A large-range folding and damping double wishbone suspension component and independent suspension

Abstract

The present invention discloses a large-scale folding and unfolding shock-absorbing double-wishbone suspension component and an independent suspension, which relates to the field of manned lunar rovers and includes a support base, a suspension torsion bar, and the suspension torsion bar is rotatably connected to the support base; the axial direction of the suspension torsion bar is defined as a first direction; a lower arm assembly, one end of which is fixed to the suspension torsion bar and the other end is connected to the steering knuckle via a universal joint, and the lower arm assembly drives the suspension torsion bar to rotate to achieve a transition from a folded state to an unfolded state; wherein the steering knuckle is used to connect to an external wheel assembly; an unfolding / folding assembly, which is arranged between the support base and the suspension torsion bar and is used to lock the lower arm assembly in a first state or a second state; an upper arm assembly, one end of which is rotatably connected to the support base and the other end is connected to the steering knuckle via a universal joint, and the upper arm assembly moves with the lower arm assembly; and a limiting assembly, which is used to limit the swing amplitude of the upper arm assembly in the first state. The present application has the effect of reducing excessive vibration while achieving suspension folding.

Description

Technical Field

[0001] The present application relates to the field of manned lunar rovers, and in particular to a large-scale folding and deploying shock-absorbing double-wishbone suspension component and an independent suspension. Background Art

[0002] Suspension is the general term for the connection between the wheels and the vehicle body. Its primary functions include transmitting all forces and moments between the wheels and the vehicle body, mitigating the impact of uneven road surfaces on the wheels, and improving the wheels' grip on the road. Therefore, suspension significantly impacts a vehicle's ride comfort, handling stability, and smoothness. Key suspension components include guide links, elastic elements, and vibration damping elements.

[0003] The suspension forms of ground vehicles have developed into various forms from simple to complex. Generally speaking, they are divided into non-independent suspensions in which the wheels on both sides are connected by an integral axle, and independent suspensions in which the left and right wheels are relatively independent. The emergence of independent suspensions has greatly improved the grip of the tires, and therefore has become the mainstream suspension form.

[0004] For lunar rovers, in order to facilitate transportation, the suspension is generally set to a foldable style to reduce the transportation volume; at the same time, due to the rugged surface of the moon and the different gravity, the lunar rover will vibrate excessively during the process of driving on the lunar surface. Summary of the Invention

[0005] Under the premise of achieving foldable suspension, excessive vibration is reduced. The present application provides a large-range foldable shock-absorbing double wishbone suspension component and an independent suspension.

[0006] In order to solve the above problems, the technical solution of the present invention is:

[0007] A large-range folding and expansion shock-absorbing double wishbone suspension component, comprising:

[0008] A support base for connecting to the external body;

[0009] A suspension torsion bar, the suspension torsion bar being rotatably connected to the support seat; it is defined that the axis direction of the suspension torsion bar is a first direction;

[0010] A lower arm assembly, one end of which is fixed to the suspension torsion bar and the other end of which is connected to the steering knuckle via a universal joint, wherein the lower arm assembly drives the suspension torsion bar to rotate to achieve a transition from a folded state to an open state; wherein the steering knuckle is used to connect to an external wheel assembly; it is defined that the lower arm assembly drives the suspension torsion bar to rotate to achieve an open state as a first state, and the lower arm assembly is in a folded state as a second state;

[0011] an unfolding / folding assembly, disposed between the support seat and the suspension torsion bar, for locking the lower arm assembly in the first state or the second state;

[0012] an upper arm assembly, one end of which is rotatably connected to the support base and the other end of which is connected to the steering knuckle via a universal joint, wherein the upper arm assembly moves following the movement of the lower arm assembly; wherein the rotation axis between the upper arm assembly and the support base is parallel to the first direction;

[0013] A limiting assembly is provided between the upper arm assembly and the support seat, and is used for limiting the swing amplitude of the upper arm assembly in the first state.

[0014] The large-range folding and unfolding shock-absorbing double wishbone suspension component of the present invention comprises a spline sleeve and a folding block; the spline sleeve is fixed to the suspension torsion bar, the folding block is fixed to the support seat, and the spline sleeve is provided with a first abutment surface;

[0015] When the first abutting surface contacts the folding block, the second state is assumed.

[0016] The large-range folding and unfolding shock-absorbing double wishbone suspension component of the present invention, the unfolding / folding assembly further includes an unfolding block and a locking assembly; the unfolding block is fixed to the support seat, and the second abutting surface is formed on the spline sleeve;

[0017] When the second abutting surface contacts the folding block, the first state is assumed;

[0018] The locking assembly includes a locking shell, a locking pin, and a locking spring; the locking shell is fixed to the support seat, the locking pin is movably sleeved in the locking shell, and the locking spring is arranged between the locking shell and the locking pin; and the locking spring drives the locking pin to move perpendicular to the first direction;

[0019] A groove is provided on the suspension torsion bar; when in the first state, the locking pin is located in the groove.

[0020] The large-range folding and expansion shock-absorbing double wishbone suspension component of the present invention has an upper limit surface on the support seat; when in the first state, the upper limit position of the upper arm assembly is where the upper limit surface abuts against the side wall of the upper arm assembly away from the lower arm assembly.

[0021] The large-range folding and expansion shock-absorbing double wishbone suspension component of the present invention comprises a limit assembly comprising a limit housing, a limit spring, a limit pin, and a limit block; the limit housing is fixed to the support seat, the limit pin is movably sleeved in the limit housing, the limit spring is arranged between the limit housing and the limit pin; the limit spring drives the limit pin to move;

[0022] The limit block is fixed to the upper arm assembly; when in the first state, the lower limit position of the upper arm assembly is where the limit pin abuts against the end surface of the limit block facing the lower arm assembly.

[0023] In the large-range folding and unfolding shock-absorbing double wishbone suspension component of the present invention, a slideway is provided on the limit block, and the limit pin moves on the slideway surface when the first state is converted to the second state.

[0024] The wide-range folding and expansion shock-absorbing double wishbone suspension component of the present invention comprises an upper arm assembly including an upper arm rod; the lower arm assembly including two active connecting blocks and a lower arm body; the two active connecting blocks are fixed to the suspension torsion bar and are spaced apart, and the lower arm body is fixed to the two active connecting blocks;

[0025] The lower arm body is connected to the steering knuckle through a universal joint.

[0026] In the large-range folding and deflecting double wishbone suspension component of the present invention, in the first state, the steering knuckle is located under the outer vehicle body floor; in the second state, the steering knuckle is located on the outer vehicle body side.

[0027] In the large-range folding and expansion shock-absorbing double-wishbone suspension component of the present invention, a pull rod for connecting to an external steering mechanism is fixed on the steering knuckle.

[0028] An independent suspension comprises the large-range folding and expansion shock-absorbing double wishbone suspension component.

[0029] Due to the adoption of the above technical solution, the present invention has the following advantages and positive effects compared with the prior art:

[0030] 1. The upper arm assembly and the lower arm assembly are rotated along corresponding axes to achieve folding or unfolding. When in the first state, the unfolding / folding assembly locks this state and limits the swing amplitude of the steering knuckle in the first state through the limit assembly, thereby achieving the effect of reducing excessive vibration while making the suspension component foldable.

[0031] Second, the lengths and angles between the hardpoints of the upper arm assembly, lower arm assembly, steering knuckle, and outer wheel center enable the suspension component to fold over a wide range, allowing the outer wheel assembly to fold under the chassis. This advantage ensures that the shape, length, and degrees of freedom of each component—the upper arm assembly, lower arm assembly, and steering knuckle—remain unchanged, resulting in high reliability. Furthermore, the design of hardpoints for the double wishbone suspension components, including the height of the roll moment center, chassis ground clearance, wheel diameter, track width, and wheel alignment parameters—is comprehensively considered in conjunction with driving conditions. This ensures that the suspension component maintains a wide range of folding and unfolding capabilities while also ensuring excellent handling stability and smooth ride in challenging environments and operating conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 Schematic diagram of the overall structure of the first state of the large-scale foldable and unfoldable shock-absorbing double wishbone suspension component according to the embodiment of the present application

[0033] Figure 2 Schematic diagram of the overall structure of the second state of the large-scale foldable and unfoldable shock-absorbing double wishbone suspension component according to the embodiment of the present application

[0034] Figure 3 Schematic diagram of the unfolding / folding assembly structure of the large-scale folding and damping double wishbone suspension component of the present application embodiment

[0035] Figure 4 Schematic diagram of the first state structure of the unfolding / folding assembly of the large-scale folding and damping double wishbone suspension component of the present application embodiment

[0036] Figure 5 Schematic diagram of the second state structure of the unfolding / folding assembly of the large-scale folding and damping double wishbone suspension component of the present application embodiment

[0037] Figure 6 Schematic diagram of the limit assembly structure of the large-scale foldable shock-absorbing double wishbone suspension component of the present application embodiment

[0038] Figure 7 Schematic diagram of the upper limit position structure of the limit assembly of the large-scale folding and unfolding shock-absorbing double wishbone suspension component in the embodiment of the present application

[0039] Figure 8 Schematic diagram of the lower limit structure of the limit assembly of the large-scale folding and unfolding shock-absorbing double wishbone suspension component in the embodiment of the present application

[0040] Figure 9 Schematic diagram of the folding process of the large-scale foldable shock-absorbing double wishbone suspension component in the embodiment of the present application

[0041] Explanation of the accompanying drawings: 1. Support seat; 2. Suspension torsion bar; 3. Lower arm assembly; 4. Upper arm assembly; 5. Steering knuckle; 6. Universal joint; 7. Spline sleeve; 8. Folding block; 9. First abutment surface; 10. Expanding block; 11. Second abutment surface; 12. Locking shell; 13. Locking pin; 14. Locking spring; 15. Groove; 16. Upper limit surface; 17. Limit shell; 18. Limit spring; 19. Limit pin; 20. Limit block; 21. Slide; 22. Active connecting block; 23. Lower arm body; 24. Pull rod. DETAILED DESCRIPTION

[0042] The following is a further detailed description of a large-range folding and damping double wishbone suspension component and an independent suspension proposed in the present invention in conjunction with the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent from the following description and claims.

[0043] Example 1:

[0044] See Figure 1 and Figure 2 In this embodiment, a large-range folding and unfolding shock-absorbing double wishbone suspension component is provided, including a support seat 1, a suspension torsion bar 2, a lower arm assembly 3, an upper arm assembly 4, an unfolding / folding assembly and a limiting assembly; the support seat 1 is used to connect to the external vehicle body; the suspension torsion bar 2 is rotatably connected to the support seat 1; it is defined that the axial direction of the suspension torsion bar 2 is the first direction. One end of the lower arm assembly 3 is fixed to the suspension torsion bar 2, and the other end is connected to the steering knuckle 5 through the universal joint 6. The lower arm assembly 3 drives the suspension torsion bar 2 to rotate to achieve a transition from a folded state to an open state; wherein the steering knuckle 5 is used to connect to the external wheel assembly; it is defined that the lower arm assembly 3 drives the suspension torsion bar 2 to rotate to achieve an open state as the first state, and the lower arm assembly 3 is in a folded state as the second state. The unfolding / folding assembly is arranged between the support seat 1 and the suspension torsion bar 2, and is used to lock the lower arm assembly 3 in the first state or the second state. One end of the upper arm assembly 4 is pivotally connected to the support base 1, and the other end is connected to the steering knuckle 5 via a universal joint 6. The upper arm assembly 4 moves with the lower arm assembly 3. The rotation axis between the upper arm assembly 4 and the support base 1 is parallel to the first direction. A limiting assembly is disposed between the upper arm assembly 4 and the support base 1 to limit the swing amplitude of the upper arm assembly 4 in the first state.

[0045] Furthermore, the support base 1 is fixed to the vehicle body. To ensure a more secure support between the support base 1 and the suspension torsion bar 2, the support base 1 comprises three sections: two sections connected to the ends of the suspension torsion bar 2, and one section connected to the middle of the suspension torsion bar 2. The length of the suspension torsion bar 2 is parallel to the horizontal plane. The support base 1 also includes a support chassis, to which one end of the upper arm assembly 4 is connected, and the support chassis is located between two adjacent sections of the support base 1.

[0046] It is further provided that the upper arm assembly 4 is higher than the axis of the suspension torsion bar 2 around the axis of rotation of the supporting chassis.

[0047] In actual use, during transportation, the lunar rover is maintained in the second state by external thrust (manual push): the upper arm assembly 4 is pushed to rotate the upper arm assembly 4 around the first direction, and drives the lower arm assembly 3 to move, and the lower arm assembly 3 approaches the suspension torsion bar 2 until it is vertically arranged (such as Figure 2 ); the cross section of the steering knuckle 5 is now parallel to the chassis, allowing it to fold as much as possible and reducing the transport volume. Of course, the suspension's folded-state locking and clamping mechanism on the underside of the chassis passes through the lower arm assembly 3 and is screwed to the bottom of the steering knuckle 5 to ensure that the folded suspension remains locked and stable during launch.

[0048] In actual operation, when transitioning from the second state to the first state, the suspension folding lock and clamp mechanism under the chassis is released, causing lower arm assembly 3 to rotate, driving suspension torsion bar 2 and simultaneously moving upper arm assembly 4 away from torsion bar 2, thereby aligning upper arm assembly 4 horizontally along its length. At this point, the unfolding / folding assembly is used to lock the first state, and the limiter assembly reduces excessive vibration of the double wishbone suspension components during the lunar rover's operation.

[0049] The specific structure of the large-scale folding and deflecting double wishbone suspension component of this embodiment is further described below:

[0050] Reference Figure 1 、 Figure 3 and Figure 5 In this embodiment, the unfolding / folding assembly includes a spline sleeve 7 and a folding block 8; the spline sleeve 7 is fixed on the suspension torsion bar 2, the folding block 8 is fixed on the support seat 1, and a first abutting surface 9 is provided on the spline sleeve 7; when the first abutting surface 9 contacts the folding block 8, it is in the second state.

[0051] It is further provided that the spline sleeve 7 is located at one end of the suspension torsion bar 2 .

[0052] Reference Figure 3 and Figure 4 In this embodiment, the unfolding / folding assembly further includes an unfolding block 10 and a locking assembly; the unfolding block 10 is fixed on the support seat 1, and a second abutting surface 11 is provided on the spline sleeve 7; when the second abutting surface 11 contacts the folding block 8, it is in the first state.

[0053] The locking assembly includes a locking shell 12, a locking pin 13 and a locking spring 14; the locking shell 12 is fixed on the support seat 1, the locking pin 13 is movably sleeved in the locking shell 12, and the locking spring 14 is arranged between the locked shell 12 and the locking pin 13; and the locking spring 14 drives the locking pin 13 to move in a direction perpendicular to the first direction; a groove 15 is provided on the suspension torsion bar 2; when in the first state, the locking pin 13 is located in the groove 15.

[0054] Further, the unfolding block 10 is similar to an L-shape, and the unfolding block 10 is half wrapped around the folding block 8; an adapting surface for adapting to the first abutting surface 9 is opened on the side wall of the folding block 8, and the adapting surface abuts against the first abutting surface 9, which is the second state; when the first state is transformed into the second state, the rotation direction of the suspension torsion bar 2 is defined as follows: Figure 5 Clockwise direction in view.

[0055] It is further provided that the locking pin 13 extends to the outside of the locking housing 12 away from one end of the suspension torsion bar 2 .

[0056] The overall process is as follows: in the second state, the spline sleeve 7 abuts against the folding block 8, and the locking spring 14 abuts against the side wall of the suspension torsion bar 2; the lower arm assembly 3 rotates counterclockwise around the axis of the suspension assembly and is in the first state; due to the presence of the groove 15, the locking pin 13 enters the groove 15 under the pushing force of the locking spring 14, achieving the locking effect; at the same time, the second abutting surface 11 abuts against the unfolding block 10.

[0057] Reference Figure 1 、 Figure 6 and Figure 7 In this embodiment, an upper limit surface 16 is provided on the support seat 1 , and the upper limit position of the upper arm assembly 4 is when the upper limit surface 16 abuts against the side wall of the upper arm assembly 4 away from the lower arm assembly 3 .

[0058] Refer to 6 and Figure 8 In this embodiment, the limit assembly includes a limit shell 17, a limit spring 18, a limit pin 19 and a limit block 20; the limit shell 17 is fixed on the support seat 1, the limit pin 19 is movably sleeved in the limit shell 17, and the limit spring 18 is arranged between the limit shell 17 and the limit pin 19; the limit spring 18 drives the limit pin 19 to move perpendicular to the first direction; the limit block 20 is fixed to the upper arm assembly 4; when in the first state, the lower limit position of the upper arm assembly 4 is the limit pin 19 abutting against the end face of the limit block 20 facing the lower arm assembly 3.

[0059] It is further provided that the upper arm assembly 4 rotates between an upper limit position and a lower limit position, so as to limit excessive swing of the upper arm assembly 4 and thereby reduce the overall swing amplitude of the double wishbone suspension component.

[0060] Further description, in the second state, the limit pin 19 extends under the action of the limit spring 18 and abuts against the upper end of the limit block 20 (such as Figure 2 In the first state, the limit pin 19 is pushed by the limit spring 18 to achieve the limit pin 19 protruding from the limit shell 17.

[0061] It is further provided that one end of the limiting shell 17 away from the limiting block 20 is opened.

[0062] Reference Figure 6 In this embodiment, a slideway 21 is provided on the limit block 20, and the limit pin 19 moves on the surface of the slideway 21 when the first state is converted to the second state.

[0063] Reference Figure 1 In this embodiment, the upper arm assembly 4 includes an upper arm rod; the lower arm assembly 3 includes two active connecting blocks 22 and a lower arm body 23; the two active connecting blocks 22 are fixed on the suspension torsion bar 2 and are arranged at intervals, and the lower arm body 23 is fixed on the two active connecting blocks 22; the lower arm body 23 is connected to the steering knuckle 5 through the universal joint 6.

[0064] It is further explained that the connection of the lower arm assembly 3 is made more stable.

[0065] In this embodiment, in the second state, the steering knuckle 5 is located under the outer vehicle body floor; in the second state, the steering knuckle 5 is located at the outer vehicle body side.

[0066] It is further provided that the volume of the envelope where all the joint hard points of the double wishbone suspension component provided by this solution are located is no larger than 450mm×320mm×340mm in the unfolded state, and no larger than 390mm×320mm×390mm in the folded state.

[0067] In this embodiment, a pull rod 24 for connecting to an external steering mechanism is fixed on the steering knuckle 5 for steering.

[0068] To explain the transition from the second state to the first state from the perspective of a four-bar linkage: A point on the axis of rotation of the upper arm assembly 4 about the support base is O1, and a point on the axis of the lower arm assembly 3 about the suspension torsion bar 2 is O2. A is the hard point connecting the upper arm assembly 4 and the steering knuckle 5, B is the hard point connecting the lower arm assembly 3 and the steering knuckle 5, and C is the wheel center point.

[0069] The four-link guide mechanism composed of the upper arm assembly O1A, the lower arm assembly O2B and the steering knuckle AB has a length and mutual angle that can meet the direct folding and extension of the wheel C within a large angle range of 90° without affecting the function and performance of the suspension on special road surfaces.

[0070] The principle of the large-scale folding and expanding shock-absorbing double wishbone suspension component of this embodiment is described below:

[0071] Manual decoupling of the double wishbone suspension component in working state: In the initial state, the double wishbone suspension component is in the first state and is located at the lower limit position (such as Figure 1 and Figure 5 When the limit pin 19 is pulled out, the limit block 20 mounted on the upper arm assembly 4 is released, allowing the upper cross arm to rotate freely. Simultaneously, the locking pin 13 located in the groove 15 is pulled out, releasing the spline sleeve 7. The suspension torsion bar 2 is decoupled from the working state, and the lower arm assembly 3 rotates, driving the outer travel brake mechanism and wheel assembly to achieve a large-scale folding, ultimately transitioning to the second state.

[0072] Automatic folding and unfolding of the double wishbone suspension component: After the double wishbone suspension component is in the decoupled working state, the rotary shock absorber that can be installed on the upper arm assembly 4 provides power to assist the double wishbone suspension component in unfolding.

[0073] The double wishbone suspension components are automatically locked when deployed: in the second state, the upper arm assembly 4 rotates upward and deploys to the lower limit position, that is, the upper arm assembly 4 drives the limit block 20 to rotate above the limit pin 19, and the groove 15 of the spline sleeve 7 of the suspension torsion bar 2 rotates to align with the locking pin 13; at this time, the locking pin 13 pops out under the locking spring 14, and the limit pin 19 pops out under the action of the limit spring 18, so that the suspension is automatically locked when deployed and enters the working state.

[0074] The lengths and angles between the hardpoints of the upper arm assembly 4, lower arm assembly 3, steering knuckle 5, and outer wheel center enable the suspension component to achieve a wide range of folding and unfolding, allowing the outer wheel assembly to be folded beneath the chassis. This advantage ensures that the shape, length, and degrees of freedom of the individual components—the upper arm assembly 4, lower arm assembly 3, and steering knuckle 5—remain unchanged, resulting in high reliability. Furthermore, the design of the double wishbone suspension components, including the height of the roll moment center, chassis ground clearance, wheel diameter, track width, and wheel alignment parameters—is comprehensively considered in conjunction with driving conditions. Consequently, the suspension component achieves a wide range of folding and unfolding while also ensuring excellent handling stability and smooth ride in challenging environments and operating conditions.

[0075] Example 2:

[0076] Reference Figure 1 , an independent suspension including a double wishbone suspension component with a wide range of folding and shock absorption.

[0077] The large-range folding and unfolding shock-absorbing double wishbone suspension components include a support base 1, a suspension torsion bar 2, a lower arm assembly 3, an upper arm assembly 4, an unfolding / folding assembly, and a limiting assembly; the support base 1 is used to connect to the external vehicle body; the suspension torsion bar 2 is rotatably connected to the support base 1; it is defined that the axial direction of the suspension torsion bar 2 is the first direction. One end of the lower arm assembly 3 is fixed to the suspension torsion bar 2, and the other end is connected to the steering knuckle 5 through a universal joint 6. The lower arm assembly 3 drives the suspension torsion bar 2 to rotate to achieve a transition from a folded state to an open state; wherein the steering knuckle 5 is used to connect to the external wheel assembly; it is defined that the lower arm assembly 3 drives the suspension torsion bar 2 to rotate to achieve an open state as the first state, and the lower arm assembly 3 is in a folded state as the second state. The unfolding / folding assembly is arranged between the support base 1 and the suspension torsion bar 2, and is used to lock the lower arm assembly 3 in the first state or the second state. One end of the upper arm assembly 4 is pivotally connected to the support base 1, and the other end is connected to the steering knuckle 5 via a universal joint 6. The upper arm assembly 4 moves with the lower arm assembly 3. The rotation axis between the upper arm assembly 4 and the support base 1 is parallel to the first direction. A limiting assembly is disposed between the upper arm assembly 4 and the support base 1 to limit the swing amplitude of the upper arm assembly 4 in the first state.

[0078] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, if such changes fall within the scope of the claims of the present invention and their equivalents, they will still fall within the scope of protection of the present invention.

Claims

1. A large-range folding and damping double wishbone suspension component, characterized in that: include, Support base, used for connecting to the external body; a suspension torsion bar, the suspension torsion bar being rotatably connected to the support seat; Definition: The axis direction of the suspension torsion bar is a first direction; A lower arm assembly, one end of which is fixed to the suspension torsion bar and the other end of which is connected to the steering knuckle via a universal joint, wherein the lower arm assembly drives the suspension torsion bar to rotate to achieve a transition from a folded state to an open state; wherein the steering knuckle is used to connect to an external wheel assembly; it is defined that the lower arm assembly drives the suspension torsion bar to rotate to achieve an open state as a first state, and the lower arm assembly is in a folded state as a second state; an unfolding / folding assembly, disposed between the support seat and the suspension torsion bar, for locking the lower arm assembly in the first state or the second state; an upper arm assembly, one end of which is rotatably connected to the support base and the other end of which is connected to the steering knuckle via a universal joint, wherein the upper arm assembly moves following the movement of the lower arm assembly; wherein the rotation axis between the upper arm assembly and the support base is parallel to the first direction; a limiting assembly, disposed between the upper arm assembly and the support base, for limiting the swing amplitude of the upper arm assembly in the first state; The support base includes three support bases; two of the support bases are connected to the ends of the suspension torsion bar, and the other support base is connected to the middle of the suspension torsion bar; the support base also includes a support chassis, one end of the upper arm assembly is connected to the support chassis, and the support chassis is located between the two adjacent support bases; The unfolding / folding assembly includes a spline sleeve and a folding block; the spline sleeve is fixed to the suspension torsion bar, the folding block is fixed to the support seat, and the spline sleeve is provided with a first abutting surface; when the first abutting surface contacts the folding block, the second state is assumed; The unfolding / folding assembly further comprises an unfolding block and a locking assembly; the unfolding block is fixed on the support seat, and a second abutting surface is formed on the spline sleeve; When the second abutment surface contacts the folding block, the first state is assumed; the locking assembly includes a locking shell, a locking pin and a locking spring; the locking shell is fixed to the support seat, the locking pin is movably sleeved in the locking shell, the locking spring is arranged between the locking shell and the locking pin; and the locking spring drives the locking pin to move in a direction perpendicular to the first direction; a groove is provided on the suspension torsion bar; when the first state is assumed, the locking pin is located in the groove; The limiting assembly includes a limiting shell, a limiting spring, a limiting pin and a limiting block; the limiting shell is fixed on the support seat, the limiting pin is movably sleeved in the limiting shell, and the limiting spring is arranged between the limiting shell and the limiting pin; the limiting spring drives the limiting pin to move; the limiting block is fixed to the upper arm assembly; when in the first state, the lower limit position of the upper arm assembly is the end face of the limiting block facing the lower arm assembly where the limiting pin abuts.

2. The large-range folding and deflecting double wishbone suspension component according to claim 1, characterized in that: An upper limit surface is provided on the support seat; when in the first state, the upper limit position of the upper arm assembly is when the upper limit surface abuts against the side wall of the upper arm assembly away from the lower arm assembly.

3. The large-range folding and deflecting double wishbone suspension component according to claim 1, characterized in that: A slideway is provided on the limit block, and the limit pin moves on the slideway surface when the first state is converted to the second state.

4. The large-range folding and deflecting double wishbone suspension component according to claim 1, characterized in that: The upper arm assembly includes an upper arm rod; the lower arm assembly includes two active connecting blocks and a lower arm body; the two active connecting blocks are fixed to the suspension torsion bar and are spaced apart, and the lower arm body is fixed to the two active connecting blocks; The lower arm body is connected to the steering knuckle through a universal joint.

5. The large-range folding and deflecting double wishbone suspension component according to claim 1, characterized in that: In the first state, the steering knuckle is located under the outer vehicle body floor; in the second state, the steering knuckle is located on the outer vehicle body side.

6. The large-range folding and deflecting double wishbone suspension component according to claim 1, characterized in that: A pull rod for connecting to an external steering mechanism is fixed on the steering knuckle.

7. An independent suspension, characterized in that: The invention comprises the large-range folding and shock-absorbing double wishbone suspension component as described in any one of claims 1 to 6.

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