A vehicle

Abstract

The application discloses a vehicle, and belongs to the technical field of automobiles, which comprises a vehicle frame, a steering system and vehicle wheels; the steering system comprises a steering control mechanism, a steering gear assembly, a steering gear support, a transmission assembly, a steering linkage and a steering assist mechanism; wherein the steering gear support comprises a main mounting plate and connecting plates, the main mounting plate is arranged to extend along the front-rear direction of the vehicle, and the connecting plates extend to the left-right direction of the vehicle to be connected to the vehicle frame; the main mounting plate and the two connecting plates and the vehicle frame enclose an avoidance space; the steering gear assembly is installed on the side of the main mounting plate away from the avoidance space; the steering linkage comprises a steering rocker arm and a steering straight link, the steering rocker arm is arranged in the avoidance space, the first end of the steering rocker arm is connected to the steering gear assembly, the second end of the steering rocker arm is connected to the steering straight link, and the steering straight link is connected to the vehicle wheels; the application optimizes the spatial layout, is more compact in overall arrangement on the basis of ensuring transmission integrity, and improves the space utilization.

Description

Technical Field

[0001] This application relates to the field of automotive technology, and more specifically, to a vehicle. Background Technology

[0002] The design highlight of the medium-duty low-entry sanitation vehicle is that, while meeting design standards, the front step of the vehicle needs to be low and wide enough to ensure convenient entry and exit for passengers and stable and comfortable footing. To meet this requirement, the space gap between the front step and the front frame needs to be reduced, which makes the design and layout of the steering system more difficult. Existing vehicle structures often suffer from unreasonable steering system layout and low space utilization. Utility Model Content

[0003] This application aims to provide a vehicle that addresses the problems of unreasonable steering system layout and low space utilization in existing medium-duty low-entry sanitation vehicles.

[0004] A vehicle includes: a frame, a steering system, and wheels;

[0005] The steering system includes a steering control mechanism, a steering gear assembly, a steering gear bracket, a transmission assembly, a steering linkage, and a steering assist mechanism;

[0006] The steering gear bracket includes a main mounting plate and connecting plates connected to both ends of the main mounting plate; the main mounting plate extends along the front-rear direction of the vehicle, and the connecting plates extend along the left-right direction of the vehicle to connect with the vehicle frame; the main mounting plate, the two connecting plates, and the vehicle frame enclose a clearance space.

[0007] The steering assembly is mounted on the side of the main mounting plate opposite to the clearance space; the input end of the steering assembly is connected to the output end of the transmission assembly, and the input end of the transmission assembly is connected to the output end of the steering control mechanism; the output end of the steering assembly is connected to the steering linkage, which includes a steering rocker arm and a steering tie rod. The steering rocker arm is arranged within the clearance space, and a first end of the steering rocker arm is connected to the steering assembly, a second end of the steering rocker arm is connected to the steering tie rod, and the end of the steering tie rod away from the steering rocker arm is connected to the wheel.

[0008] The output end of the steering assist mechanism is connected to the steering gear assembly and is used to provide steering assistance to the steering gear assembly.

[0009] Optionally, the steering gear bracket further includes two adapters, each corresponding to one of the two connecting plates; the ends of the adapters are fixedly connected to the vehicle frame, and the sides of the adapters are attached to and connected to the connecting plates.

[0010] Optionally, a reinforcing plate is provided at the corner of the connecting plate and the main mounting plate. The reinforcing plate is triangular in shape, with its first side connected to the connecting plate and its second side connected to the main mounting plate.

[0011] Optionally, the reinforcing plate is provided in multiple sets, including a first reinforcing plate and a second reinforcing plate. Along the height direction of the vehicle, the first reinforcing plate is close to the first end of the steering rocker arm, and the second reinforcing plate is close to the second end of the steering rocker arm. The area of ​​the second reinforcing plate is smaller than the area of ​​the first reinforcing plate.

[0012] Optionally, the second end of the steering rocker arm is tilted towards the vehicle frame relative to the first end of the steering rocker arm.

[0013] Optionally, the steering mechanism includes a steering wheel assembly and a steering column assembly, and the transmission assembly includes a first driveshaft and an intermediate reversing transmission structure; the steering wheel assembly, the steering column assembly, and the first driveshaft are sequentially connected along the height direction of the vehicle; the intermediate reversing transmission structure and the steering gear assembly are arranged on the vehicle frame along the longitudinal direction of the vehicle, and the steering gear assembly is positioned rearward relative to the intermediate reversing transmission structure; the input end of the intermediate reversing transmission structure is connected to the first driveshaft, and the output end of the intermediate reversing transmission structure is connected to the steering gear assembly.

[0014] Optionally, the axis of the steering assembly is arranged along the longitudinal direction of the vehicle, and the input end of the steering assembly faces the intermediate reversing drive structure.

[0015] Optionally, the intermediate reversing transmission structure includes a steering commutator, a commutator bracket, and a second drive shaft; the commutator bracket is fixed to the side of the vehicle frame, the steering commutator is mounted on the commutator bracket, and the input end and output end of the steering commutator are set at an angle; the input end of the steering commutator is connected to the output end of the first drive shaft, the output end of the steering commutator is connected to the input end of the second drive shaft, and the output end of the second drive shaft is connected to the steering gear assembly.

[0016] Optionally, the commutator bracket includes a first connecting part and a second connecting part that are connected to each other. The first connecting part is arranged along the height direction of the vehicle and is fitted to the side of the vehicle frame. The second connecting part is arranged along the left and right direction of the vehicle, and the steering commutator is mounted on the second connecting part.

[0017] Optionally, the power steering mechanism includes a power steering reservoir, a power steering reservoir bracket, power steering hoses, a power steering pump bracket, and a power steering pump; the power steering reservoir and the power steering pump are respectively mounted on the vehicle frame via the power steering reservoir bracket and the power steering pump bracket; the outlet of the power steering reservoir is connected to the inlet of the power steering pump, the outlet of the power steering pump is connected to the inlet of the steering gear assembly, and the outlet of the steering gear assembly is connected to the inlet of the power steering reservoir via a power steering hose; the power steering pump is used to deliver hydraulic oil from the power steering reservoir to the steering gear assembly to provide hydraulic power assistance to the steering gear assembly.

[0018] Beneficial effects:

[0019] The vehicle described in this application includes a frame, a steering system, and wheels. The steering system includes a steering control mechanism, a steering gear assembly, a steering gear bracket, a transmission assembly, a steering linkage, and a steering assist mechanism. The steering gear bracket includes a main mounting plate and connecting plates connected to both ends of the main mounting plate. The main mounting plate extends along the longitudinal direction of the vehicle, and the connecting plates extend along the lateral direction of the vehicle to connect with the frame. The main mounting plate, the two connecting plates, and the frame enclose a clearance space. The steering gear assembly is mounted on the side of the main mounting plate away from the clearance space. The input end of the steering gear assembly is connected to the output end of the steering control mechanism via the transmission assembly. The output end of the steering gear assembly is connected to the steering linkage, which includes a steering rocker arm and a steering tie rod. The steering rocker arm is arranged within the clearance space, with its first end connected to the steering gear assembly and its second end connected to the steering tie rod, which is connected to the wheel. The output end of the steering assist mechanism is connected to the steering gear assembly to provide steering assistance. This application optimizes the structure of the steering gear bracket, creating a clearance space between the steering gear bracket and the vehicle frame. The steering gear assembly is installed outside the clearance space, and the steering rocker arm is arranged inside the clearance space. This optimizes the spatial layout, making the overall arrangement more compact and improving space utilization while ensuring the integrity of the transmission. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the arrangement of the steering system and frame of a vehicle according to an embodiment of this application;

[0022] Figure 2This is a schematic diagram of the arrangement of the steering gear bracket, steering gear assembly and vehicle frame in a vehicle according to an embodiment of this application;

[0023] Figure 3 This is a schematic diagram of the structure of a steering gear bracket in a vehicle according to an embodiment of this application;

[0024] Figure 4 This is a schematic diagram of the structure of a steering rocker arm in a vehicle according to an embodiment of this application;

[0025] Figure 5 This is a schematic diagram of the structure of the front pedal of a vehicle according to an embodiment of this application.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Steering wheel assembly; 2. Steering column assembly; 3. Dustproof bushing; 4. First driveshaft; 5. Steering commutator; 6. Commutator bracket; 7. Second driveshaft; 8. Steering gear assembly; 9. Steering rocker arm; 9.1 First end of steering rocker arm; 9.2 Second end of steering rocker arm; 10. Steering gear bracket; 10.1 Main mounting plate; 10.2 Connecting plate; 10.3 Clearance space; 10.4 Adapter; 10.5 First reinforcing plate; 10.6 Second reinforcing plate; 11. Steering tie rod; 12. Steering fluid reservoir; 13. Steering fluid reservoir bracket; 14. Steering fluid line; 15. Steering electric pump bracket; 16. Steering electric pump; 17. Frame; 18. Front pedal. Detailed Implementation

[0028] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0029] Among related technologies, the design highlight of medium-duty low-entry sanitation vehicle models is that, while meeting design standards, the front step of the vehicle needs to be low and wide enough to ensure convenient entry and exit for passengers and stable and comfortable footing. To meet this requirement, the space gap between the front step and the front frame needs to be reduced, which makes the design and layout of the steering system more difficult. Existing vehicle structures often suffer from unreasonable steering system layout and low space utilization.

[0030] In view of this, this application proposes a vehicle. It should be noted that in the accompanying drawings of this embodiment, the x-axis represents the front-to-back direction of the vehicle (the positive x-axis points forward of the vehicle), the y-axis represents the left-to-right direction of the vehicle (the positive y-axis points to the left of the vehicle), and the z-axis represents the height direction of the vehicle (the positive z-axis points upward of the vehicle).

[0031] See Figure 1 A vehicle includes a frame 17, a steering system, and wheels; the steering system includes a steering control mechanism, a steering gear assembly 8, a steering gear bracket 10, a transmission assembly, a steering linkage, and a steering assist mechanism.

[0032] The steering gear bracket 10 includes a main mounting plate 10.1 and connecting plates 10.2 connected to both ends of the main mounting plate 10.1; the main mounting plate 10.1 extends along the front-rear direction of the vehicle, and the connecting plates 10.2 extend along the left-right direction of the vehicle to connect with the frame 17; the main mounting plate 10.1, the two connecting plates 10.2 and the frame 17 enclose a clearance space 10.3.

[0033] The steering assembly 8 is mounted on the side of the main mounting plate 10.1 facing away from the clearance space 10.3; the input end of the steering assembly 8 is connected to the output end of the transmission component, and the input end of the transmission component is connected to the output end of the steering control mechanism; the output end of the steering assembly 8 is connected to the steering linkage, which includes a steering rocker arm 9 and a steering tie rod 11. The steering rocker arm 9 is arranged within the clearance space 10.3, and a first end of the steering rocker arm 9 is connected to the steering assembly 8, a second end of the steering rocker arm 9 is connected to the steering tie rod 11, and the end of the steering tie rod 11 away from the steering rocker arm 9 is connected to the wheel; the output end of the power steering mechanism is connected to the steering assembly 8 to provide steering assistance to the steering assembly 8.

[0034] Specifically, the steering system includes a steering control mechanism, a steering gear assembly 8, a steering gear bracket 10, a transmission assembly, a steering linkage, and a power steering mechanism. The steering gear assembly 8 is mounted to the vehicle frame 17 via the steering gear bracket 10. The output end of the steering control mechanism is connected to the input end of the transmission assembly, the output end of the transmission assembly is connected to the input end of the steering gear assembly 8, the output end of the steering gear assembly 8 is connected to the input end of the steering linkage, the output end of the steering linkage is connected to the wheel, and the output end of the power steering mechanism is connected to the steering gear assembly 8. Thus, when steering, the steering force input by the driver through the steering control mechanism is transmitted along the transmission assembly to the steering gear assembly 8. At the same time, the power steering mechanism provides steering assistance to the steering gear assembly 8, driving the steering linkage to move and ultimately steering the wheel, ensuring the integrity of power transmission.

[0035] See Figure 3 In this embodiment, the steering gear bracket 10 adopts a frame structure, including a main mounting plate 10.1 and connecting plates 10.2 connected to both ends of the main mounting plate 10.1. The main mounting plate 10.1 extends along the longitudinal direction of the vehicle, and the connecting plates 10.2 extend along the lateral direction of the vehicle. One end of the connecting plate 10.2 is connected to the main mounting plate 10.1, and the other end is connected to the vehicle frame 17. The main mounting plate 10.1, the two connecting plates 10.2, and the vehicle frame 17 together form an approximately rectangular frame structure, with a clearance space 10.3 in the middle. The steering gear assembly is installed on the side of the main mounting plate 10.1 away from the clearance space 10.3, that is, on the outside of the clearance space 10.3 shown in the figure.

[0036] The steering linkage includes a steering rocker arm 9 and a steering tie rod 11. The steering rocker arm 9 is mounted on the steering gear assembly 8. Specifically, the first end 9.1 of the steering rocker arm is connected to the steering gear assembly 8, and the second end 9.2 of the steering rocker arm is connected to the steering tie rod 11. The other end of the steering tie rod 11 is ultimately connected to the wheel through a transmission component. The power output from the steering gear assembly 8 can drive the second end 9.2 of the steering rocker arm to rotate and swing around its first end 9.1, thereby driving the steering tie rod 11 to move and ultimately steering the wheel. In this embodiment, the steering gear bracket 10 adopts a frame structure. After the steering gear bracket 10 is mounted on the vehicle frame 17, a clearance space 10.3 is formed between the steering gear bracket 10 and the vehicle frame 17, providing space for the installation of the steering rocker arm 9. Arranging the steering rocker arm 9 within the clearance space 10.3 improves space utilization and reduces the risk of interference between the steering rocker arm 9 and the steering gear bracket 10.

[0037] With the above configuration, the steering gear bracket 10 adopts a frame structure. After the steering gear bracket 10 and the vehicle frame 17 are installed, a clearance space 10.3 can be formed between them. The steering gear assembly 8 is installed on the outside of the clearance space 10.3, and the steering rocker arm 9 is arranged inside the clearance space 10.3. This optimizes the spatial layout and makes the overall arrangement more compact. While ensuring normal steering transmission function, it improves the space utilization rate and can meet the design requirements of medium-duty low-entry sanitation vehicles.

[0038] Optionally, the steering gear bracket 10 further includes two adapters 10.4, which are respectively provided for the two connecting plates 10.2; the ends of the adapters 10.4 are connected and fixed to the vehicle frame 17, and the sides of the adapters 10.4 are attached to and connected to the connecting plates 10.2.

[0039] Specifically, in this embodiment, to further facilitate the connection between the connecting plate 10.2 and the frame 17, two adapters 10.4 are provided. The two adapters 10.4 are respectively positioned corresponding to the two connecting plates 10.2 and extend along the left-right direction of the vehicle. The ends of the adapters 10.4 are fixedly connected to the frame 17, and the sides of the adapters 10.4 are in contact with the connecting plates 10.2. Both the adapters 10.4 and the frame 17, and the adapters 10.4 and the connecting plates 10.2, can be connected using bolts or fasteners. By providing the adapters 10.4, the connection area can be increased, thereby enhancing the connection strength between the steering gear bracket 10 and the frame 17.

[0040] Preferably, a reinforcing structure can also be provided at the end of the adapter 10.4 near the frame 17, such as... Figure 3 As shown, the cross-sectional area of ​​the reinforcing structure gradually increases from one end of the connecting plate 10.2 to the other end of the frame 17, which helps to improve the structural strength of the adapter 10.4, increase the connection area between the adapter 10.4 and the frame 17, and further ensure the stability and reliability of the connection.

[0041] Optionally, a reinforcing plate is provided at the corner of the connecting plate 10.2 and the main mounting plate 10.1. The reinforcing plate is triangular in shape, with its first side connected to the connecting plate 10.2 and its second side connected to the main mounting plate 10.1.

[0042] Specifically, in this embodiment, the main mounting plate 10.1 and the connecting plate 10.2 are arranged perpendicularly. To further ensure the reliability of the connection, a reinforcing plate is provided at the corner of the main mounting plate 10.1 and the connecting plate 10.2. Specifically, the shape of the reinforcing plate can be set as a triangle. The first side of the reinforcing plate is connected to the connecting plate 10.2, and the second side of the reinforcing plate is connected to the main mounting plate 10.1. Since the triangle has stability, the reinforcing plate can provide stable support for the main mounting plate 10.1 and the connecting plate 10.2, optimize the stress distribution, and thus help resist structural deformation.

[0043] In other embodiments, the reinforcing plate may also be configured as a trapezoid or other suitable shape as needed.

[0044] Optionally, the reinforcing plate is provided in multiple sets, including a first reinforcing plate 10.5 and a second reinforcing plate 10.6. Along the height direction of the vehicle, the first reinforcing plate 10.5 is close to the first end 9.1 of the steering rocker arm, and the second reinforcing plate 10.6 is close to the second end 9.2 of the steering rocker arm. The area of ​​the second reinforcing plate 10.6 is smaller than the area of ​​the first reinforcing plate 10.5.

[0045] In practical applications, multiple sets of reinforcing plates can be provided as needed. As an example, in this embodiment, two sets of reinforcing plates are provided, each set including two reinforcing plates distributed at both ends of the main mounting plate 10.1. One set is the first reinforcing plate 10.5, and the other is the second reinforcing plate 10.6. Along the height direction of the vehicle, the first reinforcing plate 10.5 is positioned above the main mounting plate 10.1, near the first end 9.1 of the steering rocker arm, while the second reinforcing plate 10.6 is positioned below the main mounting plate 10.1, near the second end 9.2 of the steering rocker arm 9. Since the second end 9.2 of the steering rocker arm 9 will swing back and forth during operation, to further prevent motion interference, the area of ​​the second reinforcing plate 10.6 is set to be smaller than that of the first reinforcing plate 10.5. This ensures structural strength while avoiding obstruction and interference to the steering rocker arm 9, thus ensuring the stable and reliable operation of the steering system.

[0046] Optionally, the second end 9.2 of the steering rocker arm is tilted towards the frame 17 relative to the first end 9.1 of the steering rocker arm.

[0047] For ease of description, the side of the steering gear bracket 10 facing the frame 17 is defined as the inner side of the steering gear bracket 10, and the side of the steering gear bracket 10 facing away from the frame 17 is defined as the outer side of the steering gear bracket 10. For details, see [link to documentation]. Figure 3 and Figure 4 In this embodiment, the steering rocker arm 9 is arranged in the clearance space 10.3, located inside the steering gear bracket 10. The steering gear assembly 8 is fixed to the outside of the steering gear bracket 10 by bolts and fasteners. A portion of the output end of the steering gear assembly 8 passes through the steering gear bracket 10 and enters the clearance space 10.3 to connect with the steering rocker arm 9. The first end 9.1 of the steering rocker arm is connected to the output end of the steering gear assembly 8, and the second end 9.2 of the steering rocker arm is connected to the steering tie rod 11. Since the second end 9.2 of the steering rocker arm swings around the first end 9.1, in order to further avoid interference between the steering rocker arm 9 and the steering gear bracket 10 when the steering rocker arm 9 moves, the second end 9.2 of the steering rocker arm is deflected towards the vehicle frame 17 relative to the first end 9.1, that is, deflected towards the inside of the steering gear bracket 10. Therefore, when the steering rocker arm 9 moves back and forth to its limit position, it can effectively avoid the bolts and fasteners on the steering gear bracket 10, ensuring the normal and stable operation of the steering system.

[0048] Optionally, the power steering mechanism includes a power steering reservoir 12, a power steering reservoir bracket 13, a power steering hose 14, a power steering pump bracket 15, and a power steering pump 16. The power steering reservoir 12 and the power steering pump 16 are mounted on the vehicle frame 17 via the power steering reservoir bracket 13 and the power steering pump bracket 15, respectively. A power steering hose 14 connects the outlet of the power steering reservoir 12 to the inlet of the power steering pump 16, the outlet of the power steering pump 16 to the inlet of the steering assembly 8, and the outlet of the steering assembly 8 to the inlet of the power steering reservoir. The power steering pump 16 delivers hydraulic oil from the power steering reservoir 12 to the steering assembly 8, thereby providing hydraulic power assistance to the steering assembly 8. The output of the steering assembly 8 is connected to the input of the steering linkage, and the output of the steering linkage is connected to the wheel. The power output from the steering assembly 8 can then be transmitted along the steering linkage to the wheel, ultimately achieving wheel steering.

[0049] The design requirements of medium-duty low-entry sanitation trucks drastically reduce the space between the front pedals and the front frame. Currently, medium-duty trucks come standard with large-bore steering systems, which are mature, platform-based products. Developing a new steering system with smaller dimensions would incur extremely high development costs and impact the new product development cycle. Furthermore, a small-bore steering system cannot provide sufficient torque output for the steering system. Therefore, the current technical challenge in developing medium-duty low-entry sanitation trucks lies in balancing the limited space between the front pedals and the frame with the need for a large-bore steering system while also providing ample space for lowering and widening the first-stage pedal. This presents a significant design constraint.

[0050] To address the aforementioned issues, this embodiment further optimizes the positional layout of the steering control mechanism, transmission components, and steering gear assembly 8.

[0051] Preferably, the steering control mechanism includes a steering wheel assembly 1 and a steering column assembly 2, and the transmission assembly includes a first drive shaft 4 and an intermediate reversing transmission structure; the steering wheel assembly 1, the steering column assembly 2 and the first drive shaft 4 are sequentially connected along the height direction of the vehicle; the intermediate reversing transmission structure and the steering gear assembly 8 are arranged on the vehicle frame 17 along the longitudinal direction of the vehicle, and the steering gear assembly 8 is positioned rearward relative to the intermediate reversing transmission structure; the input end of the intermediate reversing transmission structure is connected to the first drive shaft 4, and the output end of the intermediate reversing transmission structure is connected to the steering gear assembly 8.

[0052] See Figure 1 and Figure 2Specifically, the steering wheel assembly 1, the steering column assembly 2, and the first drive shaft 4 are arranged sequentially along the height direction of the vehicle. The steering wheel assembly 1 is fixed to the steering column assembly 2, the steering column assembly 2 is fixed to the vehicle body bracket, and the upper end of the first drive shaft 4 is connected to the lower end of the steering column assembly 2 via a spline.

[0053] The central steering drive structure and the steering gear assembly 8 are arranged along the longitudinal direction of the vehicle. The central steering drive structure is located below the steering wheel assembly 1, and the steering gear assembly 8 is positioned further rearward than the central steering drive structure, that is, diagonally below and rearward of the steering wheel assembly 1. The steering gear assembly 8 is fixed to the frame 17 via the steering gear bracket 10, as shown below. Figure 1 As shown, in this embodiment, the steering gear bracket 10 is fixed to the side of the vehicle frame 17, and the steering gear assembly 8 is installed on the side of the steering gear bracket 10 away from the vehicle frame 17.

[0054] The intermediate reversing transmission structure is arranged between the steering wheel assembly 1 and the steering gear assembly 8, serving as a transitional connection. Specifically, the input end of the intermediate reversing transmission structure is connected to the first drive shaft 4, and the output end of the intermediate reversing transmission structure is connected to the steering gear assembly 8, thereby realizing the transmission of power from the steering wheel assembly 1 to the steering gear assembly 8.

[0055] Unlike existing technologies that place the steering gear assembly directly below the steering wheel assembly, in this embodiment, the steering gear assembly 8 is located diagonally below and rearward of the steering wheel assembly 1. By moving the installation position of the steering gear assembly 8 rearward, space is freed up for the design of the front pedal 18, satisfying the design requirements of a sufficiently low and wide front pedal 18, ensuring convenience for passengers getting in and out of the vehicle and stability and comfort when using the pedals. It also meets the configuration requirements of large-bore steering gear assemblies in the development of medium-duty trucks. In this embodiment, a central reversing transmission structure is arranged below the steering wheel assembly 1, which is the location where the steering gear assembly is installed in existing technologies. Its dimensions are sufficiently small compared to the steering gear assembly 8, so it does not affect the design of the front pedal 18. Simultaneously, it enables a transitional connection between the steering wheel assembly 1 and the steering gear assembly 8, ensuring reliable power transmission and thus ensuring the structural integrity of the steering system.

[0056] Through the above-mentioned configuration, this application embodiment can not only solve the space requirement of low and wide front pedals, but also build the integrity of the steering system structure while meeting the high torque steering system requirements of the whole vehicle, thus perfectly realizing the development highlight goal of low entry-level medium-duty truck models.

[0057] Optionally, the axis of the steering assembly 8 is arranged along the longitudinal direction of the vehicle, and the input end of the steering assembly 8 faces the intermediate reversing transmission structure.

[0058] See Figure 1In this embodiment, the steering assembly 8 adopts a horizontal layout. Specifically, the axis of the steering assembly 8 is arranged along the longitudinal direction of the vehicle, and the input end of the steering assembly 8 faces the intermediate reversing transmission structure, facilitating connection with the output end of the intermediate reversing transmission structure to achieve power transmission. Compared with the prior art method of vertically arranging the steering assembly at a certain angle between the front pedal and the front frame, this embodiment moves the installation position of the steering assembly 8 rearward and adopts a horizontal layout, solving the problem of limited space for steering assembly arrangement, while also helping to simplify the design of the intermediate reversing transmission structure and reduce structural weight.

[0059] Optionally, the intermediate reversing transmission structure includes a steering commutator 5, a commutator bracket 6, and a second drive shaft 7; the commutator bracket 6 is fixed to the side of the vehicle frame 17, the steering commutator 5 is mounted above the commutator bracket 6, and the input end and output end of the steering commutator 5 are set at an angle; the input end of the steering commutator 5 is connected to the output end of the first drive shaft 4, the output end of the steering commutator 5 is connected to the input end of the second drive shaft 7, and the output end of the second drive shaft 7 is connected to the steering assembly 8.

[0060] Specifically, the intermediate reversing transmission structure includes a steering commutator 5, a commutator bracket 6, and a second driveshaft 7. The commutator bracket 6 serves as the mounting base for the steering commutator 5, fixed to the side of the frame 17. By mounting the steering commutator 5 above the commutator bracket 6, the connection between the steering commutator 5 and the frame 17 is secured, ensuring relative stability during operation. Because the steering assembly 8 is moved rearward and the steering commutator 5 and the second driveshaft 7 are added between the first driveshaft 4 and the steering assembly 8, a change in transmission angle occurs. To ensure smooth transmission, the transmission angle design of the first driveshaft 4 and the second driveshaft 7 must meet the condition that the steering undulation rate k ≤ 0.15, in order to obtain better transmission performance and improve the driving experience.

[0061] See Figure 1 and Figure 2 In this embodiment, the second driveshaft 7 is arranged along the longitudinal direction of the vehicle to transmit power to the steering assembly 8. The first driveshaft 4 is arranged in the height direction of the vehicle, forming an angle with the second driveshaft 7. The steering commutator 5 is arranged between the first driveshaft 4 and the second driveshaft 7. The input end of the steering commutator 5 is connected to the output end of the first driveshaft 4, and the output end of the steering commutator 5 is connected to the input end of the second driveshaft 7. The input and output ends of the steering commutator 5 are also arranged at an angle to adapt to the angle between the first driveshaft 4 and the second driveshaft 7, ultimately realizing the reversal and transmission of power.

[0062] Spline connections can be used between the first drive shaft 4 and the steering commutator 5, between the steering commutator 5 and the second drive shaft 7, and between the second drive shaft 7 and the steering assembly 8.

[0063] Optionally, the commutator bracket 6 includes a first connecting part and a second connecting part that are connected to each other. The first connecting part is arranged along the height direction of the vehicle and is fitted to the side of the vehicle frame. The second connecting part is arranged along the left and right direction of the vehicle, and the steering commutator is mounted on the second connecting part.

[0064] Specifically, in this embodiment, the commutator bracket 6 can adopt an L-shaped plate structure with an L-shaped cross-section. Specifically, the commutator bracket 6 includes a first connecting part and a second connecting part that are interconnected. The first connecting part is arranged along the height direction of the vehicle, serving as the vertical portion of the L-shaped plate structure, and can be fixed to the side of the frame 17. The second connecting part is arranged along the left-right direction of the vehicle, serving as the horizontal portion of the L-shaped plate structure, and can be used to install the steering commutator 5. The connection between the first connecting part and the frame 17, and the connection between the second connecting part and the steering commutator 5, can both be achieved using bolt fasteners.

[0065] Preferably, a reinforcing plate can also be provided at the corner between the horizontal and vertical parts of the L-shaped plate structure. The reinforcing plate can also adopt a triangular structure to improve the strength and stability of the commutator bracket 6 and ensure the installation reliability of the steering commutator 5.

[0066] The vehicle provided in this application embodiment has the following working principle of its steering system: the steering wheel assembly 1 receives the steering torque output by the driver's hand force and transmits it to the steering column assembly 2 connected to it. The steering column assembly 2 transmits the torque to the first drive shaft 4, then to the steering commutator 5, and then to the steering gear assembly 8 via the second drive shaft 7. Finally, the steering electric pump 16 provides hydraulic assistance to the steering gear assembly 8 through the steering oil pipe 14, which drives the steering lever system to make left and right steering movements to meet the steering needs of turning left or right.

[0067] The vehicle provided in this application embodiment optimizes the structure of the steering gear bracket 10, creating a clearance space 10.3 between the steering gear bracket 10 and the frame 17. The steering gear assembly 8 is installed outside the clearance space 10.3, and the steering rocker arm 9 is arranged inside the clearance space 10.3. This optimizes the spatial layout, making the overall arrangement more compact and improving space utilization while ensuring transmission integrity. In addition, by moving the installation positions of the steering gear assembly 8 and the steering gear bracket 10 rearward and using a smaller intermediate reversing transmission structure to achieve a transition connection between the first drive shaft 4 and the steering gear assembly 8, the problem of space constraints between the front pedal and the large-diameter steering gear is solved. This not only meets the large-diameter steering gear layout requirements of the overall vehicle development needs but also creates the advantage of a low and wide front pedal 18, making it very suitable for the steering system layout design of medium-duty low-entry sanitation vehicles.

[0068] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0069] It should also be noted that, in this document, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, 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, and therefore should not be construed as a limitation of this application. Furthermore, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations, nor should they be construed as indicating or implying relative importance. Moreover, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements, but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. In the absence of further restrictions, an element defined by the phrase "includes a..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes the element.

[0070] The technical solutions provided in this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand this application, and the content of this specification should not be construed as a limitation of this application. Furthermore, for those skilled in the art, there will be different forms of changes in the specific implementation methods and application scope based on this application. It is neither necessary nor possible to exhaustively list all implementation methods here, and obvious changes or modifications derived therefrom are still within the protection scope of this application.

Claims

1. A vehicle, characterized in that, include: The frame (17), steering system, and wheels; The steering system includes a steering control mechanism, a steering gear assembly (8), a steering gear bracket (10), a transmission assembly, a steering linkage, and a steering assist mechanism; The steering gear bracket (10) includes a main mounting plate (10.1) and connecting plates (10.2) connected to both ends of the main mounting plate (10.1); the main mounting plate (10.1) extends along the front-rear direction of the vehicle, and the connecting plates (10.2) extend along the left-right direction of the vehicle to connect with the frame (17); the main mounting plate (10.1), the two connecting plates (10.2) and the frame (17) enclose a clearance space (10.3). The steering assembly (8) is mounted on the side of the main mounting plate (10.1) away from the clearance space (10.3); the input end of the steering assembly (8) is connected to the output end of the transmission component, and the input end of the transmission component is connected to the output end of the steering control mechanism; the output end of the steering assembly (8) is connected to the steering linkage, which includes a steering rocker arm (9) and a steering tie rod (11). The steering rocker arm (9) is arranged in the clearance space (10.3), and the first end (9.1) of the steering rocker arm is connected to the steering assembly (8), the second end (9.2) of the steering rocker arm is connected to the steering tie rod (11), and the end of the steering tie rod (11) away from the steering rocker arm (9) is connected to the wheel. The output end of the steering assist mechanism is connected to the steering gear assembly and is used to provide steering assistance to the steering gear assembly.

2. The vehicle according to claim 1, characterized in that: The steering gear bracket (10) also includes two adapters (10.4), which are respectively provided for the two connecting plates (10.2); The end of the adapter (10.4) is connected and fixed to the frame (17), and the side of the adapter (10.4) is attached to and connected to the connecting plate (10.2).

3. The vehicle according to claim 1, characterized in that: A reinforcing plate is also provided at the corner of the connecting plate (10.2) and the main mounting plate (10.1). The reinforcing plate is triangular in shape, with the first side of the reinforcing plate connected to the connecting plate (10.2) and the second side of the reinforcing plate connected to the main mounting plate (10.1).

4. The vehicle according to claim 3, characterized in that: The reinforcing plate is provided in multiple sets, including a first reinforcing plate (10.5) and a second reinforcing plate (10.6). Along the height direction of the vehicle, the first reinforcing plate (10.5) is close to the first end (9.1) of the steering rocker arm, and the second reinforcing plate (10.6) is close to the second end (9.2) of the steering rocker arm. The area of ​​the second reinforcing plate (10.6) is smaller than the area of ​​the first reinforcing plate (10.5).

5. The vehicle according to claim 1, characterized in that: The second end (9.2) of the steering rocker arm is tilted toward the frame (17) relative to the first end (9.1) of the steering rocker arm.

6. The vehicle according to claim 1, characterized in that: The steering mechanism includes a steering wheel assembly (1) and a steering column assembly (2), and the transmission assembly includes a first drive shaft (4) and an intermediate reversing transmission structure; The steering wheel assembly (1), the steering column assembly (2), and the first drive shaft (4) are connected sequentially along the height direction of the vehicle; the intermediate reversing transmission structure and the steering gear assembly (8) are arranged on the vehicle frame (17) along the front-rear direction of the vehicle, and the steering gear assembly (8) is positioned rearward relative to the intermediate reversing transmission structure; the input end of the intermediate reversing transmission structure is connected to the first drive shaft (4), and the output end of the intermediate reversing transmission structure is connected to the steering gear assembly (8).

7. The vehicle according to claim 6, characterized in that: The axis of the steering assembly (8) is arranged along the longitudinal direction of the vehicle, and the input end of the steering assembly (8) faces the intermediate reversing transmission structure.

8. The vehicle according to claim 6, characterized in that: The intermediate reversing transmission structure includes a steering commutator (5), a commutator bracket (6), and a second drive shaft (7). The commutator bracket (6) is fixed to the side of the vehicle frame (17), the steering commutator (5) is mounted on the commutator bracket (6), the input end of the steering commutator (5) and the output end of the steering commutator (5) are set at an angle; the input end of the steering commutator (5) is connected to the output end of the first drive shaft (4), the output end of the steering commutator (5) is connected to the input end of the second drive shaft (7), and the output end of the second drive shaft (7) is connected to the steering assembly (8).

9. The vehicle according to claim 6, characterized in that: The commutator bracket (6) includes a first connecting part and a second connecting part that are connected to each other. The first connecting part is arranged along the height direction of the vehicle and is attached to the side of the frame (17). The second connecting part is arranged along the left and right direction of the vehicle. The steering commutator (5) is mounted on the second connecting part.

10. The vehicle according to claim 1, characterized in that: The power steering mechanism includes a power steering reservoir (12), a power steering reservoir bracket (13), a power steering hose (14), a power steering pump bracket (15), and a power steering pump (16). The steering fluid reservoir (12) and the steering electric pump (16) are respectively mounted on the vehicle frame (17) via the steering fluid reservoir bracket (13) and the steering electric pump bracket (15); The oil outlet of the steering fluid reservoir (12) is connected to the oil inlet of the steering electric pump (16), the oil outlet of the steering electric pump (16) is connected to the oil inlet of the steering gear assembly (8), and the oil outlet of the steering gear assembly (8) is connected to the oil inlet of the steering fluid reservoir via a steering oil pipe (14). The electric steering pump (16) is used to deliver hydraulic oil from the steering reservoir (12) to the steering assembly (8) to provide hydraulic assistance to the steering assembly (8).

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