CN116373572A - A front drive suspension system and its assembly method - Google Patents

Abstract

The present invention relates to the field of automobile suspension, in particular to a front drive suspension system and an assembly method thereof, comprising an electric drive unit frame assembly, the electric drive unit frame assembly includes a support frame; the support frame is made of square steel Assembled; the invention discloses a front drive suspension system, the invention reduces the development cost of the support frame, in addition, the invention forms the support frame by assembling square steel, which is easy to produce, easy to control the precision, and also has light weight and low cost low merit.

Description

A front drive suspension system and its assembly method

technical field

The invention relates to the field of automobile suspension, in particular to a front drive suspension system and an assembly method thereof.

Background technique

The structural size of the integrated motor used in new energy vehicles is generally smaller than that of traditional fuel engines. If the layout and installation method of the fuel vehicle suspension bracket installed on the body longitudinal beam are still followed, the horizontal span of the suspension bracket will be large, and the suspension size will be reduced. Large, heavy, high cost, and difficult to guarantee strength; in addition, the front cabin of existing vehicles needs to arrange high and low voltage electrical appliances or piping parts, cooling water pumps and other components, but there is no fixed point to use.

To solve this problem, there are currently two options:

First, the frame-type sub-frame is adopted; the suspension connection motor is directly connected and fixed to the front beam of the frame-type sub-frame. Although this connection method can realize the installation of the integrated motor, it will lead to the number and complexity of the sub-frame molds Increase, production cost and unit cost of product rise sharply;

Second, the front compartment is equipped with an electric drive unit frame assembly that is connected to the frame beam structure of the left and right longitudinal beams of the vehicle body and provides a relatively close installation point for the suspension. Drive unit frame assembly.

The solution using the electric drive unit frame assembly has an excellent use effect;

However, there may still be the following problems in the actual implementation:

1. The frame assembly of the electric drive unit is formed by gravity casting of aluminum material. The advantages of this structure are light weight, high modulus, high machining accuracy, and no need for anti-corrosion treatment. The installation point requires post-processing and other reasons, resulting in higher costs;

2. The frame assembly of the electric drive unit is formed by stamping and welding, and the surface is treated with electrophoretic black paint for anticorrosion in the later stage. Compared with the cast aluminum structure, the cost is lower, but the disadvantages of heavy weight and high mold cost are also obvious;

For example, patent CN201821902433.6 a powertrain bearing structure and CN201810130439.4 a suspension system and electric vehicles.

Therefore, it is necessary to optimize the design of the existing electric drive unit frame assembly to provide a drive unit frame assembly with low cost and easy production.

Contents of the invention

The object of the present invention is to provide a low-cost and easy-to-produce frame assembly of an electric drive unit.

In order to achieve the above object, the technical scheme adopted in the present invention is:

A front drive suspension system, including an electric drive unit frame assembly,

The electric drive unit frame assembly includes a support frame; the support frame is assembled from square steel.

The support frame includes two longitudinal square steels, and a plurality of connecting square steels are arranged between the two longitudinal square steels; the longitudinal square steels and the connecting square steels are provided with a plurality of mounting threaded holes; the longitudinal square steels The steel ends are provided with mounting connection holes.

The frame assembly of the electric drive unit is provided with a soft pad assembly; the soft pad assembly includes a welding bracket connected to a support arm, and the support arm is provided with die-casting bolts.

The die-casting bolts are embedded in the support arm; the support arm is provided with a limiting protrusion.

The welding bracket includes a connecting sleeve, the two sides of the connecting sleeve are provided with connecting side plates, and the end of the connecting sleeve is provided with an end side plate, and the vertical section of the connecting side plate and the end side plate is inverted L-shaped ; The end side panels are connected with the connecting side panels and the support frame.

The drive unit frame assembly is provided with two cushion assemblies, one cushion assembly is connected with the left suspension bracket assembly, and the other cushion assembly is connected with the right suspension bracket assembly.

The front suspension system also includes a rear suspension cushion assembly; the rear suspension cushion assembly includes a rear suspension framework; and a second connection part is provided in the subsequent suspension framework.

The side of the rear suspension frame is provided with an anti-collision pad; the anti-collision pad is arranged on the side of the second connecting part and the rear suspension frame.

A method for assembling a front drive suspension system, the method for assembling comprises the steps of:

Step 1: Determine the components of the front drive suspension system;

Step 2: After step 1 is completed, set two cushion assemblies on the electric drive unit frame assembly to form the first sub-assembly assembly; The cushion assembly is assembled with the corresponding integrated motor to form the second subassembly;

Step 3: After step 2 is completed, assemble the first sub-assembly and the second sub-assembly together; so far, a front-wheel drive suspension system has been assembled.

After the step 3 is completed, the front drive suspension system is assembled on the whole vehicle through the installation connecting hole.

The advantages of the present invention are:

The invention discloses a front drive suspension system. The invention reduces the development cost of the support frame. In addition, the invention forms the support frame by assembling square steel, which is easy to produce, easy to control the precision, and also has the advantages of light weight and low cost.

Description of drawings

The content expressed in each accompanying drawing of the description of the present invention and the marks in the figure are briefly described below:

Figure 1 is a schematic diagram of the structure and assembly of the front drive suspension system;

Fig. 2 is a schematic structural diagram of the electric drive unit frame assembly;

Fig. 3 is a schematic structural diagram of the left (right) suspension cushion assembly;

Figure 4 is a schematic diagram of cooperation between the die-casting bolts of the left (right) suspension cushion assembly and the support arm bracket;

Fig. 5 is a schematic cross-sectional view of the cooperation between the inner tube of the left (right) suspension cushion assembly and the rubber main spring;

Figure 6 is a schematic diagram of the assembly limit of the left (right) suspension cushion assembly bracket arm and the inner tube;

Figure 7 is a schematic diagram of the assembly of the left suspension cushion assembly and the left suspension bracket;

Figure 8 is a schematic diagram of the assembly of the right suspension cushion assembly and the right suspension bracket;

Fig. 9 is a schematic structural diagram of the rear suspension cushion assembly;

Labeled in the figure:

1. Electric drive unit frame assembly; 2. Left suspension cushion assembly; 3. Left suspension bracket assembly; 4. Right suspension cushion assembly; 5. Right suspension bracket assembly; 6. Rear Suspension cushion assembly, 2-1, die-casting bolts; 2-2, support arm; 2-3, first inner tube; 2-4, first rubber main spring; 2-5, first outer tube; 2 -6. Welded bracket, 6-1. Rear suspension cartilage; 6-2. Second inner tube; 6-3. Second rubber main spring; 6-4. Second outer tube; 6-5 Crash pad .

Detailed ways

The specific implementation manner of the present invention will be described in further detail below by describing the best embodiment with reference to the accompanying drawings.

A front drive suspension system, including an electric drive unit frame assembly 1, the electric drive unit frame assembly 1 includes a support frame 10-10; the support frame 10-10 is assembled from square steel; the invention discloses A front drive suspension system. The invention reduces the development cost of the support frame 10-10. In addition, the invention forms the support frame 10-10 by assembling square steel, which is easy to produce, easy to control the precision, and also has the advantages of light weight and low cost. advantage.

Specifically, the front drive suspension system disclosed in the present invention mainly includes an electric drive unit frame assembly 1, and in the present invention, the electric drive unit frame assembly 1 includes a support frame 10-10; the support frame 10-10 is made of square steel Assembled; based on such a setting, the electric drive unit frame assembly 1 disclosed in the present invention has a simple structure, easy production, easy control of precision, light weight and low cost.

Further, in the present invention, the support frame 10-10 includes two longitudinal square steels 10-1, and the two longitudinal square steels 10-1 are the main structure of the support frame 10-10, ensuring the support frame 10-10 Overall structural strength, in addition, in the present invention, be provided with a plurality of connecting square steels 10-2 between two longitudinal square steels 10-1; The overall structural strength of -10 facilitates the connection between the two longitudinal square steels 10-1 at the same time; Install threaded holes; the setting of the installed threaded holes facilitates the subsequent connection between the support frame 10-10 and the cushion assembly 4-2. In addition, the end of the longitudinal square steel 10-1 in the present invention is equipped with Connecting hole: The setting of the installation connecting hole facilitates the connection of the subsequent front drive suspension system on the vehicle.

Further, in the present invention, the electric drive unit frame assembly 1 is provided with a cushion assembly 4-2; the setting of the cushion assembly 4-2 facilitates the connection between the integrated motor and the support frame 10-10. connection, and then facilitate the assembly operation of the follow-up integrated motor. In addition, the cushion assembly 4-2 in the present invention includes a welding bracket 2-6, and the setting of the welding bracket 2-6 facilitates the installation of the cushion assembly 4-2. The connection with the support frame 10-10, at the same time, the welding bracket 2-6 in the present invention is connected with the bracket arm 2-2, and the bracket arm 2-2 plays a bridging role, which facilitates the subsequent connection of the left and right suspension brackets Simultaneously, die-casting bolts 2-1 are provided on the support arm 2-2 in the present invention; the setting of die-casting bolts 2-1 facilitates the follow-up of the cushion assembly 4-2 with the left suspension bracket assembly 3 or Connection between 5 right suspension bracket assemblies.

Further, in the present invention, the die-casting bolt 2-1 is embedded inside the bracket arm 2-2; such an arrangement facilitates the connection between the die-casting bolt 2-1 and the bracket arm 2-2. In addition, in the present invention The support arm 2-2 is provided with a limit projection 2-21; the limit projection 2-21 plays a very good role in limiting the relative position of the first connecting part 21-12 and the support arm 2-2. The location is limited.

Further, in the present invention, the welding bracket 2-6 includes a connecting sleeve 2-61, and the connecting sleeve 2-61 is an assembly set, which facilitates the connection between the first connecting part 21-12 and the support arm 2-2 in the connecting sleeve. 2-61; in addition, as a greater optimization, the two sides of the connecting sleeve 2-61 in the present invention are provided with connecting side plates 2-62, and the two connecting side plates 2-62 play a very important role. A good bridging effect facilitates the connection between the longitudinal square steel 10-1 and the welding. At the same time, an end side plate 2-63 is provided at the end of the connecting sleeve 2-61, and the connecting side plate 2-62 And the vertical section of the end side plate 2-63 is inverted L-shaped; the end side plate 2-63 is connected with the connecting side plate 2-62 and the supporting frame 10-10; the end side plate 2-63 is connected with the connecting The square steel 10-2 is connected. Based on this setting, there are multiple connections between the support frame 10-10 and the welding support 2-6, which greatly ensures the connection between the welding support 2-6 and the support frame 10-10. connection stability.

Further, in the present invention, the drive unit frame assembly is provided with two cushion assemblies 4-2, one cushion assembly 4-2 is connected with the left suspension bracket assembly 3, and the other cushion assembly 4-2 is connected with a right suspension bracket assembly 5; the present invention uses the above design so that during subsequent use, one cushion assembly 4-2 is connected to one end of the integrated motor through the left suspension bracket assembly 3, and the other The cushion assembly 4-2 is connected to the other end of the integrated motor through the right suspension bracket assembly 5, and through such an arrangement, a stable connection between the integrated motor and the supporting frame 10-10 can be realized.

Further, in the present invention, the front drive suspension system also includes a rear suspension cushion assembly 6; the rear suspension cushion assembly 6 includes a rear suspension framework 6-1; There is a second connection part; in the present invention, the rear suspension cushion assembly 6 is also a connection structure; it is mainly used for the connection between the sub-frame and the integrated motor.

Further, in the present invention, the side of the rear suspension frame 6-1 is provided with a crash pad 6-5; the crash pad 6-5 is arranged on the side of the second connection part and the rear suspension frame 6-1 ; The crash pad 6-5 here plays a very good protective role; avoiding interference between the subsequent rear suspension frame 6-1 and adjacent components during use.

A method for assembling a front drive suspension system, the method for assembling comprises the steps of:

Step 1: Determine the components of the front drive suspension system;

Step 2: After step 1 is completed, set two cushion assemblies 4-2 on the electric drive unit frame assembly 1 to form the first subassembly assembly; 5 and the rear suspension cushion assembly 6 are assembled with the corresponding integrated motor to form the second subassembly;

Step 3: After step 2 is completed, assemble the first sub-assembly and the second sub-assembly together; so far, a front-wheel drive suspension system has been assembled.

The present invention facilitates the assembly and assembly of the front drive suspension system through the above assembly method.

Further, after step 3 in the present invention is completed, the front-drive suspension system is assembled on the vehicle through the installation connection hole; through such an assembly method, the connection and assembly of the front-drive suspension system on the vehicle is facilitated.

specific:

The invention discloses a front drive suspension system, which comprises an electric drive unit frame assembly 1, a left suspension cushion assembly 3, a left suspension bracket assembly 3, and a right suspension cushion assembly 4 , Right suspension bracket assembly 5 and rear suspension cushion assembly 6.

In specific implementation:

It is required that the left suspension cushion assembly 3 and the right suspension cushion assembly 4 in the invention be respectively connected and fixed by using bolts to pass through the installation holes on them and the welded threaded installation steel sleeves on the electric drive unit frame assembly 1;

At the same time, use bolts to pass through the mounting holes on the left suspension bracket assembly 3, the right suspension bracket assembly 5 and the rear suspension cushion assembly 6 to connect and fix them with the integrated motor to be installed to form a whole;

Pass the bolts reserved on the left suspension cushion assembly 3 and the right suspension cushion assembly 4 on the sub-assembly obtained in the first step above through the left suspension bracket on the sub-assembly obtained in the second step Assembly 3, the mounting hole of the right suspension bracket assembly 5, and then use nuts to connect and fix the left and right suspension cushion assembly 4 and the left and right suspension bracket assembly 5 from below, so that the above-mentioned six parts and The integrated motor forms an assembly.

Finally, the final assembly is placed on the left and right longitudinal beams of the front cabin body as a whole, and is connected and fixed through four bolts through the casing welded at the four corners of the electric drive unit frame assembly 1 and the longitudinal beams of the vehicle body. The nut connects and fixes the rear suspension cushion assembly 6 with the suspension installation bracket welded on the rear subframe; thus, the front drive suspension system and the motor are assembled.

Due to the vibration isolation requirements of the suspension system, the shock-absorbing material needs to use elastic rubber materials;

Based on the above-mentioned design, the front drive suspension system disclosed by the present invention solves the problem that the front cabin space is large but the subframe is difficult to be newly developed; the difficult problem that the suspension cannot be designed; The structure is compact, the weight is light, and the strength is easy to guarantee; moreover, when the present invention is actually implemented, the front drive suspension system together with the integrated motor can be integrated on-line to improve the production efficiency of the final assembly; what is more, the electric drive unit frame assembly 1 of the present invention The support frame 10-10 is assembled with square steel, so that the electric drive unit frame assembly 1 of the present invention is simple in structure, easy to produce, easy to control precision, light in weight, and low in cost; There are multiple connection points, which can provide installation points for high and low voltage electrical appliances or pipeline parts, cooling water pumps and other components arranged in the front cabin during subsequent use; 4-2, but in a symmetrical arrangement, such an arrangement makes the left suspension cushion assembly 3 and the right suspension cushion assembly 4 interchangeable, saving mold development, product management and other production costs, Reduce the unit cost; the above-mentioned left suspension cushion assembly 3 or right suspension cushion assembly 4 disclosed in the present invention is exactly the above-mentioned cushion assembly 4-2; here form the left suspension cushion assembly 3 or the right suspension cushion assembly The suspension cushion assembly 4 has different names only because of the different layout positions of the cushion assembly 4-2.

Specifically, the front drive suspension system disclosed in the present invention mainly includes an electric drive unit frame assembly 1, a cushion assembly 4-2 (according to different layout positions, it can be called the right suspension cushion assembly 4 and the left suspension cushion assembly 4-2 respectively). Pad assembly 3), left suspension bracket assembly 3, right suspension bracket assembly 5, and rear suspension cushion assembly 6.

The electric drive unit frame assembly 1 includes a supporting frame 10-10, and the supporting frame 10-10 includes square steels of different specifications to respectively form a beam (connecting square steel 10-2) and a longitudinal beam (longitudinal square steel 10-1), battery installation Bracket, small bending parts are welded to form the water pump bracket, and there are different types of connection holes 101 on it according to requirements for installation and fixing of wire harness clips, embedded rivet nuts or rivet studs for electrical components or heat The management parts are installed and fixed, and the threaded steel sleeve is welded for the installation and fixation of the left (right) suspension cushion assembly 4-2; the steel sleeve with a smooth inner hole is used for connecting and fixing with the longitudinal beam of the vehicle body.

The following is the forming process of a part:

Electric drive unit frame assembly 1;

The main body is welded and formed from a number of square steels of different specifications and small bending parts, and then small round holes or long round holes are made on it according to the requirements for fixing the wire harness clips; it is installed on the electric drive unit frame assembly 1 as required Select or process the corresponding rivet nuts, rivet screws, projection welding nuts, threaded steel sleeves and light hole steel sleeves according to the requirements of the fixed point specifications of the parts, and combine the above parts with the above frame body in the form of welding or rivet Connection molding.

In the present invention, the threaded steel sleeve is an internal hollow casing structure. In the present invention, the above-mentioned installation threaded hole is actually a hole set on the support frame 10-10, and a threaded steel sleeve is embedded in the hole, thereby forming the above-mentioned Threaded holes are installed; in the same way, the light-hole steel sleeve is also an internal hollow casing structure; the light-hole steel sleeve is embedded in the hole on the support frame 10-10; finally the above-mentioned installation connection hole is formed; the present invention uses threaded steel The setting of the sleeve and the light hole steel sleeve greatly guarantees the strength of the installation threaded hole and the installation connection hole.

Cushion assembly 4-2

The die-casting bolt 2-1 and the support arm 2-2 are directly formed into an integrated structure through pressure casting, and in order to ensure that the die-casting bolt 2-1 does not come out of the support arm 2-2, the bolt with a hexagonal head is specially selected so that it can be used When one-piece die-casting, the hexagonal head is completely inside the structure of the support arm 2-2, which meets the need for anti-dropping. The anti-off design is shown in Figure 4;

The first connecting part 21-12 includes a first suspension inner tube 2-3, a first rubber main spring 2-4 and a first suspension outer tube 2-5; in the present invention, the first suspension inner tube 2-3 1. The first rubber main spring 2-4 and the first suspension outer tube 2-5 are combined into a whole through vulcanization; the inner tube of the first connecting part 21-12 is different from the traditional exposed one, but is designed to The structure that the tube is completely wrapped by the rubber main spring;

The welding bracket 2-6 is a suspension cushion assembly 4-2 welding bracket 2-6 formed by welding a plurality of small stamping parts;

The sub-parts formed by the above three steps are pressed into the welding bracket 2-6 of the suspension cushion assembly 4-2 through the press-fitting equipment, and then the supporting arm 2-2 is pressed into the above-mentioned bushing The production of parts is completed in the inner tube. superior

In the second step, the design that the inner tube is completely wrapped by rubber plays an interference fit when the support arm 2-2 is pressed into the inner tube, making it more tightly pressed, and can avoid the support arm 2-2 in the actual vehicle application. There may be frictional noise when there is relative movement with the inner tube.

Left (right) suspension bracket assembly

The molding process of the left and right suspension brackets is exactly the same, but the structure is different, mainly a plate bracket structure; in actual production, after the main structure is formed by casting, secondary processing is performed on the mounting holes 3-5 or the mounting surface. To ensure positioning, installation and flatness requirements.

Rear suspension cushion assembly 6

The molding process of the rear suspension frame 6-1 is the same as that of the above-mentioned left and right suspension bracket assemblies 5, and will not be repeated here;

The second connecting part includes a second suspension inner tube 6-2, a second rubber main spring 6-3 and a second suspension outer tube 6-4; in the present invention, the second suspension inner tube 6-2, the second The rubber main spring 6-3 and the suspended second outer tube 6-4 form an integral structure through vulcanization;

The crash pad 6-5 is a rubber vulcanized part, and the overall rubber has no metal material;

The sub-parts formed by the above three steps are press-fitted with the second connecting part and the rear suspension frame through the press-fitting equipment, and then the two anti-collision pads 6-5 are respectively placed on the two ends of the inner tube, in order to ensure And if it falls off during the installation process and causes loss that affects the anti-collision function, you can consider dispensing to stick it to the second connecting part.

a. Subassembly of left (right) suspension cushion assembly 4-2 and electric drive frame assembly:

Use bolts to pass through the four mounting holes on the left (right) suspension cushion assembly 4-2 and the threaded steel sleeve on the frame assembly 1 of the electric drive unit (1-1 to 1-8 of reference signs are all threads cylinder liner) to complete the subassembly of the left and right suspension cushion assembly 4 and the frame of the electric drive unit;

b. Subassembly of left and right suspension bracket assembly 5, rear suspension cushion assembly 6 and integrated motor:

Use bolts to pass through the three mounting holes on the side of the left suspension bracket assembly 3 and connect to the corresponding threaded holes on the integrated motor;

Use bolts to pass through the two mounting holes on the side of the right suspension bracket assembly 5 and the two upper mounting holes to connect with the corresponding threaded holes on the integrated motor;

Use bolts to pass through the three mounting holes on the side of 6-rear suspension cushion assembly 6 and a mounting auxiliary hole at the rear end to connect and fix with the corresponding threaded holes on the integrated motor.

c. Combine the sub-assemblies formed by the above two steps:

The subassembly structure formed by connecting the left and right suspension cushion assemblies 4 and the electric drive unit frame assembly 1 is connected with the left and right suspension bracket assemblies 5, the rear suspension cushion assembly 6 and the integrated motor When the subassembly structure is combined, the die-casting bolts 2-1 on the left and right suspension cushion assemblies 4 are respectively inserted into the top two mounting holes of the left and right suspension brackets, and the nuts are used to lock the bottom respectively, as As shown in Figure 7 and Figure 8, the assembly of the front drive suspension system has been completed;

d. Front drive suspension system and vehicle assembly:

Hoist the above-mentioned front-drive suspension system as a whole and drop it into the front cabin of the whole vehicle to be located on the left and right longitudinal beams of the vehicle body, and use bolts to pass through the installation connection holes on the frame assembly 1 of the electric drive unit (reference number 1 -9 to 1-12 are installation connection holes) are connected and fixed with the pre-embedded installation nuts on the left and right longitudinal beams of the vehicle body;

Use bolts to pass through the suspension inner tube 6-2 on the rear suspension cushion assembly 6 to connect with the suspension installation point on the sub-frame that has been installed on the vehicle body, and lock the other end with a nut;

Until the assembly of the front-drive suspension system and the vehicle is completed.

By the above design;

Know;

The present invention has the following advantages:

Reduce development costs and unit costs;

Provide installation and fixing points for components and various pipelines arranged in the front cabin;

Do not develop casting molds and large stamping molds, reducing development costs;

Use square steel welding forming method with lower unit price and simple production process to reduce unit cost.

The suspension system is designed with an electric drive unit frame assembly 1 to provide a closer installation point for the suspension, reduce the suspension structure, reduce product materials, and improve structural strength;

The electric drive unit frame assembly 1 can add installation points or weld small installation brackets according to requirements to meet the installation and fixing requirements of other components;

Use easy-to-obtain standard square steel for welding to form the main structure, use standard rivet nuts, rivet screws or projection welding nuts as a solution for installation and fixation, do not develop non-standard parts, shorten the development cycle, and reduce development costs and unit cost;

The main processes are cutting, welding, bending, riveting and electrophoresis. The technology is mature and the supplier can be selected from a wide range.

Apparently, the specific implementation of the present invention is not limited by the above methods, as long as various insubstantial improvements are made by adopting the method concept and technical solutions of the present invention, they all fall within the protection scope of the present invention.

Claims (10)

1. A front drive suspension system, characterized in that it comprises an electric drive unit frame assembly, The electric drive unit frame assembly includes a support frame; the support frame is assembled from square steel. 2. A front drive suspension system according to claim 1, wherein the support frame comprises two longitudinal square steels, and a plurality of connecting square steels are arranged between the two longitudinal square steels to connect; The longitudinal square steel and the connecting square steel are provided with a plurality of installation threaded holes; the ends of the longitudinal square steel are provided with installation connection holes. 3. A front drive suspension system according to claim 1, wherein a cushion assembly is provided on the frame assembly of the electric drive unit; the cushion assembly includes a welding bracket, and the welding bracket A supporting arm is connected, and die-casting bolts are arranged on the supporting arm. 4 . The front drive suspension system according to claim 3 , wherein the die-casting bolts are embedded in the bracket arm; and the bracket arm is provided with a limiting protrusion. 5 . 5. A front drive suspension system according to claim 3, characterized in that the welding bracket includes a connecting sleeve, connecting side plates are provided on both sides of the connecting sleeve, and end portions of the connecting sleeve are provided with end portions The side panels, the connecting side panels and the end side panels have an inverted L-shaped vertical section; the end side panels are connected to the connecting side panels and the support frame. 6. A front drive suspension system according to claim 3, characterized in that two cushion assemblies are provided on the drive unit frame assembly, and one cushion assembly is connected with the left suspension bracket assembly , the other cushion assembly is connected with the right suspension bracket assembly. 7. A front-drive suspension system according to claim 1, wherein the front-drive suspension system further comprises a rear suspension cushion assembly; the rear suspension cushion assembly comprises a rear suspension framework ; A second connecting portion is provided in the follow-up suspension bone. 8. A front-drive suspension system according to claim 7, characterized in that, a crash pad is provided on the side of the rear suspension frame; the crash pad is arranged between the second connecting portion and the rear suspension frame side. 9. The assembly method of the front suspension system according to any one of claims 1-8, characterized in that the assembly method comprises the following steps: Step 1: Determine the components of the front drive suspension system; Step 2: After step 1 is completed, set two cushion assemblies on the electric drive unit frame assembly to form the first sub-assembly assembly; The cushion assembly is assembled with the corresponding integrated motor to form the second subassembly; Step 3: After step 2 is completed, assemble the first sub-assembly and the second sub-assembly together; so far, a front-wheel drive suspension system has been assembled. 10 . The method for assembling a front drive suspension system according to claim 9 , characterized in that, after step 3 is completed, the front drive suspension system is assembled on the vehicle through the installation connection hole. 11 .

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