New energy vehicle suspension with stress dispersion layout and stress-strain method thereof

Abstract

The application relates to the technical field of automobile suspensions, in particular to a new energy automobile suspension with stress dispersion layout and a stress-strain method thereof, which comprises a subframe, an upper support plate and a lower support plate arranged on the subframe, and a fork arm hinged on the subframe; an upper damping mechanism is symmetrically arranged on the fork arm and connected with the upper support plate; a lower damping mechanism connected with the lower support plate is further arranged on the fork arm; and a hydraulic buffering mechanism is arranged on the lower damping mechanism. When a vehicle passes through a bumpy road section and the fork arm is forced to swing, the upper damping mechanism and the lower damping mechanism can cooperate and uniformly disperse the stress borne by the fork arm to the corresponding upper support plate and lower support plate on the subframe. If the force is large, the lower damping mechanism will also drive the hydraulic buffering mechanism to act, so as to provide the fork arm with hydraulic buffering action and ensure that the wheel is effectively supported.

Description

Technical Field

[0001] This invention relates to the field of automotive suspension technology, specifically to a stress-distributed suspension for new energy vehicles and its stress-strain method. Background Technology

[0002] New energy vehicles are significantly heavier than traditional fuel vehicles due to the large-capacity power battery packs they are equipped with. The increased sprung mass places higher demands on the load-bearing capacity of the suspension system, the strength of the subframe structure, and fatigue durability.

[0003] As a key component connecting the wheels and the vehicle body, the suspension system's core function is to transmit the forces and torques between the wheels and the vehicle body, and to buffer the impact vibrations caused by uneven road surfaces, ensuring the vehicle's ride comfort and handling stability. The subframe, as a key load-bearing component connecting the suspension and the vehicle body, directly affects the overall vehicle reliability due to its structural strength and fatigue durability.

[0004] In existing subframe structures, shock absorbers and suspension arms are usually connected to specific mounting points on the subframe. Alternating impact loads during vehicle operation are transmitted to the subframe through these connection points, resulting in uneven stress distribution in each connection area. Some areas are at risk of fatigue cracking under long-term repeated loading. Currently, improvements to this problem are mostly achieved through local reinforcement or structural reinforcement, but it is difficult to achieve a good balance between lightweighting and load uniformity.

[0005] In addition, to cope with road impacts of varying magnitudes, some suspension systems use a combination of hydraulic shock absorbers and springs, utilizing the damping force generated by the oil passing through the throttle orifice to absorb vibration energy. However, the damping characteristics of hydraulic shock absorbers are mainly determined by the fixed throttle orifice size, making it difficult to achieve continuous and gradual adjustment of the damping force as the impact amplitude changes. Summary of the Invention

[0006] The purpose of this invention is to provide a stress-dispersed suspension for new energy vehicles and a stress-strain method thereof, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A stress-dispersed suspension system for new energy vehicles, comprising:

[0009] A subframe, and an upper support plate and a lower support plate mounted on the subframe, wherein a fork arm is hinged to the subframe;

[0010] Also includes:

[0011] An upper damping mechanism is symmetrically arranged on the fork arm and connected to the upper support plate. A lower damping mechanism connected to the lower support plate is also provided on the fork arm. When the fork arm is subjected to stress, the stress can be distributed to the upper support plate and the lower support plate through the upper damping mechanism and the lower damping mechanism.

[0012] A hydraulic damping mechanism is provided on the lower shock absorber mechanism. The hydraulic damping mechanism can be activated when the lower shock absorber mechanism moves to perform gradual hydraulic damping.

[0013] As a further aspect of the present invention: the upper shock-absorbing mechanism includes a shock-absorbing bracket connected to the fork arm pivot, a support ring connected to the shock-absorbing bracket, a support sleeve hinged to the upper support plate that slides axially on the shock-absorbing bracket, and a first spring sleeved on the shock-absorbing bracket, with the two ends of the first spring abutting against the support sleeve and the support ring respectively.

[0014] As a further embodiment of the present invention: the lower shock absorption mechanism includes a follower plate connected to the fork arm pivot, a support rod connected to the follower plate, and a reinforcing frame connected to the support rod installed on the follower plate;

[0015] It also includes a telescopic component and an elastic component disposed on the lower support plate and connected to the support rod.

[0016] As a further embodiment of the present invention: the telescopic component includes buffer sleeves hinged to the lower support plate and symmetrically distributed, a connecting rod slidably installed inside the buffer sleeve, and the connecting rod is hinged to the support rod.

[0017] As a further embodiment of the present invention: the elastic component includes a fixed ring connected to the buffer sleeve, a limiting ring installed on the connecting rod, and a second spring sleeved on the connecting rod, with the two ends of the second spring abutting against the limiting ring and the fixed ring respectively.

[0018] As a further embodiment of the present invention: the hydraulic buffer mechanism includes a through groove formed on the outer circumferential wall of the buffer sleeve, and a liquid storage pipe connected to the through groove is connected to the buffer sleeve.

[0019] It also includes a driven component and a pushing component disposed within the buffer sleeve and connected to the connecting rod.

[0020] As a further embodiment of the present invention: the driven component includes a movable disk connected to the end of the connecting rod, a movable rod slidably mounted on the movable disk, and a limiting block connected to the end of the movable rod that abuts against the movable disk.

[0021] As a further embodiment of the present invention: the pushing assembly includes a piston disc connected to the end of the movable rod, the piston disc being slidably and sealingly connected to the buffer sleeve, and a sealing tube cooperating with the through groove being connected to the piston disc.

[0022] A stress-strain method for a stress-distributed suspension system in new energy vehicles includes the following steps:

[0023] Step 1: When encountering a bumpy road surface, the fork arm will wobble under stress, causing the upper shock absorption mechanism to move, so as to distribute the stress to the upper support plate;

[0024] Step 2: The fork arm will also drive the lower shock absorption mechanism to move, so as to distribute the stress to the lower support plate;

[0025] Step 3: The upper and lower shock absorption mechanisms work together to allow the fork arm to quickly return to its original position;

[0026] Step 4: When the fork arm is subjected to high stress, the lower shock absorption mechanism will also drive the hydraulic buffer mechanism to act accordingly, so as to provide hydraulic buffering effect.

[0027] Compared with the prior art, the beneficial effects of the present invention are:

[0028] This invention, through the coordinated operation of the upper and lower damping mechanisms, broadens the force transmission path of the fork arm and improves the stress distribution in various connection areas of the subframe. When the fork arm is impacted by a wheel, the upper damping mechanism transmits part of the stress to the upper support plate through the damping bracket and support sleeve, which is then borne by the upper area of ​​the subframe. The lower damping mechanism transmits the remaining stress to the lower support plate through the follower support plate, support rod, connecting rod, and buffer sleeve, which is then borne by the lower area of ​​the subframe. The stress is transmitted to different height areas of the subframe through two independent channels, allowing the load to be shared at multiple support points of the subframe. This improves the phenomenon of local stress concentration and enhances the structural fatigue durability of the subframe.

[0029] When the vehicle experiences minor bumps, the connecting rod displacement is small, the movable disc does not contact the piston disc, and the hydraulic buffer mechanism does not intervene. The suspension is completely absorbed and buffered by the elastic forces of the first and second springs, ensuring a smooth response and ride comfort during minor bumps. During major bumps, the connecting rod displacement increases, the movable disc pushes the piston disc to compress the oil in the buffer chamber, the through-slot area gradually decreases as the sealing tube moves, the oil discharge resistance increases, and the hydraulic pressure in the buffer chamber gradually rises, generating a hydraulic support force that gradually increases with the impact amplitude. This graded response mechanism from spring to hydraulic pressure allows the suspension to provide appropriate support characteristics under different road conditions. Attached Figure Description

[0030] Figure 1This is a schematic diagram of one embodiment of a new energy vehicle suspension with a stress-dispersing layout.

[0031] Figure 2 This is a schematic diagram of another angle structure in one embodiment of a new energy vehicle suspension with a stress-dispersing layout.

[0032] Figure 3 This is a front view schematic diagram of the upper and lower shock absorber mechanism in one embodiment of a new energy vehicle suspension with a stress-dispersing layout.

[0033] Figure 4 This is a front view schematic diagram of the upper shock absorber mechanism in one embodiment of a new energy vehicle suspension with a stress-dispersing layout.

[0034] Figure 5 This is a schematic diagram showing the connection relationship between the upper and lower damping mechanisms in one embodiment of a new energy vehicle suspension with a stress-dispersed layout.

[0035] Figure 6 for Figure 5 A magnified schematic diagram of the structure at point A in the middle.

[0036] Figure 7 This is a schematic diagram of the upper shock absorber mechanism in one embodiment of a new energy vehicle suspension with a stress-dispersing layout.

[0037] Figure 8 This is a schematic diagram of the lower shock absorber mechanism in one embodiment of a new energy vehicle suspension with a stress-dispersing layout.

[0038] Figure 9 This is a cross-sectional schematic diagram of the lower shock absorber mechanism in one embodiment of a stress-dispersed suspension system for new energy vehicles.

[0039] Figure 10 This is an exploded structural diagram of the upper and lower shock absorber mechanism in one embodiment of a stress-dispersed suspension system for new energy vehicles.

[0040] In the diagram: 1. Subframe; 2. Upper support plate; 3. Lower support plate; 4. Fork arm; 5. Shock absorber bracket; 501. Support ring; 6. Support sleeve; 7. First spring; 8. Buffer sleeve; 801. Through groove; 9. Fixing ring; 10. Movable disc; 11. Connecting rod; 12. Limiting ring; 13. Second spring; 14. Follower support plate; 1401. Support rod; 15. Reinforcing frame; 16. Movable rod; 1601. Limiting block; 17. Piston disc; 18. Sealing tube; 19. Liquid reservoir tube. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] Furthermore, elements in this invention are referred to as being "fixed to" or "set on" another element, which may be directly on the other element or may also include an intervening element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or may also include an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0043] Please see Figures 1-10 In this embodiment of the invention, a stress-distributed suspension for a new energy vehicle includes:

[0044] Subframe 1, and upper support plate 2 and lower support plate 3 disposed on subframe 1, wherein a fork arm 4 is hinged on subframe 1;

[0045] Also includes:

[0046] An upper damping mechanism is symmetrically arranged on the fork arm 4 and connected to the upper support plate 2. The fork arm 4 is also provided with a lower damping mechanism connected to the lower support plate 3. When the fork arm 4 is subjected to stress, the stress can be distributed to the upper support plate 2 and the lower support plate 3 through the upper damping mechanism and the lower damping mechanism.

[0047] A hydraulic damping mechanism is provided on the lower shock absorber mechanism. The hydraulic damping mechanism can be activated when the lower shock absorber mechanism moves to perform gradual hydraulic damping.

[0048] Specifically, new energy vehicles, due to the installation of batteries, are typically quite heavy. This necessitates the suspension providing sufficient support and shock absorption. When the vehicle travels over bumpy roads, the wheels will bounce, transferring stress to the fork arm 4. The fork arm 4 then sways around its hinge point. With the coordinated action of the upper and lower shock absorber mechanisms, the stress on the fork arm 4 is transferred to the upper support plate 2 and the lower support plate 3, thereby dispersing the stress and preventing stress concentration that could lead to direct impact on the suspension and damage to the subframe 1. Simultaneously, the upper and lower shock absorber mechanisms guide the fork arm 4 to quickly return to its original position, suppressing vehicle bounce and improving passenger comfort. If the road surface is uneven, the sway angle of the fork arm 4 will also increase, increasing the travel of the upper and lower shock absorber mechanisms. The lower shock absorber mechanism will then drive the hydraulic buffer mechanism, gradually increasing the hydraulic support force to further support the fork arm 4, thus ensuring normal vehicle operation.

[0049] Please see Figure 1 , Figure 2 , Figure 4 , Figure 7 The upper shock absorption mechanism includes a shock absorption bracket 5 connected to the rotating shaft of the fork arm 4. A support ring 501 is connected to the shock absorption bracket 5. A support sleeve 6 that is hinged to the upper support plate 2 is slidably mounted on the shock absorption bracket 5. A first spring 7 is sleeved on the shock absorption bracket 5. The two ends of the first spring 7 abut against the support sleeve 6 and the support ring 501, respectively.

[0050] Please see Figures 1-3 , Figure 5 , Figure 6 , Figures 8-10 The lower shock absorption mechanism includes a follower plate 14 connected to the pivot of the fork arm 4, a support rod 1401 connected to the follower plate 14, and a reinforcing frame 15 connected to the support rod 1401 mounted on the follower plate 14; it also includes a telescopic component and an elastic component disposed on the lower support plate 3 and connected to the support rod 1401. The telescopic component includes a buffer sleeve 8 hinged to the lower support plate 3 and symmetrically distributed, a connecting rod 11 slidably installed inside the buffer sleeve 8, the connecting rod 11 being hinged to the support rod 1401, and the elastic component including a fixing ring 9 connected to the buffer sleeve 8, a limit ring 12 mounted on the connecting rod 11, and a second spring 13 sleeved on the connecting rod 11, the two ends of the second spring 13 abutting against the limit ring 12 and the fixing ring 9 respectively.

[0051] In detail, the upper support plate 2 and the lower support plate 3 are respectively set at the upper and lower ends of the subframe 1 and are distributed in the front and back. With the cooperation of the upper support plate 2 and the lower support plate 3, when the stress is transmitted to the subframe 1, it can be evenly distributed at multiple support points of the subframe 1, thereby avoiding stress concentration and increasing the service life of the subframe 1.

[0052] In the initial state, the car is not subjected to any force, and the angle between the fork arm 4 and the subframe 1 is at its maximum. At this time, the shock absorber bracket 5 is inserted into the support sleeve 6, and under the action of the support ring 501, the first spring 7 is in a pre-compressed state, thereby providing the shock absorber bracket 5 with a thrust in the direction away from the support sleeve 6. The connecting rod 11 is also inserted into the buffer sleeve 8, and under the action of the fixing ring 9 and the limiting ring 12, the second spring 13 is also in a pre-compressed state. Through the cooperation of the first spring 7 and the second spring 13, the fork arm 4 provides a supporting force to counteract the vehicle's own weight.

[0053] When the vehicle encounters a bumpy road, the wheels bounce, transmitting the impact force to the fork arm 4. The fork arm 4 swings around its hinge point with the subframe 1, causing the shock absorber bracket 5 to move synchronously. This causes the shock absorber bracket 5 to slide towards the support sleeve 6, compressing the first spring 7 through the support ring 501. At this time, the stress on the fork arm 4 is transmitted to the upper support plate 2 through the shock absorber bracket 5 and the support sleeve 6, and then distributed by the upper support plate 2 to the upper area of ​​the subframe 1.

[0054] At the same time, the sway of the fork arm 4 causes the follower plate 14 to move. Under the synergistic action of the reinforcing frame 15 and the support rod 1401, the connecting rod 11 slides toward the buffer sleeve 8 and compresses the second spring 13 through the limiting ring 12 and the fixing ring 9. At this time, the stress on the fork arm 4 is transmitted to the lower support plate 3 through the follower plate 14, the support rod 1401, the connecting rod 11 and the buffer sleeve 8, and then distributed by the lower support plate 3 to the lower area of ​​the subframe 1.

[0055] Through the synergistic effect of the upper and lower shock absorption mechanisms, the impact stress on the fork arm 4 is simultaneously transmitted to two different support points, the upper support plate 2 and the lower support plate 3, so that the stress is evenly distributed on the subframe 1, effectively avoiding the structural fatigue or local damage caused by the stress always being concentrated at a single point of action, and significantly improving the durability of the subframe 1 and the reliability of the whole vehicle suspension system.

[0056] When the impact stress cancels out the supporting force provided by the first spring 7 and the second spring 13, the first spring 7 and the second spring 13 are quickly and elastically released, pushing the shock absorber bracket 5 and the connecting rod 11 to reset respectively, thereby guiding the fork arm 4 to quickly return to the initial equilibrium position. This rapid reset process quickly suppresses the vehicle's bouncing, reduces unnecessary body sway, and effectively improves driving comfort and driving stability.

[0057] Please see Figure 9 , Figure 10 The hydraulic buffer mechanism includes a through groove 801 formed on the outer circumference of the buffer sleeve 8, and a liquid storage pipe 19 connected to the through groove 801 on the buffer sleeve 8; it also includes a driven component and a pushing component disposed inside the buffer sleeve 8 and connected to the connecting rod 11. The driven component includes a movable disk 10 connected to the end of the connecting rod 11, a movable rod 16 slidably mounted on the movable disk 10, and a limiting block 1601 that abuts against the movable disk 10 connected to the end of the movable rod 16. The pushing component includes a piston disk 17 connected to the end of the movable rod 16, the piston disk 17 being slidably and sealingly connected to the buffer sleeve 8, and a sealing pipe 18 that cooperates with the through groove 801 connected to the piston disk 17.

[0058] Furthermore, a hydraulic sensor is installed inside the buffer sleeve 8, and the piston disc 17 divides the buffer sleeve 8 into two chambers, namely the buffer chamber and the clearance chamber. The reservoir pipe 19 is connected to the oil pump, and the oil pump can actively pump hydraulic oil into the reservoir pipe 19. The hydraulic oil will enter the buffer chamber inside the buffer sleeve 8 through the through groove 801.

[0059] Please see Figure 9 In the initial state, the vehicle is in a stable state. The connecting rod 11 is inserted into the buffer sleeve 8, and the limiting block 1601 is in abutting state with the movable plate 10. Under the action of the limiting block 1601, the piston plate 17 is controlled by the movable rod 16 to be located at the end of the stroke on the side away from the movable plate 10. At this time, the piston plate 17 controls the sealing tube 18 to be in a small area of ​​contact with the through groove 801, so that the through groove 801 is about to be fully connected, and the buffer chamber and the oil reservoir 19 in the buffer sleeve 8 are filled with oil.

[0060] When the vehicle travels over a bumpy road with a small amplitude of bumps, the force on the fork arm 4 is small. When the stress is transmitted to the shock absorber bracket 5 and the connecting rod 11, the compression of the first spring 7 and the second spring 13 is also small. Therefore, the displacement of the connecting rod 11 into the buffer sleeve 8 is small. The connecting rod 11 drives the movable plate 10 to move synchronously, causing the movable rod 16 to slide relative to the movable plate 10. The limit block 1601 separates from the movable plate 10, but the movable plate 10 has not yet moved to the position of contacting the piston plate 17. At this time, the hydraulic buffer mechanism does not intervene. The slight vibration of the vehicle is completely absorbed and buffered by the elastic force of the first spring 7 and the second spring 13, ensuring a gentle shock absorption effect when there are small amplitude bumps.

[0061] If the amplitude of the bumps is large, it indicates that the force on the fork arm 4 is also large. The sway angle of the fork arm 4 increases, which increases the travel of the connecting rod 11 within the buffer sleeve 8. When the force exceeds a certain value, the connecting rod 11 drives the movable disc 10 to move to the position where it abuts against the piston disc 17, and drives the piston disc 17 to move synchronously, which reduces the volume of the buffer chamber. The oil is squeezed and transported through the channel 801 to the reservoir pipe 19 and discharged through the reservoir pipe 19. When the piston disc 17 moves, it also drives the sealing pipe 18 to move synchronously, which gradually increases the overlapping area of ​​the sealing pipe 18 and the channel 801, and gradually decreases the conduction area of ​​the channel 801. The oil discharge rate slows down, and the hydraulic pressure in the buffer chamber gradually increases. Under the action of hydraulic pressure, an additional supporting force is generated and transmitted to the connecting rod 11 and the fork arm 4, which further provides supporting force to the fork arm 4, thereby effectively suppressing the violent shaking of the vehicle.

[0062] When the force on the fork arm 4 cancels out the elastic force of the first spring 7, the elastic force of the second spring 13, and the hydraulic support force, the connecting rod 11 moves toward the initial position under the action of the spring reset force, driving the movable plate 10 to move synchronously. When the movable plate 10 moves to the position where it abuts against the limit block 1601 again, the piston plate 17 is reset through the movable rod 16, the volume of the buffer chamber is restored, and the matching relationship between the sealing pipe 18 and the through groove 801 is also restored synchronously. During this process, the hydraulic sensor controls the oil pump to work according to the hydraulic pressure change in the buffer chamber, replenishing oil into the reservoir pipe 19 to ensure that there is always enough oil in the buffer chamber to cope with the next impact.

[0063] Through the elastic support of the first spring 7 and the second spring 13, and the cooperation of hydraulic support, the suspension can provide a graded and progressive damping response under different levels of bumps. When there are small bumps, the springs provide elastic cushioning, while when there are large bumps, the hydraulic cushioning mechanism automatically intervenes to provide gradually increasing hydraulic support force. This graded response mechanism enables the vehicle to obtain sufficient support force under complex road conditions, effectively suppressing body bounce and ensuring safe driving and ride comfort.

[0064] A stress-strain method for a stress-distributed suspension system in new energy vehicles includes the following steps:

[0065] Step 1: When encountering a bumpy road surface, the fork arm 4 will sway under force, which will drive the upper shock absorption mechanism to move, so as to distribute the stress to the upper support plate 2.

[0066] Step 2: The fork arm 4 will also drive the lower shock absorption mechanism to move, so as to distribute the stress to the lower support plate 3;

[0067] Step 3: The upper and lower shock absorption mechanisms work together to allow the fork arm 4 to quickly return to its original position;

[0068] Step 4: When the stress on the fork arm 4 is large, the lower shock absorption mechanism will also drive the hydraulic buffer mechanism to act accordingly, so as to provide hydraulic buffering effect.

[0069] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0070] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A stress-distributed suspension system for new energy vehicles, comprising: A subframe, and an upper support plate and a lower support plate mounted on the subframe, wherein a fork arm is hinged to the subframe; Its characteristic is that it further includes: An upper damping mechanism is symmetrically arranged on the fork arm and connected to the upper support plate. A lower damping mechanism connected to the lower support plate is also provided on the fork arm. When the fork arm is subjected to stress, the stress can be distributed to the upper support plate and the lower support plate through the upper damping mechanism and the lower damping mechanism. A hydraulic damping mechanism is provided on the lower shock absorber mechanism. The hydraulic damping mechanism can be activated when the lower shock absorber mechanism moves to perform gradual hydraulic damping.

2. The new energy vehicle suspension with a stress-distribution layout according to claim 1, characterized in that, The upper shock absorption mechanism includes a shock absorption bracket connected to the fork arm pivot, a support ring connected to the shock absorption bracket, a support sleeve hinged to the upper support plate that slides axially on the shock absorption bracket, and a first spring sleeved on the shock absorption bracket, with the two ends of the first spring abutting against the support sleeve and the support ring respectively.

3. A new energy vehicle suspension with a stress-distribution layout according to claim 1, characterized in that, The lower shock absorption mechanism includes a follower plate connected to the fork arm pivot, a support rod connected to the follower plate, and a reinforcing frame connected to the support rod installed on the follower plate. It also includes a telescopic component and an elastic component disposed on the lower support plate and connected to the support rod.

4. A new energy vehicle suspension with a stress-distribution layout according to claim 3, characterized in that, The telescopic assembly includes buffer sleeves hinged to the lower support plate and symmetrically distributed, with a connecting rod slidably installed inside the buffer sleeve, and the connecting rod being hinged to the support rod.

5. A new energy vehicle suspension with a stress-distribution layout according to claim 4, characterized in that, The elastic component includes a fixed ring connected to the buffer sleeve, a limit ring installed on the connecting rod, and a second spring sleeved on the connecting rod, with the two ends of the second spring abutting against the limit ring and the fixed ring, respectively.

6. A new energy vehicle suspension with a stress-distribution layout according to claim 3, characterized in that, The hydraulic buffer mechanism includes a through groove formed on the outer circumference of the buffer sleeve, and a liquid storage pipe connected to the through groove is connected to the buffer sleeve. It also includes a driven component and a pushing component disposed within the buffer sleeve and connected to the connecting rod.

7. A new energy vehicle suspension with a stress-distribution layout according to claim 6, characterized in that, The driven component includes a movable disk connected to the end of the connecting rod, a movable rod slidably mounted on the movable disk, and a limiting block connected to the end of the movable rod that abuts against the movable disk.

8. A new energy vehicle suspension with a stress-distribution layout according to claim 7, characterized in that, The actuating assembly includes a piston disc connected to the end of the movable rod, the piston disc being slidably and sealingly connected to the buffer sleeve, and a sealing tube connected to the piston disc to cooperate with the through groove.

9. A stress-strain method for a new energy vehicle suspension with a stress-distribution layout, comprising a new energy vehicle suspension with a stress-distribution layout as described in any one of claims 1-8, characterized in that, Includes the following steps: Step 1: When encountering a bumpy road surface, the fork arm will wobble under stress, causing the upper shock absorption mechanism to move, so as to distribute the stress to the upper support plate; Step 2: The fork arm will also drive the lower shock absorption mechanism to move, so as to distribute the stress to the lower support plate; Step 3: The upper and lower shock absorption mechanisms work together to allow the fork arm to quickly return to its original position; Step 4: When the fork arm is subjected to high stress, the lower shock absorption mechanism will also drive the hydraulic buffer mechanism to act accordingly, so as to provide hydraulic buffering effect.

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