Steering axle assembly and vehicle

Abstract

The utility model belongs to vehicle technical field discloses steering axle assembly and vehicle, this steering axle assembly includes bridge pipe body, two wheel end structures, steering ware, vertical arm and pull rod subassembly, steering ware is integrally arranged on bridge pipe body, has cancelled the straight pull rod on traditional steering ware, has reduced the part kind and quantity of steering system, is favorable for reducing system cost, improves the light weight level of product, avoids the motion interference that suspension deformation caused by wheel bounce causes the steering, is more stable in the vehicle driving process, vertical arm is connected with the output shaft of steering ware, under the driving action of output shaft, vertical arm can swing around the central axis of output shaft, one end of pull rod subassembly is connected with wheel end structure, the other end of pull rod subassembly is connected with vertical arm, vertical arm swing drives pull rod subassembly to move along its axial movement, reduces the mechanical structure and transmission gap in the steering transmission process, improves the response performance and control precision of steering control.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, and in particular to a steering axle assembly and a vehicle. Background Technology

[0002] With the application of intelligent technology in the vehicle field, intelligent driving vehicles have become one of the most cutting-edge areas that society, enterprises, universities, and capital are vying to invest in. Electrification and intelligence have put forward new requirements for vehicle steering systems, while also providing new possibilities for the development of steering technology and steering solutions.

[0003] Current truck front axle steering systems use electric or hydraulic power steering, with the power assist mechanism transmitting power to the steering wheels via tie rods. Electric power steering adds a motor to the traditional mechanical or hydraulic power steering system to provide assistance. Steering transmission via tie rods or other mechanical mechanisms is complex and costly.

[0004] Therefore, there is an urgent need for a steering axle assembly and vehicle to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a steering axle assembly that eliminates the tie rod on the traditional steering gear, reduces the types and number of parts in the steering system, helps to reduce system costs, and avoids motion interference to steering caused by suspension deformation due to wheel bounce, resulting in a smoother vehicle ride.

[0006] To address the aforementioned problems in the existing technology, this utility model adopts the following technical solution:

[0007] The steering axle assembly includes:

[0008] Bridge tube body;

[0009] Two wheel end structures are respectively disposed at both ends of the bridge tube body;

[0010] Steering gear, which is integrated into the bridge tube body;

[0011] A drop arm is connected to the output shaft of the steering gear. Under the driving action of the output shaft, the drop arm can swing around the central axis of the output shaft.

[0012] A pull rod assembly, one end of which is connected to the wheel end structure, and the other end of which is connected to the drop arm.

[0013] Preferably, the steering axle assembly further includes a spline, the drop arm has a first mounting hole, and the spline passes through the first mounting hole and connects to the output shaft.

[0014] Preferably, the steering axle assembly further includes a first connector, and the drop arm is provided with a second mounting hole, through which the first connector passes and is connected to the tie rod assembly.

[0015] Preferably, the pull rod assembly includes an intermediate shaft, two ball heads, and two locking nuts. The two ends of the intermediate shaft are threadedly connected to the two ball heads respectively, and the two locking nuts are rotatably connected to the two ends of the intermediate shaft and can abut against the corresponding ball heads to lock and fix the intermediate shaft and the two ball heads.

[0016] Preferably, the steering axle assembly further includes a bracket, the steering gear is disposed between the bracket and the drop arm, the bracket includes a first fixing part, a second fixing part and a mounting part, the mounting part is connected to the steering gear, the first fixing part and the second fixing part are respectively connected to both sides of the mounting part, and both the first fixing part and the second fixing part have an arc-shaped welding surface, the arc-shaped welding surface is welded to the axle tube body.

[0017] Preferably, the steering axle assembly further includes a second connector and a third connector. The bracket has a U-shaped cross-section and multiple connection holes. The second connector passes through the corresponding connection hole and is connected to the housing of the output shaft. The third connector passes through the corresponding connection hole and is connected to the motor controller of the steering gear.

[0018] Preferably, the wheel end structure is provided with a connecting arm, the connecting arm is trapezoidal, and the wheel end structure is connected to one end of the pull rod assembly through the connecting arm.

[0019] Preferably, the steering axle assembly further includes a leaf spring seat, which is welded and fixed to the axle tube body.

[0020] Preferably, there are two pull rod assemblies, which are located between the two wheel end structures and respectively disposed on both sides of the drop arm.

[0021] To achieve the above objectives, this utility model also provides a vehicle including the aforementioned steering axle assembly.

[0022] The beneficial effects of this utility model are as follows:

[0023] The steering axle assembly provided by this utility model has two wheel-end structures respectively located at both ends of the axle tube body, and the steering gear integrated into the axle tube body. This eliminates the traditional tie rod in the steering gear, reducing the types and number of parts in the steering system, which helps to reduce system costs and improve the product's lightweight level. Furthermore, it avoids motion interference to steering caused by suspension deformation due to wheel bounce, resulting in a smoother vehicle ride. The drop arm is connected to the output shaft of the steering gear. Under the drive of the output shaft, the drop arm can swing around the central axis of the output shaft. One end of the tie rod assembly is connected to the wheel-end structure, and the other end of the tie rod assembly is connected to the drop arm. The swing of the drop arm drives the tie rod assembly to move along its axial direction, enabling the wheel to steer. This reduces the mechanical structure and transmission backlash in the steering transmission process, improving the response performance and control accuracy of steering control.

[0024] The vehicle provided by this utility model includes a steering axle assembly. The steering gear is integrated into the axle tube body, eliminating the tie rod in the traditional steering gear, reducing the types and number of parts in the steering system, which helps to reduce system costs and improve the product's lightweight level. Furthermore, it avoids motion interference to steering caused by suspension deformation due to wheel bounce, resulting in a smoother vehicle ride. Attached Figure Description

[0025] Figure 1 A first structural schematic diagram of the steering axle assembly provided in an embodiment of this utility model;

[0026] Figure 2 This is a second structural schematic diagram of the steering axle assembly provided in an embodiment of the present utility model;

[0027] Figure 3 A schematic diagram of the structure of the bracket provided in an embodiment of this utility model;

[0028] Figure 4 A schematic diagram of the structure of the hanging arm provided in an embodiment of this utility model;

[0029] Figure 5 A schematic diagram of the steering gear provided in an embodiment of this utility model;

[0030] Figure 6 This is a schematic diagram of the wheel end structure and connecting arm provided in an embodiment of the present utility model;

[0031] Figure 7 This is a schematic diagram of the structure of the tie rod assembly provided in an embodiment of the present utility model.

[0032] Figure label:

[0033] 1. Bridge tube body; 2. Wheel end structure; 3. Steering gear; 4. Drop arm; 5. Output shaft; 6. Spline; 7. First mounting hole; 8. Second mounting hole; 9. Intermediate shaft; 10. Ball joint; 11. Locking nut; 12. Bracket; 13. First fixing part; 14. Second fixing part; 15. Mounting part; 16. Arc-shaped welded surface; 17. Motor controller; 18. Connecting arm; 19. Leaf spring seat. Detailed Implementation

[0034] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0035] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0037] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0038] like Figures 1-7As shown, in this embodiment, the steering axle assembly includes an axle tube body 1, two wheel end structures 2, a steering gear 3, a drop arm 4, and a tie rod assembly. The two wheel end structures 2 are respectively disposed at both ends of the axle tube body 1. The steering gear 3 is integrated onto the axle tube body 1. The drop arm 4 is connected to the output shaft 5 of the steering gear 3. Under the driving action of the output shaft 5, the drop arm 4 can swing around the central axis of the output shaft 5. One end of the tie rod assembly is connected to the wheel end structure 2, and the other end of the tie rod assembly is connected to the drop arm 4.

[0039] A steering knuckle is provided at the end of the axle tube body 1. The wheel end structure 2 is fixed to the steering knuckle, and the wheel end structure 2 integrates the brake disc, brake caliper, etc. The steering gear 3 is integrated in the middle of the axle tube body 1, eliminating the tie rod on the traditional steering gear 3, reducing the types and number of steering system parts, which helps to reduce system costs and improve the product's lightweight level. In addition, it avoids the motion interference of suspension deformation caused by wheel bounce on steering, making the vehicle more stable during driving. The steering gear 3 includes a steering gear body, an output shaft 5, and a motor controller 17. There are two tie rod assemblies, which are located between the two wheel end structures 2 and respectively set on both sides of the drop arm 4. The output torque is output by the motor controller 17, and the speed reduction and torque increase control inside the steering gear body controls the rotation of the output shaft 5. The output shaft 5 is connected to the top of the drop arm 4 through a spline 6. The rotation of the output shaft 5 drives the drop arm 4 to swing back and forth around the central axis of the output shaft 5. The bottom of the drop arm 4 is connected to one end of the tie rod assembly by bolts, and the other end of the tie rod assembly is connected to the wheel end structure 2 by bolts. The swing arm 4 swings, causing the tie rod assembly to move along its axis, enabling the wheel to steer. This reduces the mechanical structure and transmission backlash in the steering transmission process, and improves the response performance and control accuracy of steering control.

[0040] Reference Figures 1-2 The steering axle assembly also includes a spline 6, and a first mounting hole 7 is provided on the drop arm 4. The spline 6 passes through the first mounting hole 7 and is connected to the output shaft 5. The output shaft 5 and the drop arm 4 are connected through the spline 6. When the output shaft 5 rotates, it drives the drop arm 4 to swing back and forth around the central axis of the output shaft 5. The swinging of the drop arm 4 drives the tie rod assembly to move along its axial direction, and the wheels achieve steering.

[0041] Continue to refer to Figures 1-2 The steering axle assembly also includes a first connecting member, and the drop arm 4 is provided with a second mounting hole 8. The first connecting member passes through the second mounting hole 8 and is connected to the tie rod assembly. The first connecting member is provided as a bolt. The drop arm 4 and the tie rod assembly are fixedly connected by the first connecting member. Under the swing action of the drop arm 4, the tie rod assembly moves along its axial direction, so that the wheel can be steered. This reduces the mechanical structure and transmission backlash in the steering transmission process and improves the response performance and control accuracy of steering control.

[0042] Reference Figure 1 and Figure 7 The tie rod assembly includes an intermediate shaft 9, two ball heads 10, and two locking nuts 11. Both ends of the intermediate shaft 9 are threadedly connected to the two ball heads 10. The two locking nuts 11 are rotatably connected to both ends of the intermediate shaft 9 and abut against the corresponding ball heads 10, thereby locking the intermediate shaft 9 and the two ball heads 10 in place. The inner circumference of the ball head 10 is provided with internal threads, and the end of the intermediate shaft 9 is provided with external threads. The two ball heads 10 are threadedly connected to both ends of the intermediate shaft 9, and the two locking nuts 11 can lock the intermediate shaft 9 and the two ball heads 10 in place.

[0043] Reference Figure 1 and Figure 4 The steering axle assembly also includes a bracket 12. The steering gear 3 is disposed between the bracket 12 and the drop arm 4. The bracket 12 includes a first fixing part 13, a second fixing part 14, and a mounting part 15. The mounting part 15 is connected to the steering gear 3. The first fixing part 13 and the second fixing part 14 are respectively connected to both sides of the mounting part 15, and both the first fixing part 13 and the second fixing part 14 have an arc-shaped welding surface 16, which is welded to the axle tube body 1. The steering axle assembly also includes a second connector and a third connector. The cross-sectional shape of the bracket 12 is U-shaped, which is simple and reliable. The bracket 12 has multiple connection holes. The second connector passes through the corresponding connection hole and is connected to the housing of the output shaft 5. The third connector passes through the corresponding connection hole and is connected to the motor controller 17 of the steering gear 3. The mounting part 15 is fixedly connected to the output shaft 5 of the steering gear 3 through the second connector, and the mounting part 15 is fixedly connected to the motor controller 17 of the steering gear 3 through the third connector. The bottom of the first fixing part 13 and the second fixing part 14 have arc-shaped welding surfaces 16, which are welded to the axle tube body 1 as a whole. This allows the steering gear 3 to be integrated onto the axle tube body 1 via the bracket 12, eliminating the traditional tie rod on the steering gear 3, reducing the types and number of parts in the steering system, which helps to reduce system costs and improve the product's lightweight level. Furthermore, it avoids motion interference to the steering caused by suspension deformation due to wheel bounce, resulting in a smoother vehicle ride.

[0044] Continue to refer to Figure 1 and Figure 2 The wheel end structure 2 is provided with a connecting arm 18, which has a trapezoidal structure. The wheel end structure 2 is connected to one end of the tie rod assembly through the connecting arm 18. The steering axle assembly also includes a leaf spring seat 19, which is welded and fixed to the axle tube body 1. There are two leaf spring seats 19, which are welded to both ends of the axle tube body 1 respectively.

[0045] Preferably, the steering axle assembly has a drive-by-wire function, which enables steering at the left and right wheel ends when receiving external control commands, thus better supporting intelligent driving.

[0046] This embodiment also provides a vehicle including the aforementioned steering axle assembly. The steering gear 3 is integrated onto the axle tube body 1, eliminating the traditional tie rod on the steering gear 3, reducing the types and number of parts in the steering system, which helps to reduce system costs and improve the product's lightweight level. Furthermore, it avoids motion interference to steering caused by suspension deformation due to wheel bounce, resulting in a smoother vehicle ride.

[0047] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A steering axle assembly, characterized in that, include: Bridge tube body(1); Two wheel end structures (2) are respectively disposed at both ends of the bridge tube body (1); Steering gear (3), the steering gear (3) is integrated on the bridge tube body (1); A vertical arm (4) is connected to the output shaft (5) of the steering gear (3). Under the driving action of the output shaft (5), the vertical arm (4) can swing around the central axis of the output shaft (5). A pull rod assembly, one end of which is connected to the wheel end structure (2), and the other end of which is connected to the drop arm (4).

2. The steering axle assembly according to claim 1, characterized in that, The steering axle assembly also includes a spline (6), the drop arm (4) has a first mounting hole (7), and the spline (6) passes through the first mounting hole (7) and is connected to the output shaft (5).

3. The steering axle assembly according to claim 1, characterized in that, The steering axle assembly also includes a first connector, and the drop arm (4) is provided with a second mounting hole (8). The first connector passes through the second mounting hole (8) and is connected to the tie rod assembly.

4. The steering axle assembly according to claim 1, characterized in that, The pull rod assembly includes an intermediate shaft (9), two ball heads (10) and two locking nuts (11). The two ends of the intermediate shaft (9) are threadedly connected to the two ball heads (10) respectively. The two locking nuts (11) are rotatably connected to the two ends of the intermediate shaft (9) and can abut against the corresponding ball heads (10) to lock and fix the intermediate shaft (9) and the two ball heads (10).

5. The steering axle assembly according to claim 1, characterized in that, The steering axle assembly also includes a bracket (12), and the steering gear (3) is disposed between the bracket (12) and the drop arm (4). The bracket (12) includes a first fixing part (13), a second fixing part (14) and a mounting part (15). The mounting part (15) is connected to the steering gear (3). The first fixing part (13) and the second fixing part (14) are respectively connected to both sides of the mounting part (15), and both the first fixing part (13) and the second fixing part (14) have an arc-shaped welding surface (16). The arc-shaped welding surface (16) is welded to the axle tube body (1).

6. The steering axle assembly according to claim 5, characterized in that, The steering axle assembly also includes a second connector and a third connector. The cross-sectional shape of the bracket (12) is U-shaped. The bracket (12) has multiple connection holes. The second connector passes through the corresponding connection hole and is connected to the housing of the output shaft (5). The third connector passes through the corresponding connection hole and is connected to the motor controller (17) of the steering gear (3).

7. The steering axle assembly according to claim 1, characterized in that, The wheel end structure (2) is provided with a connecting arm (18), which is trapezoidal in shape. The wheel end structure (2) is connected to one end of the pull rod assembly through the connecting arm (18).

8. The steering axle assembly according to claim 1, characterized in that, The steering axle assembly also includes a leaf spring seat (19), which is welded and fixed to the axle tube body (1).

9. The steering axle assembly according to claim 1, characterized in that, There are two tie rod assemblies, which are located between the two wheel end structures (2) and respectively on both sides of the vertical arm (4).

10. A vehicle, characterized in that, Includes the steering axle assembly as described in any one of claims 1-9.

Images