Transverse plate spring type independent suspension structure and unmanned material vehicle

Abstract

The utility model provides a transversely-arranged plate spring type independent suspension structure and an unmanned material vehicle. The transversely-arranged plate spring type independent suspension structure comprises brake assemblies arranged on the left side and the right side respectively, knuckle assemblies arranged on the brake assemblies and transversely-arranged plate springs. Each steering knuckle assembly comprises a main plate body connected to the brake assembly and a supporting arm connected with the main plate body, and the supporting arm extends upwards in the height direction of the vehicle and inclines towards one side in the vehicle; the two ends of the transversely-arranged plate spring are in spherical hinge connection with the corresponding supporting arms respectively, the transversely-arranged plate spring is a single steel spring plate arranged in the width direction of the vehicle, in the width direction of the vehicle, the middle of the steel spring plate arches upwards in the height direction of the vehicle and is connected with the vehicle frame, and the thickness of the steel spring plate is gradually reduced from the middle to the ends. The transverse plate spring type independent suspension structure is compact in structure, and the roll rigidity of the suspension can be greatly improved, so that the roll performance of the whole vehicle during turning can be ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of chassis suspension, and in particular to a transverse leaf spring type independent suspension structure. The utility model also relates to an unmanned material vehicle provided with the transverse leaf spring type independent suspension structure. Background Art

[0002] In the related art, for the suspension structure of unmanned material vehicles, due to the narrow wheelbase and high center of mass of unmanned material vehicles, the traditional double wishbone suspension is not easy to arrange due to the limitation of space structure, and the spring stiffness of the double wishbone suspension structure cannot meet the requirements of the vehicle's roll performance. Therefore, it is urgent to design a suspension structure to meet the use requirements. Utility Model Content

[0003] In view of this, the utility model aims to propose a transverse leaf spring type independent suspension structure, so as to improve the roll stiffness of the suspension and ensure the roll performance during cornering.

[0004] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0005] A transverse leaf spring type independent suspension structure, comprising brake assemblies arranged on left and right sides, a steering knuckle assembly arranged on each of the brake assemblies, and a transverse leaf spring;

[0006] Each of the steering knuckle assemblies comprises a main plate body connected to the brake assembly, and a support arm connected to the main plate body, wherein the support arm extends upward along the height direction of the vehicle and is inclined toward one side of the vehicle interior;

[0007] Both ends of the transverse leaf spring are respectively connected to the corresponding support arm ball joints, and the transverse leaf spring is a single spring steel plate arranged along the width direction of the vehicle. In the width direction of the vehicle, the middle part of the spring steel plate is arched upward along the height direction of the vehicle and is connected to the frame, and the thickness of the spring steel plate is gradually reduced from the middle to the end.

[0008] Furthermore, the spring steel plate is connected to the vehicle frame via a leaf spring seat; the leaf spring seat is provided with a receiving groove for receiving the middle part of the spring steel plate, and the leaf spring seat is provided with a limiting structure for limiting the spring steel plate in the receiving groove.

[0009] Further, the limiting structure includes a first limiting member arranged on the leaf spring seat, and the first limiting member can press the spring steel plate against the groove wall of the accommodating groove; or, the limiting structure includes second limiting members arranged opposite to each other on the leaf spring seat, and each of the second limiting members can press against the opposite sides of the spring steel plate respectively.

[0010] Furthermore, a positioning structure is provided between the spring steel plate and the vehicle frame.

[0011] Furthermore, the positioning structure includes a positioning column provided on one of the spring steel plate and the frame, and a positioning hole provided on the other of the spring steel plate and the frame;

[0012] The positioning column is inserted into the positioning hole.

[0013] Furthermore, a buffer block is provided on the frame at the end portion corresponding to the spring steel plate; and / or the main board body and the support arm are integrally formed by forging.

[0014] Furthermore, a lower arm assembly is provided at the lower end of each main board body, and at least one of the lower arm assemblies is provided with a shock absorber; one end of each lower arm assembly away from the corresponding steering knuckle assembly and one end of the shock absorber away from the lower arm assembly are both connected to the frame.

[0015] Compared with the prior art, the utility model has the following advantages:

[0016] The transverse leaf spring independent suspension structure described in the utility model adopts a variable cross-section single-piece spring steel plate as the transverse leaf spring in the suspension structure, which has the characteristics of high material utilization and excellent performance, and can replace the upper cross arm assembly, spring assembly and stabilizer bar assembly of the traditional double wishbone suspension, and can play a multi-purpose role. At the same time, when used in an unmanned material vehicle, the roll stiffness of the suspension can be greatly improved, thereby ensuring the roll performance of the entire vehicle when turning.

[0017] In addition, the accommodating groove arranged on the leaf spring seat is conducive to supporting the middle part of the spring steel plate, and the limiting structure arranged can prevent the spring steel plate from producing relative displacement in the accommodating groove, thereby improving the reliability of the connection between the spring steel plate and the frame, and also ensuring that the entire suspension structure meets the design requirements in terms of motion performance, thereby avoiding the deviation of the entire vehicle.

[0018] Secondly, the limiting structure adopts a first limiting member, so that the first limiting member presses the spring steel plate against the groove wall of the accommodating groove, and its structure is simple and easy to operate. The limiting structure adopts second limiting members arranged oppositely, and each second limiting member presses against the opposite side of the spring steel plate respectively, which also has the characteristics of simple structure and easy operation, and the second limiting members arranged oppositely can also fine-tune the position of the spring steel plate in the accommodating groove along the width direction of the spring steel plate.

[0019] Furthermore, the positioning structure set between the spring steel plate and the frame is conducive to ensuring the accuracy of the installation position of the spring steel plate on the frame. The positioning structure adopts the insertion and matching of the positioning column and the positioning hole, and its structure is simple and easy to operate and install. The buffer block set at the end of the spring steel plate on the frame can, on the one hand, play a certain buffering role for the spring steel plate, and on the other hand, it can limit the movement of the spring steel plate, thereby ensuring that the spring steel plate moves within a certain range and avoiding the breakage caused by excessive deformation of the spring steel plate. The main board and the support arm are forged in one piece, which is conducive to improving the strength and impact resistance of the steering knuckle assembly.

[0020] In addition, the setting of the lower arm assembly can play a role in restraining the change of the four-wheel alignment parameters when restraining the wheel bounce. The shock absorber can play a buffering and shock-absorbing effect between the suspension structure and the frame.

[0021] Another object of the utility model is to provide an unmanned material vehicle, on which the above-mentioned transverse leaf spring independent suspension structure is provided.

[0022] The unmanned material vehicle of the utility model adopts the above-mentioned transverse leaf spring independent suspension structure, which can not only greatly improve the roll stiffness of the suspension and ensure the roll performance of the whole vehicle when turning, but also has the characteristics of compact structure, high cost performance, good strength and good sports performance, while also effectively ensuring the handling stability and smoothness requirements of the whole vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0024] Figure 1 It is a structural schematic diagram of a transverse leaf spring type independent suspension structure according to an embodiment of the utility model from a first perspective;

[0025] Figure 2 It is a structural schematic diagram of the second viewing angle of the transverse leaf spring type independent suspension structure according to the embodiment of the utility model;

[0026] Figure 3 It is a structural schematic diagram of the matching state of the leaf spring seat and the spring steel plate according to the embodiment of the utility model;

[0027] Figure 4 It is a structural schematic diagram of the spring steel plate according to an embodiment of the utility model from a first perspective;

[0028] Figure 5 A schematic structural diagram of a spring steel plate according to an embodiment of the utility model from a second viewing angle;

[0029] Figure 6 It is a structural schematic diagram of the leaf spring seat according to an embodiment of the utility model from a first perspective;

[0030] Figure 7 It is a structural schematic diagram of the leaf spring seat according to the embodiment of the utility model from a second viewing angle;

[0031] Description of reference numerals:

[0032] 1. Brake assembly; 2. Steering knuckle assembly; 3. Spring steel plate; 4. Leaf spring seat; 5. Buffer block; 6. Lower arm assembly; 7. Shock absorber;

[0033] 21. Main body; 22. Support arm; 301. Connecting hole; 302. Mounting hole; 401. Through hole; 41. Accommodating groove; 42. Limiting bolt; 43. Positioning column; 11. Ball pin; 12. First connecting member; 13. Second connecting member; 31. Middle section; 32. Connecting section; 33. End section. DETAILED DESCRIPTION

[0034] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0035] In the description of the present invention, it should be noted that if there are terms such as "upper", "lower", "inner", "outer" and the like indicating orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, if there are terms such as "first" and "second", they are also used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0036] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installation", "connection", "connection" and "connector" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0037] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0038] Embodiment 1

[0039] The present embodiment relates to a transverse leaf spring type independent suspension structure, which can improve the roll stiffness of the suspension and ensure the roll performance during cornering.

[0040] In terms of overall composition, Figure 1 and Figure 2 As shown, the transverse leaf spring type independent suspension structure of this embodiment includes brake assemblies 1 arranged on the left and right sides, a steering knuckle assembly 2 arranged on each brake assembly 1, and a transverse leaf spring.

[0041] Each steering knuckle assembly includes a main plate 21 connected to the brake assembly 1, and a support arm 22 connected to the main plate 21, the support arm 22 extending upward along the vehicle height direction and tilted toward one side of the vehicle. The two ends of the transverse leaf spring are respectively connected to the corresponding support arm 22 by ball joints, and the transverse leaf spring is a single spring steel plate 3 arranged along the vehicle width direction. In the vehicle width direction, the middle part of the spring steel plate 3 is arched upward along the vehicle height direction and connected to the frame, and the thickness of the spring steel plate 3 is gradually reduced from the middle part to the end.

[0042] In the above structure, the transverse leaf spring adopts a single spring steel plate 3 with a variable cross-section, which has a high material utilization rate, high structural strength, and a simple structure. The transverse leaf spring is arranged on the arm 22 of the steering knuckle assembly 2, forming an upper arrangement of the transverse leaf spring, thereby making the overall arrangement of the suspension structure more compact, and can replace the upper arm assembly, spring assembly and stabilizer bar assembly of the traditional double wishbone suspension, and can play a multi-purpose role. At the same time, when used in an unmanned material vehicle, the roll stiffness of the suspension can be greatly improved, thereby ensuring the roll performance of the vehicle when turning.

[0043] It is worth noting that the transverse leaf spring independent suspension structure of the present embodiment can be used not only in unmanned material vehicles, but also in other vehicle types, such as passenger cars, commercial vehicles, etc., and the present embodiment does not impose any limitation on this.

[0044] In detail, by Figure 1 and Figure 2 , and combined with Figures 3 to 5 As shown, in this embodiment, there are two brake assemblies 1, and the two brake assemblies 1 are respectively arranged on the left and right sides of the vehicle. Each brake assembly 1 is provided with a steering knuckle assembly 2, and the steering knuckle assembly 2 is fastened to the side of the corresponding brake assembly 1 facing the vehicle interior by bolts. In addition, each steering knuckle assembly 2 includes a main plate body 21 screwed to the brake assembly 1, and a support arm 22 connected to the main plate body 21, and the support arm 22 extends upward along the height direction of the vehicle and tilts toward the vehicle interior.

[0045] As a preferred embodiment, in this embodiment, the main plate body 21 and the support arm 22 are integrally formed by forging. Such a configuration is beneficial to improving the strength and impact resistance of the steering knuckle assembly 2.

[0046] The transverse leaf spring of this embodiment is a single spring steel plate 3 arranged along the width direction of the vehicle, and the two ends of the transverse leaf spring, that is, the two ends of the spring steel plate 3, are respectively connected to the corresponding support arms 22 on the left and right sides by ball joints. Specifically, each support arm 22 is fixed with a ball pin 11, and the ends of the spring steel plate 3 are respectively connected to the ball pin 11 through a first connecting member 12. The first connecting member 12 is, for example, a bolt or a screw, and the first connecting member 12 passes through a connecting hole 301 on the end of the spring steel plate 3 and is screwed to the connecting plate of the ball pin 11. As a result, the two ends of the spring steel plate 3 are respectively connected to the top ball pin 11 of the support arm 22, and an upper arrangement of the transverse leaf spring is formed.

[0047] Continue to view Figures 1 to 5 As shown, in this embodiment, in the vehicle width direction, the middle portion of the spring steel plate 3 is arched upward along the vehicle height direction, and the thickness of the spring steel plate 3 is gradually reduced from the middle portion to the end portion. Figures 3 to 5 As shown, the projection of the spring steel plate 3 in the vehicle width direction comprises a straight middle section 31, a connecting section 32 connected to both ends of the middle section 31 and tilted downward in the vehicle height direction, and an end section 33 connected to the connecting section 32. The end section 33 tilts upward in the vehicle height direction, so that it can better match the camber angles of the wheels on the left and right sides.

[0048] In this embodiment, the thickness d1 of the middle section 31 is greater than the thickness d2 of the connecting section 32, and the thickness d2 of the connecting section 32 is greater than the thickness d3 of the end section 33. Among them, the thickness d2 of the connecting section 32 is gradually reduced in the direction from the middle to the end. By designing the shape and variable cross-section of the spring steel plate 3, it not only has good structural strength, but also has high material utilization and excellent performance. And by the upper arrangement of the spring steel plate 3, it can also replace the upper cross arm assembly, spring assembly and stabilizer bar assembly of the traditional double wishbone suspension, and can play a multi-purpose role.

[0049] Since the unmanned logistics vehicle has a high center of mass and a short wheelbase, the design of the inclination angles of the wheels on the left and right sides will result in the transverse leaf spring being arranged on top, which will require it to withstand much greater stress than when arranged on the bottom. The spring stiffness of the traditional double wishbone suspension structure cannot meet the requirements of the vehicle's roll performance. When the transverse leaf spring independent suspension structure of this embodiment is applied to an unmanned logistics vehicle, it can also greatly increase the roll stiffness of the suspension, thereby ensuring the roll performance of the vehicle when turning.

[0050] In this embodiment, as a preferred implementation, the spring steel plate 3 is connected to the vehicle frame via the leaf spring seat 4. Figures 1 to 3 , and combined with Figure 6 and Figure 7 As shown, the leaf spring seat 4 is provided with a receiving groove 41 for receiving the middle part of the spring steel plate 3, and the leaf spring seat 4 is provided with a limiting structure for limiting the spring steel plate 3 in the receiving groove 41. The provision of the receiving groove 41 can provide a better support for the middle part of the spring steel plate 3, and the provision of the limiting structure can effectively prevent the spring steel plate 3 from generating relative displacement in the receiving groove 41, thereby improving the reliability of the connection between the spring steel plate 3 and the frame, and also ensuring that the entire suspension structure meets the design requirements in terms of motion performance, and avoiding the deviation of the entire vehicle.

[0051] Specifically, the leaf spring seat 4 is connected to the vehicle frame through the second connecting member 13. The second connecting member 13 can be, for example, a bolt or a screw. During the specific installation, the middle of the spring steel plate 3 is accommodated in the accommodating groove 41 of the leaf spring seat 4, and then the second connecting member 13 is passed through the through hole on the vehicle frame, and the second connecting member 13 is screwed on the leaf spring seat 4, so that the leaf spring seat 4 is connected to the vehicle frame, and the spring steel plate 3 is fixed between the leaf spring seat 4 and the vehicle frame.

[0052] The above-mentioned limiting structure, as a preferred embodiment, includes a first limiting member provided on the leaf spring seat 4, and the first limiting member can press the spring steel plate 3 against the groove wall of the accommodating groove 41. At this time, the limiting structure adopts the first limiting member, so that the first limiting member presses the spring steel plate 3 against the groove wall of the accommodating groove 41, and its structure is simple and easy to operate.

[0053] As another preferred embodiment, the limiting structure includes second limiting members arranged relatively on the leaf spring seat 4, and each second limiting member can be respectively pressed against the opposite side of the spring steel plate 3. The first limiting member and the second limiting member can, for example, adopt limiting bolts 42 screwed on the leaf spring seat 4, and the spring steel plate 3 is pressed against the groove wall of the receiving groove 41, or against the opposite side of the spring steel plate 3 by screwing the limiting bolts 42. At this time, the limiting structure adopts the second limiting members arranged relatively, and each second limiting member is respectively pressed against the opposite side of the spring steel plate 3, which also has the characteristics of simple structure and easy operation, and the second limiting members arranged relatively can also fine-tune the position of the spring steel plate 3 in the receiving groove 41 along the width direction of the spring steel plate 3.

[0054] In this embodiment, see Figures 1 to 3 , and combined with Figure 6 and Figure 7As shown, the opposite side walls of the receiving groove 41 are respectively provided with limiting bolts 42, and the limiting bolts 42 on each side wall are arranged in a plurality of intervals. At this time, when the spring steel plate 3 is installed on the frame, the limiting bolts 42 on each side wall are screwed in, so that the opposite limiting bolts 42 are respectively pressed against the opposite side parts of the spring steel plate 3, thereby making the spring steel plate 3 better limited in the receiving groove 41.

[0055] In addition, in this embodiment, a positioning structure is provided between the spring steel plate 3 and the frame. The positioning structure is provided to ensure the accuracy of the installation position of the spring steel plate 3 on the frame. Specifically, the positioning structure includes a positioning column 43 provided on one of the spring steel plate 3 and the frame, and a positioning hole provided on the other of the spring steel plate 3 and the frame. The positioning column 43 is inserted into the positioning hole. In specific implementation, a mounting hole 302 is provided in the middle of the spring steel plate 3, and a through hole 401 is formed in the middle of the leaf spring seat 4. The positioning column 43 of this embodiment, as a preferred embodiment, is a positioning bolt that passes through the through hole 401 and is screwed into the mounting hole 302. It has a simple structure and is easy to implement.

[0056] It should be noted that the spring steel plate 3 can be firmly fixed on the frame through the accommodating groove 41 and the limiting bolt 42 on the leaf spring seat 4, and the cooperation of the second connecting member 13 and the positioning structure.

[0057] Replay Figure 1 and Figure 2 As shown, in this embodiment, a buffer block 5 is provided on the frame at the end corresponding to the spring steel plate 3. The buffer block 5 includes a sheet metal bracket fixedly connected to the frame, and a rubber member installed on the sheet metal bracket. It has a simple structure and good rigidity. Moreover, the setting of the buffer block 5 can not only play a certain buffering role for the spring steel plate 3, but also limit the movement of the spring steel plate 3, thereby ensuring that the spring steel plate 3 moves within a certain range and avoiding the breakage caused by excessive deformation of the spring steel plate 3.

[0058] In addition, in this embodiment, a lower swing arm assembly 6 is provided at the lower end of each steering knuckle assembly 2, that is, at the lower end of each main body 21, and at least one of the lower swing arm assemblies 6 is provided with a shock absorber 7. The end of each lower swing arm assembly 6 away from the corresponding steering knuckle assembly 2 and the end of the shock absorber 7 away from the lower swing arm assembly 6 are both connected to the vehicle frame. The setting of the lower swing arm assembly 6 can play a role in restricting the change of the four-wheel alignment parameters when restricting the wheel bounce. The provided shock absorber 7 can play a buffering and shock-absorbing effect between the suspension structure and the vehicle frame.

[0059] As a preferred embodiment, each lower arm assembly 6 is provided with a shock absorber 7. Moreover, relative to the support arm 22, the lower arm assembly 6 is arranged at the rear side of the vehicle in the front-rear direction, so that the overall suspension structure is more compact. And the shock absorber 7 is arranged between the lower arm assembly 6 and the frame, which can also play a role of reverse damping during the up and down bouncing of the wheel, thereby reducing the number of wheel bouncing.

[0060] The transverse leaf spring type independent suspension structure of this embodiment, by setting the transverse leaf spring as a single spring steel plate 3 with a variable cross-section, and adopting an upper arrangement form of the spring steel plate 3, not only has a compact structure, high material utilization rate, and good performance, but also the transverse leaf spring can replace the upper wishbone assembly, spring assembly and stabilizer bar assembly of the traditional double wishbone suspension, and can play a multi-purpose role. At the same time, when applied to an unmanned material vehicle, the roll stiffness of the suspension can be greatly improved, thereby ensuring the roll performance of the vehicle when turning.

[0061] Embodiment 2

[0062] The present embodiment relates to an unmanned material vehicle, on which the transverse leaf spring independent suspension structure of the first embodiment is provided.

[0063] The unmanned material vehicle of this embodiment, by adopting the above-mentioned transverse leaf spring independent suspension structure, can not only greatly improve the roll stiffness of the suspension and ensure the roll performance of the whole vehicle when turning, but also has the characteristics of compact structure, high cost performance, good strength and good sports performance, while also effectively ensuring the handling stability and smoothness requirements of the whole vehicle.

[0064] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A transverse leaf spring type independent suspension structure, characterized in that: It comprises brake assemblies (1) arranged on the left and right sides, a steering knuckle assembly (2) arranged on each of the brake assemblies (1), and a transverse leaf spring; Each of the steering knuckle assemblies (2) comprises a main plate body (21) connected to the brake assembly (1), and a support arm (22) connected to the main plate body (21), wherein the support arm (22) extends upward in a vehicle height direction and is inclined toward one side of the vehicle interior; The two ends of the transverse leaf spring are respectively connected to the corresponding support arm (22) by ball joints, and the transverse leaf spring is a single spring steel plate (3) arranged along the width direction of the vehicle. In the width direction of the vehicle, the middle part of the spring steel plate (3) is arched upward along the height direction of the vehicle and is connected to the frame, and the thickness of the spring steel plate (3) is gradually reduced from the middle part to the end part.

2. The transverse leaf spring independent suspension structure according to claim 1, characterized in that: The spring steel plate (3) is connected to the vehicle frame via a leaf spring seat (4); The leaf spring seat (4) is provided with a receiving groove (41) for receiving the middle part of the spring steel plate (3), and the leaf spring seat (4) is provided with a limiting structure for limiting the spring steel plate (3) in the receiving groove (41).

3. The transverse leaf spring independent suspension structure according to claim 2, characterized in that: The limiting structure comprises a first limiting member arranged on the leaf spring seat (4), the first limiting member being capable of pressing the spring steel plate (3) against the groove wall of the accommodating groove (41); or, The limiting structure comprises second limiting members which are arranged opposite to each other and are provided on the leaf spring seat (4), and each of the second limiting members can be respectively pressed against the opposite side of the spring steel plate (3).

4. The transverse leaf spring independent suspension structure according to claim 1, characterized in that: A positioning structure is provided between the spring steel plate (3) and the vehicle frame.

5. The transverse leaf spring independent suspension structure according to claim 4 is characterized in that: The positioning structure comprises a positioning column (43) provided on one of the spring steel plate (3) and the frame, and a positioning hole provided on the other of the spring steel plate (3) and the frame; The positioning column (43) is inserted into the positioning hole.

6. The transverse leaf spring independent suspension structure according to claim 1, characterized in that: A buffer block (5) is provided on the frame at the end corresponding to the spring steel plate (3); and / or, The main board body (21) and the support arm (22) are integrally formed by forging.

7. The transverse leaf spring type independent suspension structure according to any one of claims 1 to 6, characterized in that: A lower swing arm assembly (6) is provided at the lower end of each main plate body (21), and at least one of the lower swing arm assemblies (6) is provided with a shock absorber (7); One end of each lower swing arm assembly (6) away from the corresponding steering knuckle assembly (2), and one end of the shock absorber (7) away from the lower swing arm assembly (6) are both connected to the vehicle frame.

8. An unmanned material vehicle, characterized in that: The unmanned material vehicle is provided with a transverse leaf spring independent suspension structure as described in any one of claims 1 to 7.

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