for a powertrain and a vehicle, aiming to solve the problems in the prior art that when the powertrain and the vehicle body are in the Z direction, the integrated mounting operation is difficult, the suspension of the powertrain adopts a welded structure, which makes it impossible to adapt to different powertrains, the weight of the entire vehicle is large, and it is not conducive to cost control.

[0006] The present invention first provides a mounting structure for a powertrain, the mounting structure comprising two longitudinal beams, two torsion boxes and a suspended rear cross beam;

[0007] Two longitudinal beams are arranged at intervals along the Y direction, two torsion boxes are respectively connected to corresponding longitudinal beams and enclose a receiving space together with the two longitudinal beams, and each longitudinal beam is provided with a first mounting hole penetrating along the Y direction;

[0008] A power assembly is mounted on the suspended rear cross beam, which is arranged to be inserted into the receiving space along the Z direction, and is connected to two longitudinal beams and two torsion boxes, and the first mounting hole is used to screw the two longitudinal beams to the power assembly.

[0009] In an optional solution of the present invention, the rear cross beam of the suspension is provided with a second mounting hole; the power assembly includes a middle suspension and two side suspensions, the middle suspension is installed on the rear cross beam of the suspension through the second mounting hole, and the two longitudinal beams are respectively connected to the two side suspensions through corresponding first mounting holes.

[0010] In an optional solution of the present invention, the number of first mounting holes on each longitudinal beam is at least three; each longitudinal beam is connected to the power assembly through three of the first mounting holes, and the connecting lines of the three first mounting holes connected to the power assembly form a triangle.

[0011] In an optional scheme of the present invention, the longitudinal beam includes a main body and an extension portion, the extension portion protrudes from the main body along the Y direction and is arranged close to the torsion box, and the extension portion is provided with a first connecting hole along the Z direction; the suspended rear cross beam is provided with a first matching hole along the Z direction, and the first matching hole cooperates with the first connecting hole to connect the suspended rear cross beam and the longitudinal beam.

[0012] In an optional solution of the present invention, the torsion box is provided with a second connecting hole along the Z direction, and the suspended rear cross beam is provided with a second matching hole along the Z direction, and the second matching hole cooperates with the second connecting hole to connect the suspended rear cross beam and the torsion box.

[0013] In an optional solution of the present invention, the longitudinal beam also includes a mounting portion, which protrudes from the main body portion along the Y direction and is spaced apart from the extension portion in the X direction, and the mounting portion is provided with a third connecting hole along the Z direction; the mounting structure also includes a front cross beam, which is connected to the longitudinal beam through the third connecting hole.

[0014] In an optional solution of the present invention, the longitudinal beam is also provided with a weight-reducing hole; a through hole is provided through the side wall of the longitudinal beam along the Y direction, and the through hole is used for the transmission shaft of the power assembly to pass through; and the two ends of the suspended rear cross beam are plate-shaped.

[0015] In an optional solution of the present invention, the mounting structure further includes a dash panel assembly, and two ends of the dash panel assembly are respectively connected to two torque boxes.

[0016] In an optional solution of the present invention, the installation structure also includes two energy absorption boxes and an anti-collision beam, each energy absorption box is arranged along the X direction at one end of the longitudinal beam away from the torsion box and connected to the longitudinal beam, and the anti-collision beam is an arc-shaped structure, arranged between the two energy absorption boxes and connected to the two energy absorption boxes.

[0017] The present invention also provides a car, comprising the above-mentioned mounting structure.

[0018] The present invention provides a mounting structure for a powertrain and a vehicle, which have the following beneficial effects:

[0019] By optimizing the design of the mounting structure, the powertrain is designed to be mounted on the suspended rear cross beam, so that the powertrain can be installed on the suspended rear cross beam and then integrated from the bottom. The design of the first mounting holes of the two longitudinal beams allows the powertrain to be fixed in the accommodation space in the Y direction. At the same time, the first mounting holes and the suspension screw connection design of the powertrain allow the mounting structure to be adapted to different powertrains. Replacing the welding structure with the screw connection design is also beneficial to reducing the weight of the entire vehicle and is beneficial to cost control.

[0020] Other features and advantages of the present invention will be further described in the following specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is an overall schematic diagram of an exemplary installation structure provided in an embodiment of the present invention;

[0023] Figure 2 It is an overall schematic diagram of an exemplary installation structure provided in an embodiment of the present invention;

[0024] Figure 3 A bottom view of an exemplary mounting structure provided in an embodiment of the present invention;

[0025] Figure 4 A schematic side view of a longitudinal beam exemplarily provided in an embodiment of the present invention;

[0026] Figure 5 A schematic diagram of the installation of a suspended rear cross beam exemplarily provided in an embodiment of the present invention;

[0027] Figure 6 The module diagram of the automobile provided exemplarily in the embodiment of the present invention is shown in FIG.

[0028] In the above drawings, the components represented by the reference numerals are listed as follows:

[0029] 100. mounting structure; 110. longitudinal beam;

[0030] 120, torsion box; 130, rear suspension beam;

[0031] 140. Accommodating space; 111. First mounting hole;

[0032] 131. second mounting hole; 112. main body;

[0033] 113. extension portion; 115. first connection hole;

[0034] 132, first matching hole; 121, second connecting hole;

[0035] 133. second matching hole; 114. mounting portion;

[0036] 116. third connecting hole; 150. front cross beam;

[0037] 117. Weight-reducing hole; 118. Through hole;

[0038] 160. Front panel assembly; 170. Energy absorption box;

[0039] 180. Anti-collision beam; 1000. Automobile. DETAILED DESCRIPTION

[0040] In order to make the above and other features and advantages of the present invention more clear, the present invention is further described below in conjunction with the accompanying drawings. It should be understood that the specific embodiments given herein are for the purpose of explaining to those skilled in the art and are only exemplary and not restrictive.

[0041] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0042] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0043] The overall inventive concept of this embodiment is to provide a mounting structure 100 for a powertrain and a car 1000. The mounting structure 100 is designed to include two longitudinal beams 110 spaced apart in the Y direction, two torsion boxes 120 and a suspended rear cross beam 130. The suspended rear cross beam 130 is connected between the two longitudinal beams 110. The two longitudinal beams 110 and the two torsion boxes 120 are connected to form a receiving space 140. The powertrain is arranged on the suspended rear cross beam 130. The suspended rear cross beam 130 is inserted into the receiving space 140 along the Z direction so that the powertrain is integrated from the bottom. Considering the fixation of the left and right suspensions of the powertrain, a first mounting hole 111 that penetrates in the Y direction is designed on the side wall of the longitudinal beam 110 so as to fix the powertrain in the Y direction after the Z-up mounting. In order to adapt to different powertrains, the first mounting hole 111 and the suspension of the powertrain are screwed to replace the welding structure in the prior art, so that the mounting structure 100 can adapt to different powertrains.

[0044] It should be noted that the coordinate descriptions such as "X direction, Y direction, Z direction" mentioned in the description of this application are interpreted with reference to the coordinate system of the entire vehicle, that is, the straight line where the front direction of the vehicle is located is the X direction, the axial direction of the front wheels is the Y direction, and the direction perpendicular to the ground is the Z direction, wherein the positive X direction is toward the rear of the vehicle, the negative X direction is toward the front of the vehicle, the positive Z direction is perpendicular to the ground and the negative Z direction is perpendicular to the ground.

[0045] Based on the above general inventive concept, please refer to the installation design. Figure 1 to Figure 6 , Figure 1 It is an overall schematic diagram of an exemplary mounting structure 100 provided in an embodiment of the present invention; Figure 2 It is an overall schematic diagram of an exemplary mounting structure 100 provided in an embodiment of the present invention; Figure 3 A bottom view of a mounting structure 100 exemplarily provided in an embodiment of the present invention; Figure 4 A schematic side view of a longitudinal beam 110 exemplarily provided in an embodiment of the present invention; Figure 5 This is a schematic diagram of the installation of the suspended rear cross beam 130 exemplarily provided in an embodiment of the present invention; Figure 6 The module diagram of the automobile 1000 provided exemplarily in the embodiment of the present invention is shown in FIG.

[0046] The embodiment of the present invention first provides a mounting structure 100 for a powertrain, the mounting structure 100 comprising two longitudinal beams 110, two torsion boxes 120 and a suspended rear cross beam 130;

[0047] Two longitudinal beams 110 are arranged at intervals along the Y direction, and two torsion boxes 120 are respectively connected to the corresponding longitudinal beams 110 and enclose a receiving space 140 together with the two longitudinal beams 110. Each longitudinal beam 110 is provided with a first mounting hole 111 penetrating along the Y direction;

[0048] A powertrain (not shown) is mounted on the suspended rear cross beam 130 , which is arranged to be inserted into the receiving space 140 along the Z direction, and is connected to two longitudinal beams 110 and two torsion boxes 120 , and the first mounting hole 111 is used to screw the two longitudinal beams 110 to the powertrain.

[0049] Each structure is described in detail below.

[0050] In an optional solution of the present embodiment of the invention, the mounting structure 100 includes two longitudinal beams 110, two torsion boxes 120 and a suspended rear cross beam 130; wherein the two longitudinal beams 110 are spaced apart along the Y direction, and the longitudinal beams 110 are provided with first mounting holes 111 penetrating in the Y direction, and the first mounting holes 111 provide fixing points for the left and right side suspensions of the power assembly, and the ends of the two longitudinal beams 110 are respectively connected to the corresponding two torsion boxes 120 to enclose a receiving space 140, and the receiving space 140 provides a layout space for the power assembly; the power assembly is provided on the suspended rear cross beam 130. Assembly, after the power assembly is connected to the suspended rear cross beam 130, it is inserted into the receiving space 140 along the Z direction, and the two ends of the suspended rear cross beam 130 are connected to the two longitudinal beams 110 and the bottom of the two torsion boxes 120. At this time, the left and right suspensions of the power assembly are fixed to the two longitudinal beams 110 in the Y direction through the first mounting holes 111 to realize the Z-direction integrated upper part of the power assembly set on the suspended rear cross beam 130. The design of the first mounting hole 111 allows the longitudinal beam 110 and the power assembly to be screwed in the Y direction, replacing the welding structure to realize the installation structure 100 to adapt to different power assemblies.

[0051] Furthermore, the suspension rear cross beam 130 is provided with a second mounting hole 131 ; the powertrain includes a middle suspension and two side suspensions, the middle suspension is mounted on the suspension rear cross beam 130 through the second mounting hole 131 , and the two longitudinal beams 110 are respectively connected to the two side suspensions through corresponding first mounting holes 111 .

[0052] In an optional solution of the present embodiment of the invention, the suspended rear cross beam 130 is provided with a second mounting hole 131, and the second mounting hole 131 is provided in the middle section of the suspended rear cross beam 130, and is used to connect the middle suspension of the powertrain; the powertrain includes a middle suspension and two side suspensions, the middle suspension is connected to the second mounting hole 131 of the suspended rear cross beam 130, and the two side suspensions are respectively a left suspension and a right suspension, and are respectively screwed to the first mounting holes 111 of the longitudinal beam 110 after the Z-upper part of the powertrain.

[0053] Furthermore, the number of the first mounting holes 111 on each longitudinal beam 110 is at least three; each longitudinal beam 110 is connected to the power assembly through three of the first mounting holes 111 , and the connecting lines of the three first mounting holes 111 connected to the power assembly form a triangle.

[0054] In an optional scheme of the present embodiment of the invention, the first mounting holes 111 are arranged on the inner wall of the longitudinal beam 110, and there are five first mounting holes 111, wherein two first mounting holes 111 are arranged above the other three first mounting holes 111 at intervals, and the three adjacent first mounting holes 111 can form a triangle, and the longitudinal beam 110 is connected to the left and right side suspensions of the powertrain through the three adjacent first mounting holes 111; through the combination of the three adjacent first mounting holes 111 at different positions, the mounting structure 100 can be adapted to different powertrains, thereby improving the degree of commonality of the mounting structure 100.

[0055] Furthermore, the longitudinal beam 110 includes a main body 112 and an extension portion 113, the extension portion 113 protrudes from the main body 112 along the Y direction and is arranged close to the torque box 120, and the extension portion 113 is provided with a first connecting hole 115 along the Z direction; the suspended rear cross beam 130 is provided with a first matching hole 132 along the Z direction, and the first matching hole 132 cooperates with the first connecting hole 115 to connect the suspended rear cross beam 130 and the longitudinal beam 110.

[0056] In an optional scheme of the present embodiment of the invention, the longitudinal beam 110 includes a main body 112 and an extension portion 113. The extension portion 113 is located at the bottom of the main body 112, protrudes from the main body 112 along the Y direction, and is close to one side of the torque box 120. The extension portion 113 is designed with a first connecting hole 115 in the Z direction on the side wall of the torque box 120; the first connecting hole 115 designed on the first extension portion 113 is used to screw one side of the end of the suspended rear cross beam 130; the suspended rear cross beam 130 is provided with a first matching hole 132 along the Z direction, and the first matching hole 132 is provided on one side of the end of the suspended rear cross beam 130, which is used to match the first connecting hole 115, so that the suspended rear cross beam 130 is screwed to the longitudinal beam 110 in the Z direction, so that the powertrain realizes the Z-up component.

[0057] Furthermore, the torque box 120 is provided with a second connecting hole 121 extending through it along the Z direction, and the suspended rear cross beam 130 is provided with a second matching hole 133 extending through it along the Z direction. The second matching hole 133 matches with the second connecting hole 121 to connect the suspended rear cross beam 130 and the torque box 120 .

[0058] In an optional solution of the present embodiment of the invention, the torque box 120 is designed with a second connecting hole 121 extending through it in the Z direction, and the second connecting hole 121 is used for connecting the torque box 120 to the other side of the suspended rear cross beam 130 in the Z direction; the suspended rear cross beam 130 is designed with a second matching hole 133 extending through it in the Z direction, and is arranged on the other side of the suspended rear cross beam 130 relative to the first matching hole 132; through the design of the second matching hole 133 and the second connecting hole 121, the suspended rear cross beam 130 can be screwed to the torque box 120 in the Z direction, so as to realize the Z-direction integrated upper part of the bottom after the powertrain is installed on the suspended rear cross beam 130.

[0059] Furthermore, the longitudinal beam 110 also includes a mounting portion 114, which protrudes from the main body 112 along the Y direction and is spaced apart from the extension portion 113 in the X direction. The mounting portion 114 is provided with a third connecting hole 116 along the Z direction; the mounting structure 100 also includes a front cross beam 150, which is connected to the longitudinal beam 110 through the third connecting hole 116.

[0060] In an optional solution of the present embodiment of the invention, the longitudinal beam 110 also includes a mounting portion 114, which protrudes from the main body 112 in the Y direction and is arranged at the other side of the bottom of the longitudinal beam 110 relative to the extension portion 113. The mounting portion 114 is designed with a third connecting hole 116 passing through in the Z direction. The third connecting hole 116 allows the front cross beam 150 of the mounting structure 100 to be arranged on the mounting portion 114 in the Y direction and connected between the two longitudinal beams 110.

[0061] Furthermore, the longitudinal beam 110 is also provided with a weight-reducing hole 117; a through hole 118 is provided through the side wall of the longitudinal beam 110 along the Y direction, and the through hole 118 is used for the transmission shaft of the power assembly to pass through; and the two ends of the suspended rear cross beam 130 are plate-shaped.

[0062] In an optional solution of the present embodiment of the invention, the side wall of the longitudinal beam 110 is further provided with a weight-reducing hole 117. Under the condition of ensuring the arrangement of the mounting points on the longitudinal beam 110 and the structural strength, the outer side wall of the longitudinal beam 110 is designed with a blind hole for weight reduction, so that the weight of the longitudinal beam 110 can be reduced, which is conducive to lightweighting of the entire vehicle; the side wall of the longitudinal beam 110 is provided with a through hole 118 along the Y direction. The through hole 118 is square and arranged adjacent to the first mounting hole 111, so that the drive shaft of the powertrain can pass through; the two ends of the suspended rear cross beam 130 are plate-shaped, and the first matching hole 132 and the second matching hole 133 are arranged on both sides of the plate-shaped body in the X direction, so that the suspended rear cross beam 130 is tightly fitted with the bottom plane of the longitudinal beam 110 and the torque box 120.

[0063] Furthermore, the mounting structure 100 further includes a dash panel assembly 160 , and two ends of the dash panel assembly 160 are respectively connected to two torque boxes 120 .

[0064] In an optional solution of the present embodiment of the invention, one end of the two torsion boxes 120 away from the longitudinal beam 110 is also connected to the front panel assembly 160, so that the front panel assembly 160, the two torsion boxes 120, the two longitudinal beams 110 and the front cross beam 150 together form a receiving space 140 to provide a layout space for the powertrain after the rear cross beam 130Z is suspended upward.

[0065] Furthermore, the mounting structure 100 also includes two energy absorption boxes 170 and an anti-collision beam 180. Each energy absorption box 170 is arranged along the X-direction at one end of the longitudinal beam 110 away from the torsion box 120 and connected to the longitudinal beam 110. The anti-collision beam 180 is an arc-shaped structure, arranged between the two energy absorption boxes 170 and connected to the two energy absorption boxes 170.

[0066] In an optional solution of the present embodiment of the invention, two energy absorption boxes 170 are connected to one end of the two longitudinal beams 110 away from the torsion box 120 , and the ends of the energy absorption boxes 170 are connected to the arc-shaped anti-collision beams 180 arranged in the Y direction to increase the load resistance strength of the mounting structure 100 .

[0067] The embodiment of the present invention further provides a car 1000 , comprising the above-mentioned mounting structure 100 .

[0068] Those skilled in the art should understand that if the installation structure 100 for a powertrain and the automobile 1000 provided by the embodiments of the present invention are combined and replaced by combining, simply changing, transforming, etc. all or part of the sub-modules involved, such as moving the components; or setting the product they constitute as one piece; or designing it to be detachable; all the combined components can form equipment / devices / systems with specific functions, and using such equipment / devices / systems to replace the corresponding components of the present invention also falls within the protection scope of the present invention.

[0069] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0070] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0071] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0072] In summary, the embodiments of the present invention provide a mounting structure 100 for a powertrain and an automobile 1000, which have the following beneficial effects: by optimizing the design of the mounting structure 100, the powertrain is designed to be mounted on the suspended rear cross beam 130, so that the powertrain can be installed on the suspended rear cross beam 130 and then integrated from the bottom; the design of the first mounting holes 111 of the two longitudinal beams 110 allows the powertrain to be fixed to the accommodating space 140 in the Y direction; at the same time, the first mounting holes 111 and the suspension screw connection design of the powertrain allow the mounting structure 100 to be adapted to different powertrains; and replacing the welding structure with the screw connection design is also beneficial to reducing the weight of the entire vehicle.

[0073] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A mounting structure for a powertrain, characterized in that: The mounting structure includes two longitudinal beams, two torsion boxes and a suspended rear cross beam; The two longitudinal beams are spaced apart along the Y direction, the two torsion boxes are respectively connected to the corresponding longitudinal beams and enclose a receiving space together with the two longitudinal beams, and each longitudinal beam is provided with a first mounting hole penetrating along the Y direction; The power assembly is mounted on the rear suspension beam, the rear suspension beam is arranged to be inserted into the receiving space along the Z direction, and the rear suspension beam is connected to the two longitudinal beams and the two torsion boxes, and the first mounting hole is used to screw the two longitudinal beams to the power assembly; Among them, the first mounting holes on each of the longitudinal beams are arranged on the inner wall of the longitudinal beam, and the number is at least three; each of the longitudinal beams is connected to the power assembly through three adjacent first mounting holes, and the connecting lines of the three first mounting holes connected to the power assembly form a triangle; the side wall of the longitudinal beam is provided with a through hole along the Y direction, and the through hole is used for the transmission shaft of the power assembly to pass through.

2. The mounting structure according to claim 1, characterized in that: The suspended rear cross beam is provided with a second mounting hole; The power assembly includes a middle suspension and two side suspensions. The middle suspension is mounted on the suspension rear cross beam through the second mounting hole, and the two longitudinal beams are respectively connected to the two side suspensions through the corresponding first mounting holes.

3. The mounting structure according to claim 1, characterized in that: The longitudinal beam comprises a main body and an extension portion, wherein the extension portion protrudes from the main body along the Y direction and is arranged close to the torsion box, and the extension portion is provided with a first connecting hole penetrating along the Z direction; The suspended rear cross beam is provided with a first matching hole extending through it along the Z direction, and the first matching hole matches with the first connecting hole to connect the suspended rear cross beam and the longitudinal beam.

4. The mounting structure according to claim 1, characterized in that: The torque box is provided with a second connecting hole extending through it along the Z direction. The suspended rear cross beam is provided with a second matching hole along the Z direction, and the second matching hole cooperates with the second connecting hole to connect the suspended rear cross beam and the torsion box.

5. The mounting structure according to claim 3, characterized in that: The longitudinal beam further includes a mounting portion, the mounting portion protruding from the main body portion along the Y direction and spaced apart from the extension portion in the X direction, and the mounting portion is provided with a third connecting hole penetrating along the Z direction; The mounting structure further includes a front cross beam, and the front cross beam is connected to the longitudinal beam through the third connecting hole.

6. The mounting structure according to claim 3, characterized in that: The longitudinal beam is also provided with a weight-reducing hole; The two ends of the suspended rear cross beam are plate-shaped.

7. The mounting structure according to claim 1, characterized in that: The mounting structure also includes a dash panel assembly, and two ends of the dash panel assembly are respectively connected to the two torque boxes.

8. The mounting structure according to claim 1, characterized in that: The mounting structure also includes two energy absorption boxes and an anti-collision beam. Each energy absorption box is arranged along the X direction at one end of the longitudinal beam away from the torsion box and connected to the longitudinal beam. The anti-collision beam is an arc-shaped structure, arranged between the two energy absorption boxes and connected to the two energy absorption boxes.

9. A car, characterized in that: It comprises the installation structure as claimed in any one of claims 1 to 8.

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