Maintenance-free steering knuckle assembly and vehicle

Abstract

The embodiment of the utility model provides a maintenance-free steering knuckle assembly and a vehicle, and relates to the technical field of steering knuckles. The maintenance-free steering knuckle assembly comprises a steering knuckle, and the steering knuckle is provided with a mounting groove, a first pin hole and a second pin hole. The main pin is provided with a first mounting section, a second mounting section and a third mounting section, and the diameter of the second mounting section is gradually reduced in the direction from the first mounting section to the third mounting section; one end of the front shaft is located in the mounting groove, the main pin is inserted into the steering knuckle sequentially through the first pin hole, the front shaft and the second pin hole, the first mounting section is located in the first pin hole, the second mounting section is correspondingly matched with the front shaft, and the third mounting section is partially located in the second pin hole; and the bearing assembly comprises a first bearing and a second bearing, the first bearing is arranged on the first mounting section in a sleeving mode and located in the first pin hole, the second bearing is arranged on the third mounting section in a sleeving mode and partially located in the second pin hole, and therefore the displacement amount of the master pin is directly limited through the second mounting section with the variable diameter, and the production cost is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of steering knuckles, and in particular to a maintenance-free steering knuckle assembly and a vehicle. Background Art

[0002] The steering knuckle is the core component of a vehicle's steering axle and a crucial element for steering. During driving, the knuckle not only bears the vehicle's vertical load—the weight of the vehicle itself, passengers, and cargo—but also withstands the axial loads caused by steering. Therefore, the knuckle must possess sufficient strength and rigidity to prevent deformation or fracture under complex operating conditions.

[0003] Steering knuckle assemblies are typically maintained by regularly injecting grease into the mating area between the kingpin and the steering knuckle. Bearings are used between the front axle and the steering knuckle to provide the steering shaft's load-bearing function. To achieve a maintenance-free steering knuckle assembly, related technologies typically incorporate a clearance adjustment mechanism between the kingpin and the steering knuckle to limit the kingpin's vertical displacement and ensure a seal between the kingpin and the steering knuckle, thus achieving a maintenance-free design without the need for repeated grease injections.

[0004] However, due to the complex structure of the gap adjustment mechanism and high processing precision requirements, the production cost of the maintenance-free steering knuckle assembly is high, which is not conducive to mass production. Utility Model Content

[0005] The present application provides a maintenance-free steering knuckle assembly and a vehicle to solve the problem that the production cost of the maintenance-free steering knuckle assembly is high and is not conducive to mass production.

[0006] In one aspect, the present application provides a maintenance-free steering knuckle assembly, comprising:

[0007] a steering knuckle, the steering knuckle comprising a mounting slot, a first pin hole, and a second pin hole, the mounting slot being located between the first pin hole and the second pin hole;

[0008] a kingpin having a first mounting section, a second mounting section, and a third mounting section connected in sequence, wherein a diameter of the second mounting section gradually decreases from the first mounting section to the third mounting section;

[0009] a front axle, one end of the front axle being located in the mounting groove, the kingpin being inserted into the steering knuckle through the first pin hole, the front axle, and the second pin hole in sequence, the first mounting section being located in the first pin hole, the second mounting section being correspondingly engaged with the front axle, and the third mounting section being partially located in the second pin hole;

[0010] The bearing assembly includes a first bearing and a second bearing, wherein the first bearing is sleeved on the first mounting section and located in the first pin hole, and the second bearing is sleeved on the third mounting section and partially located in the second pin hole.

[0011] In a possible implementation, the maintenance-free steering knuckle assembly provided in the present application further includes a seal, which is sleeved on the first mounting section and located in the first pin hole.

[0012] In a possible implementation, the maintenance-free steering knuckle assembly provided in the present application further includes a first cover plate, which is connected to the steering knuckle and covers an end of the first mounting section facing away from the seal.

[0013] In a possible implementation, the maintenance-free steering knuckle assembly provided in the present application further includes an adjustment member, which is sleeved on the kingpin and located in the second pin hole.

[0014] In a possible implementation, the maintenance-free steering knuckle assembly provided in the present application further includes a limiting member, which is sleeved on one end of the kingpin and abuts against the adjusting member.

[0015] In a possible implementation, the maintenance-free steering knuckle assembly provided in the present application further includes a second cover plate, which is connected to the steering knuckle and covers an end of the third mounting section facing away from the first mounting section.

[0016] In a possible implementation, in the maintenance-free steering knuckle assembly provided by the present application, the first bearing is a needle roller bearing, and the second bearing is a combined bearing.

[0017] In a possible implementation, in the maintenance-free steering knuckle assembly provided by the present application, the diameter of the first mounting section is greater than the diameter of the third mounting section.

[0018] In one possible implementation, in the maintenance-free steering knuckle assembly provided by the present application, the diameter of the first mounting segment is greater than or equal to the maximum diameter of the second mounting segment, and the diameter of the third mounting segment is less than or equal to the minimum diameter of the second mounting segment.

[0019] On the other hand, the present application provides a vehicle comprising a vehicle body and the maintenance-free steering knuckle assembly described in any one of the first aspects, wherein the maintenance-free steering knuckle assembly is arranged on the vehicle body.

[0020] The maintenance-free steering knuckle assembly and vehicle provided by the present application, the maintenance-free steering knuckle assembly includes a steering knuckle, the steering knuckle has a mounting groove, a first pin hole and a second pin hole; a kingpin has a first mounting section, a second mounting section and a third mounting section, the diameter of the second mounting section gradually decreases from the first mounting section to the third mounting section; a front axle, one end of which is located in the mounting groove, the kingpin is inserted into the steering knuckle through the first pin hole, the front axle and the second pin hole in sequence, the first mounting section is located in the first pin hole, the second mounting section corresponds to the front axle, and the third mounting section is partially located in the second pin hole; a bearing assembly includes a first bearing and a second bearing, the first bearing is sleeved on the first mounting section and located in the first pin hole, the second bearing is sleeved on the third mounting section and partially located in the second pin hole, thereby directly limiting the displacement of the kingpin by the second mounting section with a changed diameter, thereby reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0022] Figure 1 A schematic structural diagram of a maintenance-free steering knuckle assembly provided in an embodiment of the present application;

[0023] Figure 2 A schematic diagram of the partial structure of the maintenance-free steering knuckle assembly provided in an embodiment of the present application.

[0024] Description of reference numerals:

[0025] 100-steering knuckle; 110-mounting slot; 120-first pin hole; 130-second pin hole;

[0026] 200-kingpin; 210-first mounting section; 220-second mounting section; 230-third mounting section;

[0027] 300-front axle;

[0028] 400-bearing assembly; 410-first bearing; 420-second bearing;

[0029] 500-seals;

[0030] 600-first cover plate;

[0031] 700-second cover plate;

[0032] 800-Adjustment parts;

[0033] 900-Limiting parts.

[0034] The above drawings illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and the textual description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0035] To make the objectives, technical solutions, and advantages of this application more clear, the technical solutions in this application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0036] In the embodiments of the present application, the terms "upper", "lower", "inside", "middle", "outside", "front", "back", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. These terms are primarily intended to better describe the present application and its embodiments, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to being constructed and operated in a specific orientation. Moreover, in addition to being used to indicate orientations or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present application can be understood based on the specific circumstances.

[0037] Furthermore, the terms "disposed," "connected," and "fixed" should be interpreted broadly. For example, "connected" can mean a fixed connection, a removable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediary, or an internal connection between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in the embodiments of this disclosure based on the specific circumstances.

[0038] The terms "first," "second," "third," "fourth," and so on (if any) in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a particular order or sequential sequence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the application described herein, for example, can be implemented in an order other than those illustrated or described herein.

[0039] In the embodiments of this application, words such as "exemplarily" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described in this application as "exemplary" or "for example" should not be construed as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplarily" or "for example" is intended to present the relevant concepts in a concrete manner.

[0040] Unless otherwise stated, the term "plurality" means two or more.

[0041] As described in the background, the steering knuckle is the core component of a vehicle's steering axle and a crucial element for steering. During vehicle operation, the knuckle not only bears the vehicle's vertical load—the weight of the vehicle itself, passengers, and cargo—but also withstands the axial loads generated by steering. Therefore, the knuckle must possess sufficient strength and rigidity to prevent deformation or fracture under complex operating conditions.

[0042] Steering knuckle assemblies are typically maintained by regularly injecting grease into the mating area between the kingpin and the steering knuckle. Bearings are used between the front axle and the steering knuckle to provide the steering shaft's load-bearing function. To achieve a maintenance-free steering knuckle assembly, related technologies typically incorporate a clearance adjustment mechanism between the kingpin and the steering knuckle to limit the kingpin's vertical displacement and ensure a seal between the kingpin and the steering knuckle, thus achieving a maintenance-free design without the need for repeated grease injections.

[0043] However, due to the complex structure of the gap adjustment mechanism and high processing precision requirements, the production cost of the maintenance-free steering knuckle assembly is high, which is not conducive to mass production.

[0044] To solve the above problems, the present application provides a maintenance-free steering knuckle assembly and a vehicle, the maintenance-free steering knuckle assembly including a steering knuckle, the steering knuckle having a mounting groove, a first pin hole and a second pin hole; a kingpin having a first mounting section, a second mounting section and a third mounting section, the diameter of the second mounting section gradually decreasing from the first mounting section to the third mounting section; a front axle, one end of which is located in the mounting groove, the kingpin is inserted into the steering knuckle through the first pin hole, the front axle and the second pin hole in sequence, the first mounting section is located in the first pin hole, the second mounting section corresponds to the front axle, and the third mounting section is partially located in the second pin hole; a bearing assembly including a first bearing and a second bearing, the first bearing is sleeved on the first mounting section and located in the first pin hole, the second bearing is sleeved on the third mounting section and partially located in the second pin hole, thereby directly limiting the displacement of the kingpin by the second mounting section with changed diameter, thereby reducing production costs.

[0045] The following describes in detail the technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems using specific embodiments. The following specific embodiments may be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0046] Please refer to Figure 1 and Figure 2 In a first aspect, the present embodiment provides a maintenance-free steering knuckle assembly, comprising a steering knuckle 100, the steering knuckle 100 having a mounting groove 110, a first pin hole 120, and a second pin hole 130, wherein the mounting groove 110 is located between the first pin hole 120 and the second pin hole 130; a king pin 200, the king pin 200 having a first mounting section 210, a second mounting section 220, and a third mounting section 230 connected in sequence, wherein the diameter of the second mounting section 220 gradually decreases from the first mounting section 210 to the third mounting section 230; a front axle 300, one end of the front axle 300 being located in the mounting groove 110 Inside, the kingpin 200 is inserted into the steering knuckle 100 through the first pin hole 120, the front axle 300 and the second pin hole 130 in sequence, the first mounting section 210 is located in the first pin hole 120, the second mounting section 220 corresponds to the front axle 300, and the third mounting section 230 is partially located in the second pin hole 130; the bearing assembly 400 includes a first bearing 410 and a second bearing 420, the first bearing 410 is sleeved on the first mounting section 210 and is located in the first pin hole 120, the second bearing 420 is sleeved on the third mounting section 230 and is partially located in the second pin hole 130.

[0047] Specifically, lubricant is contained within the bearing assembly 400, which reduces friction and wear, thereby extending the service life of the steering knuckle 100 assembly. When the vehicle travels on bumpy roads, the wheels rise and fall with the road's undulations, causing the steering knuckle 100 and kingpin 200 to move relative to the front axle 300 along the kingpin 200 axis. For example, if a wheel falls into a pothole while the vehicle body remains on the road, the wheel drives the knuckle 100 and kingpin 200 downward relative to the front axle 300, squeezing the bearing assembly 400 and causing it to loosen. This in turn causes lubricant to leak, rendering the maintenance-free function impossible.

[0048] Specifically, in this embodiment, the steering knuckle 100 has a mounting groove 110, a first pin hole 120 and a second pin hole 130, the mounting groove 110 is located between the first pin hole 120 and the second pin hole 130, one end of the front axle 300 is located in the mounting groove 110, and the kingpin 200 is inserted into the steering knuckle 100 through the first pin hole 120, the front axle 300 and the second pin hole 130 in sequence, and the steering knuckle 100 can rotate around the axial direction of the kingpin 200, thereby realizing the change of direction of the vehicle.

[0049] The kingpin 200 has a first mounting segment 210, a second mounting segment 220 and a third mounting segment 230. The diameter of the second mounting segment 220 gradually decreases along the direction from the first mounting segment 210 to the third mounting segment 230. The first mounting segment 210 is located in the first pin hole 120, the second mounting segment 220 corresponds to the front axle 300, and the third mounting segment 230 is partially located in the second pin hole 130. Therefore, the axial displacement of the kingpin 200 relative to the front axle 300 is limited by the second mounting segment 220 with a gradually decreasing diameter.

[0050] It should be noted that a through hole is provided on the front axle 300, and the second mounting section 220 is arranged in the through hole, and the size and shape of the through hole are matched with the second mounting section 220. When the kingpin 200 tends to move downward relative to the front axle 300, the diameter of the second mounting section 220 gradually decreases. Therefore, the kingpin 200 will be restricted by the structure of the through hole when moving, providing resistance to the movement of the kingpin 200, thereby limiting the movement of the kingpin 200, and further realizing the maintenance-free function of the steering knuckle 100 assembly.

[0051] At the same time, in order to further ensure the stability of the kingpin 200 , the kingpin 200 and the front axle 300 may be interference fit during installation to ensure a tight connection between the kingpin 200 and the front axle 300 .

[0052] Specifically, the maintenance-free steering knuckle assembly provided in this embodiment includes a bearing assembly 400, and the bearing assembly 400 includes a first bearing 410 and a second bearing 420. The first bearing 410 is sleeved on the first mounting section 210 and is located in the first pin hole 120. The second bearing 420 is sleeved on the third mounting section 230 and is partially located in the second pin hole 130, thereby improving the rotation flexibility of the steering knuckle 100 and reducing friction loss.

[0053] The maintenance-free steering knuckle assembly provided in this embodiment is configured to have a second mounting section 220 with a gradually decreasing diameter, so that the kingpin 200 is restricted by the structure of the through hole when moving, providing resistance to the movement of the kingpin 200, thereby limiting the movement of the kingpin 200. Therefore, there is no need to configure a gap adjustment mechanism, thereby reducing production difficulty and production costs.

[0054] In an optional embodiment, the maintenance-free steering knuckle assembly further includes a seal 500 , which is sleeved on the first mounting section 210 and located in the first pin hole 120 .

[0055] Specifically, in this embodiment, the seal 500 is set so that the seal 500 and the first pin hole 120 form a closed area. The first bearing 410 is located in this area, and lubricant is filled in this area, so that the friction resistance of the first bearing 410 during rotation can be reduced and the flexibility of rotation can be increased. Sealing by the seal 500 can prevent contaminants from entering the sealed area, and can also prevent lubricant leakage, thereby ensuring the durability of the lubrication effect, thereby eliminating the need for repeated addition of lubricant and achieving a maintenance-free function.

[0056] In an optional embodiment, the maintenance-free steering knuckle assembly further includes a first cover plate 600 , which is connected to the steering knuckle 100 and covers an end of the first mounting section 210 facing away from the sealing element 500 .

[0057] Specifically, in this embodiment, the maintenance-free steering knuckle assembly also includes a first cover plate 600, which is connected to the steering knuckle 100 and covers the end of the first mounting section 210 away from the seal 500, that is, covers the first pin hole 120, thereby ensuring the sealing effect of the sealing area.

[0058] It should be noted that in this embodiment, the first cover plate 600 is connected to the steering knuckle 100 by welding to ensure stability and sealing. In other embodiments, adaptive selection can be made as needed, and this embodiment does not impose any restrictions. For example, the first cover plate 600 is fixed to the steering knuckle 100 by bolts.

[0059] In addition, in order to further ensure the sealing performance of the connection between the first cover plate 600 and the steering knuckle 100 , a gasket may be provided between the first cover plate 600 and the steering knuckle 100 to enhance the sealing performance.

[0060] In an optional embodiment, the maintenance-free steering knuckle assembly further includes an adjusting member 800 , which is sleeved on the kingpin 200 and located in the second pin hole 130 .

[0061] Specifically, in this embodiment, the maintenance-free steering knuckle assembly further includes an adjusting member 800, which is sleeved on the kingpin 200 and located within the second pin hole 130. The end of the second bearing 420 facing away from the first bearing 410 abuts against the adjusting member 800. When the vehicle travels over a bumpy road, the steering knuckle 100 and kingpin 200, driven by the wheels, move upward relative to the front axle 300, causing the front axle 300 to press downward against the second bearing 420. Therefore, the adjusting member 800 in this embodiment is configured to absorb the downward force exerted by the front axle 300. Furthermore, the adjusting member 800 itself has a certain degree of elasticity, and by elastically deforming, it absorbs the displacement of the second bearing 420, thereby preventing the second bearing 420 from shaking and preventing lubricant leakage.

[0062] Meanwhile, it should be noted that this embodiment does not impose any restrictions on the specific material and quantity of the adjustment member 800 , and can be adaptively selected as needed.

[0063] In an optional embodiment, the maintenance-free steering knuckle assembly further includes a limiting member 900 , which is sleeved on one end of the kingpin 200 and abuts against the adjusting member 800 .

[0064] Specifically, in this embodiment, the maintenance-free steering knuckle assembly also includes a limit member 900, which is sleeved on one end of the kingpin 200 and abuts against the adjustment member 800, thereby limiting the position and elastic deformation of the adjustment member 800, avoiding excessive displacement of the kingpin 200 and affecting the entire steering system.

[0065] Specifically, in this embodiment, the stopper 900 is screwed onto one end of the kingpin 200 via a threaded connection, and the operator can control the number of rotations of the stopper 900 to limit the position of the adjustment member 800. Furthermore, the threaded connection facilitates the removal of the stopper 900, thereby facilitating replacement of the adjustment member 800 or increasing or decreasing the number of adjustment members 800.

[0066] Meanwhile, in other embodiments, the limiting member 900 may also be connected to the kingpin 200 using other connection methods, which are not limited in this embodiment. For example, the limiting member 900 is welded to the kingpin 200 to prevent the limiting member 900 from being displaced by force and thus failing to achieve the limiting effect.

[0067] In an optional embodiment, the maintenance-free steering knuckle assembly further includes a second cover plate 700 , which is connected to the steering knuckle 100 and covers an end of the third mounting section 230 facing away from the first mounting section 210 .

[0068] Specifically, in this embodiment, the maintenance-free steering knuckle assembly also includes a second cover plate 700, which is connected to the steering knuckle 100 and covers the end of the third mounting section 230 away from the first mounting section 210, thereby closing the second pin hole 130, thereby closing the second pin hole 130 and preventing the lubricant added therein from leaking, thereby achieving a maintenance-free function.

[0069] It should be noted that in this embodiment, the second cover plate 700 is connected to the steering knuckle 100 by welding to ensure stability and sealing. In other embodiments, adaptive selection can be made as needed, and this embodiment does not impose any limitations. For example, the second cover plate 700 is fixed to the steering knuckle 100 by bolts.

[0070] In addition, in order to further ensure the sealing performance of the connection between the second cover plate 700 and the steering knuckle 100 , a gasket may be provided between the second cover plate 700 and the steering knuckle 100 to enhance the sealing performance.

[0071] In an optional embodiment, the first bearing 410 is a needle roller bearing, and the second bearing 420 is a combined bearing.

[0072] Specifically, in this embodiment, the variable diameter design of the second mounting section 220 limits the downward displacement of the kingpin 200 relative to the front axle 300. Consequently, the first bearing 410 is not squeezed by the front axle 300, allowing the use of a lower-cost needle roller bearing, ensuring excellent sealing. Furthermore, because the second bearing 420 is subject to downward displacement relative to the axis of the kingpin 200 due to squeezing by the front axle 300, a combined bearing with improved sealing properties is selected for this purpose, ensuring a maintenance-free steering knuckle 100 assembly.

[0073] Meanwhile, it should be noted that needle roller bearings and combination bearings are common bearings in the prior art, and therefore, they will not be further explained here. The type of suitable combination bearing can be selected according to actual needs, and this embodiment does not impose any restrictions on this.

[0074] In an optional embodiment, the diameter of the first mounting segment 210 is greater than the diameter of the third mounting segment 230 .

[0075] Specifically, in this embodiment, the diameter of the first mounting section 210 is larger than the diameter of the third mounting section 230. Correspondingly, the aperture of the first pin hole 120 is larger than the aperture of the second pin hole 130, thereby facilitating the production and processing of the main pin 200 and reducing production difficulty.

[0076] In an optional embodiment, the diameter of the first mounting segment 210 is greater than or equal to the maximum diameter of the second mounting segment 220 , and the diameter of the third mounting segment 230 is less than or equal to the minimum diameter of the second mounting segment 220 .

[0077] Specifically, in this embodiment, the diameter of the first mounting segment 210 can be greater than or equal to the maximum diameter of the second mounting segment 220, and the diameter of the third mounting segment 230 can be less than or equal to the minimum diameter of the second mounting segment 220. Preferably, the diameter of the first mounting segment 210 is equal to the maximum diameter of the second mounting segment 220, and the diameter of the third mounting segment 230 is equal to the minimum diameter of the second mounting segment 220, thereby achieving a smooth transition from the first mounting segment 210 to the third mounting segment 230, avoiding the appearance of a step-like structure on the kingpin 200 that causes increased friction and affects the rotation of the steering knuckle 100.

[0078] On the other hand, this embodiment further provides a vehicle, comprising a vehicle body and the maintenance-free steering knuckle assembly described in any one of the first aspects, wherein the maintenance-free steering knuckle assembly is arranged on the vehicle body.

[0079] The specific structure of the maintenance-free steering knuckle assembly has been described in the above embodiments and will not be repeated here.

[0080] The vehicle provided in this embodiment includes a vehicle body and a maintenance-free steering knuckle assembly. The maintenance-free steering knuckle assembly is arranged on the vehicle body. The maintenance-free steering knuckle assembly includes a steering knuckle 100, which has a mounting groove 110, a first pin hole 120 and a second pin hole 130; a kingpin 200, which has a first mounting section 210, a second mounting section 220 and a third mounting section 230, and the diameter of the second mounting section 220 gradually decreases from the first mounting section 210 to the third mounting section 230; a front axle 300, one end of which is located in the mounting groove 110, and the kingpin 200 is inserted through the first pin hole 120, the front axle 300 and the second pin hole 130 in sequence. It is arranged on the steering knuckle 100, the first mounting section 210 is located in the first pin hole 120, the second mounting section 220 corresponds to the front axle 300, and the third mounting section 230 is partially located in the second pin hole 130; the bearing assembly 400 includes a first bearing 410 and a second bearing 420, the first bearing 410 is sleeved on the first mounting section 210 and located in the first pin hole 120, the second bearing 420 is sleeved on the third mounting section 230 and partially located in the second pin hole 130, thereby directly limiting the displacement of the kingpin 200 through the second mounting section 220 with a changed diameter, without the need for an additional gap adjustment mechanism, thereby reducing production costs.

[0081] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the utility model disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, and the true scope and spirit of the present application are indicated by the following claims.

[0082] It should be understood that the present application is not limited to the exact structure described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A maintenance-free steering knuckle assembly, characterized in that: include: A steering knuckle, the steering knuckle having a mounting slot, a first pin hole and a second pin hole, the mounting slot being located between the first pin hole and the second pin hole; A kingpin, the kingpin having a first mounting section, a second mounting section and a third mounting section which are connected in sequence, wherein a diameter of the second mounting section gradually decreases along a direction from the first mounting section to the third mounting section; A front axle, one end of the front axle is located in the mounting groove, the kingpin is inserted into the steering knuckle through the first pin hole, the front axle and the second pin hole in sequence, the first mounting section is located in the first pin hole, the second mounting section is matched with the front axle, and the third mounting section is partially located in the second pin hole; The bearing assembly comprises a first bearing and a second bearing, wherein the first bearing is sleeved on the first mounting section and located in the first pin hole, and the second bearing is sleeved on the third mounting section and partially located in the second pin hole.

2. The maintenance-free steering knuckle assembly according to claim 1, characterized in that: It also includes a sealing member, which is sleeved on the first mounting section and located in the first pin hole.

3. The maintenance-free steering knuckle assembly according to claim 2, characterized in that: It also includes a first cover plate, which is connected to the steering knuckle and covers an end of the first installation section away from the sealing component.

4. The maintenance-free steering knuckle assembly according to any one of claims 1 to 3, characterized in that: It also includes an adjusting piece, which is sleeved on the main pin and located in the second pin hole.

5. The maintenance-free steering knuckle assembly according to claim 4, characterized in that: It also includes a limiting member, which is sleeved on one end of the kingpin and abuts against the adjusting member.

6. The maintenance-free steering knuckle assembly according to any one of claims 1 to 3, characterized in that: It also includes a second cover plate, which is connected to the steering knuckle and covers an end of the third mounting section away from the first mounting section.

7. The maintenance-free steering knuckle assembly according to any one of claims 1 to 3, characterized in that: The first bearing is a needle roller bearing, and the second bearing is a combined bearing.

8. The maintenance-free steering knuckle assembly according to any one of claims 1 to 3, characterized in that: The diameter of the first mounting section is greater than the diameter of the third mounting section.

9. The maintenance-free steering knuckle assembly according to any one of claims 1 to 3, characterized in that: The diameter of the first mounting segment is greater than or equal to the maximum diameter of the second mounting segment, and the diameter of the third mounting segment is less than or equal to the minimum diameter of the second mounting segment.

10. A vehicle, characterized in that: It comprises a vehicle body and the maintenance-free steering knuckle assembly according to any one of claims 1 to 9, wherein the maintenance-free steering knuckle assembly is arranged on the vehicle body.

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