Kingpin assembly and vehicle

Abstract

The utility model discloses a kingpin assembly and a vehicle, wherein the kingpin assembly comprises: a kingpin; a steering knuckle, comprising an upper ear and a lower ear, wherein the upper ear and the lower ear are both formed with coaxial pin holes, and the kingpin and the pin hole are clearance-matched to form a side channel; a front axle, wherein the fist of the front axle is connected between the upper ear and the lower ear through the kingpin; a sealing end cover, wherein the sealing end cover is respectively arranged at the end of the upper ear and / or the lower ear, and the sealing end cover is provided with a first opening and a second opening spaced apart; a sliding member, wherein the sliding member is arranged between the sealing end cover and the end of the kingpin, the sliding member is sealingly matched with the inner side wall of the sealing end cover, and an oil storage chamber is defined between the sliding member and the end of the kingpin, and the sliding member is provided with an oil nozzle; the sliding member is configured to apply force to the sliding member through the first opening to make the sliding member move toward the kingpin, and to inject grease into the oil nozzle through the second opening to make the sliding member move toward the sealing end cover.

Description

Technical Field

[0001] The utility model relates to the technical field of axles, in particular to a kingpin assembly and a vehicle. Background Art

[0002] The bridge assembly is the main load-bearing and steering component of the front axle in the chassis assembly, and its service life affects the service life of the entire vehicle.

[0003] In the related technology, the bridge assembly on the market generally adopts a knuckle hole bushing structure, and the knuckle and the front axle are locked with a locking pin. Due to the frequent steering of the vehicle, sliding friction occurs between the kingpin and the bushing connecting the front axle and the knuckle, causing the kingpin and bushing to wear. In order to avoid tire wear, steering shimmy and other faults of the vehicle; after a certain mileage, the bridge assembly generally needs to be disassembled, and the kingpin and knuckle assembly need to be replaced for maintenance. Disassembly is time-consuming, resulting in high cost of use, and is not very user-friendly. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a kingpin assembly that can achieve disassembly-free maintenance.

[0005] According to the first aspect of the utility model, the kingpin assembly includes: a kingpin; a steering knuckle, including an upper ear and a lower ear, each of the upper ear and the lower ear is formed with a coaxial pin hole, and the kingpin and the pin hole are gap-matched to form a side channel; a front axle, the fist of the front axle is connected between the upper ear and the lower ear through the kingpin; a sealing end cover, the sealing end cover is respectively arranged at the end of the upper ear and / or the lower ear, and the sealing end cover is provided with a first opening and a second opening spaced apart; a sliding member, the sliding member is arranged between the sealing end cover and the end of the kingpin, the sliding member is sealingly matched with the inner side wall of the sealing end cover, and an oil storage chamber is defined between the sliding member and the end of the kingpin, and the sliding member is provided with an oil nozzle; the sliding member is configured to apply a force to the sliding member through the first opening to move the sliding member toward the kingpin and inject grease into the oil nozzle through the second opening to move the sliding member toward the sealing end cover.

[0006] The kingpin assembly according to the embodiment of the utility model can achieve disassembly-free maintenance.

[0007] According to some embodiments of the present invention, the oil nozzle extends toward one side of the sealing end cover until the oil nozzle can extend out of the second opening when the sliding member moves to contact the sealing end cover.

[0008] According to some embodiments of the present invention, it further includes: a first sealing member, wherein the first sealing member is sleeved on the sliding member, and the first sealing member is interference fit with the sealing end cover.

[0009] According to some embodiments of the utility model, the king pin is provided with a central channel and an intermediate channel at the end portion cooperating with the upper ear and / or the lower ear, one end of the central channel is connected to the oil storage chamber and the other end is connected to the intermediate channel, and both ends of the intermediate channel are connected to the side channels.

[0010] According to some embodiments of the utility model, it also includes: a combined bearing, which includes an outer ring and a plane bearing portion and a needle bearing portion arranged in the outer ring, the needle bearing portion is pressed between the steering knuckle and the kingpin, and the plane bearing portion is sleeved on the kingpin and pressed between the front axle and the lower ear.

[0011] According to some embodiments of the utility model, the outer ring includes: a first outer ring portion and a second outer ring portion, the first outer ring portion is provided with the plane bearing portion, the second outer ring portion is provided with a needle bearing portion, the outer diameter of the first outer ring portion is larger than the outer diameter of the second outer ring portion and a step is formed at the connection; and also includes: a second seal, the second seal is sleeved on the step and cooperates with the lower ear seal.

[0012] According to some embodiments of the utility model, it also includes: a third sealing member, the third sealing member is sleeved on the plane bearing portion, and the third sealing member is sealed and matched with the outer ring.

[0013] According to some embodiments of the present invention, the fourth seal is further included. The fourth seal is arranged on the inner side of the plane bearing portion, and the fourth seal is in sealing cooperation with the king pin.

[0014] According to some embodiments of the utility model, it further includes: a needle bearing, wherein the needle bearing is sleeved on the king pin and pressed between the steering knuckle and the upper ear.

[0015] According to some embodiments of the utility model, it further includes: a pre-tightening member, the first opening is a threaded hole, and the pre-tightening member can selectively cooperate with the first opening thread to generate a pre-tightening force acting on the sliding member to move toward the kingpin.

[0016] A vehicle according to an embodiment of the second aspect of the utility model includes the kingpin assembly.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 is a structural schematic diagram of a kingpin assembly according to an embodiment of the utility model;

[0020] Figure 2 yes Figure 1 The enlarged schematic diagram of point A in the middle;

[0021] Figure 3 yes Figure 1 The enlarged schematic diagram of point B in the middle;

[0022] Figure 4 is a schematic diagram of the cooperation between the sealing end cover and the sliding member according to an embodiment of the utility model;

[0023] Figure 5 The state diagram of the sliding member under the action of external force according to the embodiment of the utility model is shown in FIG. Figure 1 ;

[0024] Figure 6 The state diagram of the sliding member under the action of external force according to the embodiment of the utility model is shown in FIG. Figure 2 ;

[0025] Figure 7 The schematic diagram of the state in which the sliding part according to the embodiment of the utility model is injected with grease through the grease nozzle Figure 1 ;

[0026] Figure 8 The schematic diagram of the state in which the sliding part according to the embodiment of the utility model is injected with grease through the grease nozzle Figure 2 ;

[0027] Fig. 9 It is a structural schematic diagram of a combined bearing according to an embodiment of the utility model.

[0028] Reference numerals:

[0029] 1. Preload member; 2. Sealing end cover; 21. First opening; 22. Second opening; 3. Connector; 4. Steering knuckle; 41. Upper ear; 42. Lower ear; 43. Side channel; 5. Needle roller bearing; 6. Oil seal; 7. Adjustment gasket; 8. Front axle; 9. Kingpin; 10. Combined bearing; 101. Outer ring; 102. Plane bearing part; 103. Needle roller bearing part; 104. First outer ring part; 105. Second outer ring part; 106. Moving ring; 107. Damping ring; 108. Stationary ring; 109. Spacer; 11. Sliding member; 12. Oil storage chamber; 13. Oil nozzle; 14. First seal; 15. Central channel; 16. Intermediate channel; 17. Second seal; 18. Third seal; 19. Fourth seal; 20. Fifth seal. DETAILED DESCRIPTION

[0030] The embodiments of the present utility model are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present utility model are described in detail below.

[0031] Reference below Figure 1-Figure 9 A kingpin assembly according to an embodiment of the present invention is described.

[0032] like Figure 1-Figure 3 As shown, the kingpin 9 assembly includes: a kingpin 9, a steering knuckle 4, a front axle 8, a sealing end cover 2 and a sliding member 11.

[0033] The steering knuckle 4 includes an upper ear 41 and a lower ear 42, both of which are formed with coaxial pin holes, and the main pin 9 is clearance-matched with the pin hole to form a side channel 43. In this way, the upper ear 41 and the lower ear 42 are integrally formed with the steering knuckle 4, and the main pin 9 is inserted into the pin hole to pivotally connect the steering knuckle 4 to the front axle 8. In addition, the main pin 9 is clearance-matched with the pin hole, so that a side channel 43 is formed between the main pin 9 and the pin hole.

[0034] The fist of the front axle 8 is connected between the upper ear 41 and the lower ear 42 through the kingpin 9. In this way, the fist of the front axle 8 is provided with a through hole for the kingpin 9 to pass through, and the kingpin 9 passes through the through hole and the pin hole at the same time so that the kingpin 9 and the fist of the front axle 8 form a match.

[0035] The sealing end cap 2 is respectively arranged at the end of the upper ear 41 and / or the lower ear 42, and the sealing end cap 2 is provided with a first opening 21 and a second opening 22 spaced apart from each other. The sealing end cap 2 is fixed to the end of the upper ear 41 and / or the lower ear 42 by a connecting member 3.

[0036] The sliding member 11 is arranged between the sealing end cover 2 and the end of the kingpin 9. The sliding member 11 is sealed with the inner wall of the sealing end cover 2, and an oil storage chamber 12 is defined between the sliding member 11 and the end of the kingpin 9. The sliding member 11 is provided with an oil nozzle 13.

[0037] In this way, the sliding member 11 is arranged between the sealing end cover 2 and the end of the kingpin 9. The sliding member 11 is sealed with the inner wall of the sealing end cover 2 to form a sealed chamber with the space on the side of the sliding member 11 facing the end of the kingpin 9, and an oil storage chamber 12 is defined between the sliding member 11 and the end of the kingpin 9, and grease can be injected into the oil storage chamber 12 through the oil nozzle 13.

[0038] Moreover, the sliding member 11 is configured to apply force to the sliding member 11 through the first opening 21 to move the sliding member 11 toward the main pin 9 , and to inject grease into the grease nozzle 13 through the second opening 22 to move the sliding member 11 toward the sealing end cover 2 .

[0039] Specifically, when the product leaves the factory, the oil storage chamber 12 between the sliding member 11 and the end of the kingpin 9 is filled with grease. Figure 5-Figure 6 As shown, the maintenance personnel can apply force to the sliding member 11 through the first opening 21 to move the sliding member 11 toward the kingpin 9, squeeze the grease in the oil storage chamber 12 to flow along the side channel 43 of the kingpin 9, and force the original grease to overflow from the seal where the kingpin 9 and the front axle 8 cooperate, so as to replace the grease, and the first maintenance is completed. Then, as shown in FIG. Figure 7-Figure 8 As shown, grease is continuously added to the oil storage chamber 12 through the oil nozzle 13, and the sliding member 11 returns to the initial position under the action of the grease, and the grease is pre-stored, which is convenient for the next maintenance.

[0040] In one embodiment disclosed in the utility model, the kingpin assembly further includes: a preload 1, the first opening 21 is a threaded hole, and the preload 1 can be selectively threadedly matched with the first opening 21 to generate a preload force acting on the sliding member 11 to move toward the kingpin 9. In other words, force can be applied to the sliding member 11 by the preload 1 to push the sliding member 11 to move toward the kingpin 9. Specifically, the preload 1 can be a bolt, and the bolt is threadedly matched with the first opening 21, so that the preload force generated by the bolt acts on the sliding member 11 to move the sliding member 11 toward the kingpin 9. In addition, the bolt is removed, and grease is continuously added to the oil storage chamber 12, and the sliding member 11 returns to the initial position under the action of the grease, and the grease pre-storage is completed.

[0041] Therefore, according to the kingpin 9 assembly of the utility model, disassembly-free maintenance can be achieved without replacing parts.

[0042] Furthermore, the oil nozzle 13 extends toward one side of the sealing end cover 2 until the oil nozzle 13 can extend out of the second opening 22 when the sliding member 11 moves to contact the sealing end cover 2 .

[0043] So, like Figure 5-Figure 8As shown, when grease continues to be added to the oil storage chamber 12 so that the sliding member 11 returns to the initial position in contact with the sealing end cover 2 under the action of the grease, the oil nozzle 13 can extend out of the second opening 22, ensuring that the oil nozzle 13 has a sufficient length so that when the sliding member 11 moves toward the kingpin 9 and contacts the end of the kingpin 9, grease can be added to the oil nozzle 13 through the second opening 22, thereby improving operational convenience.

[0044] Furthermore, the main pin 9 assembly also includes: a first sealing member 14 , which is sleeved on the sliding member 11 , and the first sealing member 14 is sealingly fitted between the sealing end cover 2 and the sliding member 11 .

[0045] like Figure 1 , Figure 2 and Figure 4 As shown, the sealing end cover 2 is covered at the end of the upper ear 41 and / or the lower ear 42, so that the outer wall of the sealing end cover 2 is interference fit with the pin hole, and the inner wall of the sealing end cover 2 is interference fit with the sliding member 11. In order to further ensure the sealing of the oil storage chamber 12, a first sealing member 14 is provided between the sliding member 11 and the sealing end cover 2, thereby preventing the external mud and water from entering and the internal grease from being lost.

[0046] Furthermore, the kingpin 9 is provided with a central channel 15 and an intermediate channel 16 at the end that cooperates with the upper ear 41 and / or the lower ear 42, one end of the central channel 15 is connected to the oil storage chamber 12 and the other end is connected to the intermediate channel 16, and both ends of the intermediate channel 16 are connected to the side channels 43.

[0047] See Figure 5 As shown, the grease in the oil storage chamber 12 can flow to the central channel 15 and the side channel 43 at the same time, and the grease in the central channel 15 and the side channel 43 can be interconnected through the intermediate channel 16, thereby fully lubricating the fitting clearance between the kingpin 9 and the steering knuckle 4, improving the lubrication effect, reducing the wear of parts, and extending the service life of the kingpin 9, the steering knuckle 4, and the front axle 8.

[0048] Furthermore, it also includes: a combined bearing 10, which includes an outer ring 101 and a plane bearing portion 102 and a needle bearing portion 103 arranged in the outer ring 101, the needle bearing portion 103 is pressed between the steering knuckle 4 and the kingpin 9, and the plane bearing portion 102 is sleeved on the kingpin 9 and pressed between the front axle 8 and the lower ear 42.

[0049] Combination Figure 1 and Fig. 9As shown, the combined bearing 10 includes a plane bearing portion 102 and a needle bearing portion 103, and the plane bearing portion 102 and the needle bearing portion 103 share an outer ring 101, so that the needle bearing portion 103 is pressed between the steering knuckle 4 and the kingpin 9, and the plane bearing portion 102 is pressed between the front axle 8 and the lower ear 42, which is convenient for installation. In addition, the needle bearing portion 103 has a strong bearing capacity, uniform force, good lubricity, and low wear, which can better protect the surface of the kingpin 9, extend the service life of the kingpin 9, and make the steering more flexible. Under the premise of sufficient lubrication, it can achieve full life cycle free disassembly and maintenance.

[0050] The plane bearing part 102 includes a dynamic ring 106, a damping ring 107 and a static ring 108. The damping characteristics of the damping ring 107 can attenuate the vibration of the axle, ease the impact load from the road surface, and better eliminate the fault phenomena such as swaying, shaking, and floating.

[0051] Further, the outer ring 101 includes: a first outer ring portion 104 and a second outer ring portion 105, the first outer ring portion 104 is provided with a plane bearing portion 102, the second outer ring portion 105 is provided with a needle bearing portion 103, the outer diameter of the first outer ring portion 104 is greater than the outer diameter of the second outer ring portion 105, and a step is formed at the connection. The kingpin 9 assembly also includes: a second seal 17, the second seal 17 is sleeved on the step and is sealed with the lower ear 42.

[0052] Combination Figure 1 , Figure 3 and Fig. 9 As shown, in order to further improve the sealing performance, a second seal 17 is installed at the step where the outer ring 101 and the second outer ring 105 are connected, so that the second seal 17 is sleeved on the step and has an interference fit with the lower ear 42.

[0053] Furthermore, the kingpin 9 assembly also includes: a third seal 18, which is sleeved on the plane bearing portion 102 and seals with the outer ring 101. In this way, the third seal 18 seals the dynamic ring 106 and the kingpin 9, greatly improving the sealing performance of the entire bearing and effectively solving the problems of external mud and water entering and internal grease loss.

[0054] Furthermore, the kingpin 9 assembly further includes: a fourth seal 19, which is annularly arranged on the inner side of the plane bearing portion 102, and the fourth seal 19 is sealed with the kingpin 9. In this way, the fourth seal 19 and the plane bearing portion 102 form a seal to prevent mud and water from entering the grease area and the grease from flowing out.

[0055] Furthermore, the kingpin 9 assembly further includes: a fifth seal 20, which is sleeved on the sealing end cover 2, and the fifth seal 20 is sealed with the kingpin 9. In this way, the fifth seal 20 and the sealing end cover 2 form a seal to prevent mud and water from entering the grease area and the grease from flowing out.

[0056] Furthermore, the kingpin 9 assembly also includes: a needle bearing 5, which is sleeved on the kingpin 9 and pressed between the steering knuckle 4 and the upper ear 41. In this way, the needle bearing 5 is arranged between the upper ear 41 of the steering knuckle 4 and the kingpin 9. The needle bearing 5 has a strong bearing capacity, uniform force, good lubricity, and low wear, and can better protect the surface of the kingpin 9. At the same time, the service life of the kingpin 9 is extended, and the steering is more flexible. Moreover, under the premise of sufficient lubrication, it can achieve full life cycle free disassembly and maintenance-free.

[0057] In some embodiments, the first seal 14, the second seal 17, the third seal 18, the fourth seal 19, and the fifth seal 20 may be annular gaskets, but are not limited thereto.

[0058] In addition, the kingpin 9 assembly also includes an oil seal 6 and an adjusting gasket 7. The oil seal 6 is sleeved at the matching position of the kingpin 9 and the front axle 8. The adjusting gasket 7 is sleeved at the lower end of the oil seal 6 and is pressed between the upper ear 41 and the front axle 8, thereby forming a seal.

[0059] The vehicle according to the second embodiment of the utility model includes a kingpin 9 assembly.

[0060] Therefore, according to the kingpin 9 assembly of the utility model, in the upper part of the kingpin 9 assembly, the first seal 14 forms a seal with the seal end cover 2 and the sliding member 11; the fifth seal 20 forms a seal with the seal end cover 2 and the steering knuckle 4; the oil seal 6 forms a seal with the steering knuckle 4 and the kingpin 9, forming a total of three seals. In the lower part of the kingpin 9 assembly, the first seal 14 forms a seal with the seal end cover 2 and the sliding member 11; the fifth seal 20 forms a seal with the seal end cover 2 and the steering knuckle 4; the third seal 18 forms a seal with the combined bearing 10; the second seal 17 forms a seal with the combined bearing 10 and the steering knuckle 4; the fourth seal 19 forms a seal with the combined bearing 10 and the kingpin 9 seal, forming a total of five seals, thereby completely preventing mud and water from entering the grease area and the grease from flowing out, and ensuring a maintenance-free period of 200,000 kilometers for the kingpin 9 assembly. In addition, when the vehicle is approaching the maintenance cycle, force can be applied to the sliding member 11 through the first opening 21, so that the sliding member 11 squeezes the grease in the oil storage chamber 12 to flow along the channel of the kingpin 9, forcing the original grease to overflow from the seal where the kingpin 9 and the front axle 8 cooperate, so as to achieve grease replacement, and the first maintenance is completed at this time. Then, grease is continued to be added to the oil storage chamber 12 through the oil nozzle 13, and the sliding member 11 returns to the initial position under the action of the grease. The grease is pre-stored, which is convenient for the next maintenance, thereby achieving non-disassembly maintenance without the need to replace parts.

[0061] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0062] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0063] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A kingpin assembly, characterized in that: include: Kingpin; A steering knuckle, comprising an upper ear and a lower ear, wherein the upper ear and the lower ear are both formed with a coaxial pin hole, and the main pin is clearance-matched with the pin hole to form a side channel; A front axle, the fist of which is connected between the upper ear and the lower ear via the kingpin; A sealing end cover, which is respectively arranged at the end of the upper ear and / or the lower ear, and is provided with a first opening and a second opening spaced apart from each other; A sliding member, the sliding member is arranged between the sealing end cover and the end of the kingpin, the sliding member is sealed with the inner side wall of the sealing end cover and an oil storage chamber is defined between the sliding member and the end of the kingpin, and the sliding member is provided with an oil nozzle; The sliding member is configured to apply a force to the sliding member through the first opening to move the sliding member toward the king pin and to inject grease into the grease nozzle through the second opening to move the sliding member toward the sealing end cover.

2. The kingpin assembly according to claim 1, characterized in that: The oil nozzle extends toward one side of the sealing end cover until the oil nozzle can extend out of the second opening when the sliding member moves to contact the sealing end cover.

3. The kingpin assembly according to claim 1, characterized in that: Also includes: A first sealing member is sleeved on the sliding member, and the first sealing member is sealingly fitted between the sealing end cover and the sliding member.

4. The kingpin assembly according to claim 1, characterized in that: The king pin is provided with a central channel and an intermediate channel at the end portion cooperating with the upper ear and / or the lower ear, one end of the central channel is connected to the oil storage chamber and the other end is connected to the intermediate channel, and both ends of the intermediate channel are connected to the side channels.

5. The kingpin assembly according to claim 1, characterized in that: Also includes: A combined bearing comprises an outer ring and a plane bearing portion and a needle bearing portion arranged in the outer ring, wherein the needle bearing portion is pressed between the steering knuckle and the kingpin, and the plane bearing portion is sleeved on the kingpin and pressed between the front axle and the lower ear.

6. The kingpin assembly according to claim 5, characterized in that: The outer ring comprises: a first outer ring portion and a second outer ring portion, the first outer ring portion is provided with the plane bearing portion, the second outer ring portion is provided with a needle bearing portion, the outer diameter of the first outer ring portion is greater than the outer diameter of the second outer ring portion, and a step is formed at the connection; It also includes: a second sealing member, which is sleeved on the step and seals with the lower ear.

7. The kingpin assembly according to claim 5, characterized in that: Also includes: A third sealing member is sleeved on the plane bearing portion, and the third sealing member is sealingly matched with the outer ring.

8. The kingpin assembly according to claim 5, characterized in that: Also includes: A fourth sealing member is annularly arranged on the inner side of the planar bearing portion, and the fourth sealing member is in sealing cooperation with the king pin.

9. The kingpin assembly according to claim 1, characterized in that: Also includes: A needle bearing is sleeved on the kingpin and pressed between the steering knuckle and the upper ear.

10. The kingpin assembly according to claim 1, characterized in that: Also includes: The first opening is a threaded hole, and the pre-tightening member can selectively cooperate with the thread of the first opening to generate a pre-tightening force acting on the sliding member to move toward the kingpin.

11. A vehicle, characterized in that: Comprising the kingpin assembly according to any one of claims 1-10.

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