Front axle assembly and vehicle

Abstract

The invention relates to the technical field of automobile axles, and provides a front axle assembly and a vehicle. The front axle assembly comprises a main pin, a front beam, a steering knuckle, a first bearing, a second bearing, a first grease outlet assembly and a second grease outlet assembly. The main pin is fixedly connected with the front beam and hinged to the steering knuckle. The first grease outlet assembly is installed on the first grease outlet channel, and the first grease outlet assembly is used for opening the first grease outlet channel to discharge lubricating grease when the grease injection pressure reaches a preset value and blocking the first grease outlet channel to achieve sealing after grease injection is finished; the second grease outlet assembly is provided with a second grease outlet channel; a stepped hole is formed in the area, located at the second end of the main pin, of the steering knuckle; the stepped end of the second grease outlet assembly is hermetically connected with the stepped hole; the second grease outlet channel is provided with a one-way concentric-square-shaped sealing structure so that one-way grease outlet of the lubricating grease can be achieved. According to the front axle assembly, effective grease injection and sufficient lubrication of the master pin can be achieved, the sealing performance can be ensured, and the service life of the master pin is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of automobile axles, and in particular to a front axle assembly and a vehicle. Background Art

[0002] The kingpin steering structure is an important assembly structure for realizing automobile steering, which is related to the normal driving and safety of the vehicle. The kingpin steering structure has a large load and harsh working conditions, so it requires good lubrication to reduce the wear between the kingpin and the matching bearing and extend the service life.

[0003] At present, grease is discharged between the steering knuckle and the bearing through a one-way sealing ring, and the grease discharge pressure is unstable, which can easily cause poor grease discharge and lead to insufficient lubrication of the kingpin and bearing. In addition, the sealing structure of the traditional steering knuckle and kingpin is relatively simple, which cannot effectively prevent foreign matter from entering the steering knuckle, which can easily cause abnormal wear, rust and failure of the kingpin steering structure, thereby failing to ensure the long-term stable operation of the steering knuckle and kingpin and the handling performance of the entire vehicle. Summary of the invention

[0004] The invention provides a front axle assembly and a vehicle, which are used to solve the problem in the prior art that the front axle assembly is difficult to operate stably due to insufficient lubrication of a steering knuckle and a kingpin and poor sealing effectiveness.

[0005] In order to solve the above-mentioned technical problems, the present invention is achieved as follows: In a first aspect, the present invention provides a front axle assembly, including: a kingpin, a front beam, a steering knuckle, a first bearing, a second bearing, a first grease outlet component, and a second grease outlet component; The kingpin is fixedly connected to the front beam, the kingpin is hinged to the steering knuckle, the first bearing and the second bearing are respectively arranged at two ends of the kingpin, and the steering knuckle is rotatably arranged on the kingpin through the first bearing and the second bearing; The steering knuckle has a first grease outlet channel in an area located at the first end of the kingpin, and the first grease outlet channel is connected to the gap between the first bearing and the kingpin; the first grease outlet component is installed in the first grease outlet channel, and the first grease outlet component is used to open the first grease outlet channel to discharge the grease when the grease injection pressure reaches a preset value, and to block the first grease outlet channel to achieve sealing after the grease injection is completed; The second grease outlet component is arranged at the second end of the kingpin, and the second grease outlet component has a second grease outlet channel, and the second grease outlet channel is connected to the gap between the second bearing and the kingpin; the steering knuckle is located at the second end of the kingpin. The stepped end of the second grease outlet component is sealed and connected to the step hole; the second grease outlet channel has a one-way round-shaped sealing structure to realize one-way grease outlet of the grease.

[0006] According to a front axle assembly provided by the present invention, the first grease outlet component includes a safety valve; The first grease outlet passage has an internal thread, the safety valve has an external thread, and the safety valve is threadedly connected to the first grease outlet passage.

[0007] According to a front axle assembly provided by the present invention, the safety valve comprises a valve body, a valve stem, an elastic member and a gasket; The valve body has a receiving cavity, the valve stem is movably arranged in the receiving cavity, and a washer is installed at one end of the valve stem facing the main pin; The elastic member is arranged in the accommodating cavity and connected to the gasket and the valve body; Driven by the elastic member, one end of the valve stem away from the main pin extends out of the accommodating cavity or blocks the accommodating cavity.

[0008] According to a front axle assembly provided by the present invention, the first grease outlet channel includes a first hole segment and a second hole segment; The first hole section is elongated and connected to the gap between the first bearing and the kingpin and the second hole section respectively; the second hole section is used for installing the safety valve.

[0009] According to a front axle assembly provided by the present invention, the second grease outlet component is a thrust bearing, and the thrust bearing comprises: a seat ring, a shaft ring, a damping ring, a shield, a first seal and a second seal; The shaft ring is fixedly connected to the front beam, the seat ring is fixedly connected to the steering knuckle, and the damping ring is sandwiched between the shaft ring and the seat ring; the shield is arranged on the outside of the shaft ring, the seat ring and the damping ring and has an L-shaped longitudinal section; The first sealing member is sandwiched between the shield and the shaft ring, and the second sealing member is covered on the outside of the first sealing member and abuts against the shield and the shaft ring; A connection between the first sealing member, the second sealing member and the shield forms a zigzag structure.

[0010] According to a front axle assembly provided by the present invention, the first seal comprises a first frame and a first lip; The first frame is clamped between the shaft ring and the second sealing member, the first lip is connected to the first frame, and the first lip is abutted against the inner side of the shield; And / or, the second sealing member includes a second frame and a second lip; The second frame is in a bent shape, and the second frame is covered on the first frame and abuts against the outer sides of the shaft ring and the shield; The second lip is connected to the second frame, and the second lip abuts against the outer side of the shield.

[0011] According to a front axle assembly provided by the present invention, the thrust bearing further comprises: a first sealing ring, a second sealing ring and a third sealing ring; The first sealing ring is clamped between the seat ring and the steering knuckle; the second sealing ring is clamped between the shaft ring and the kingpin; and the third sealing ring is clamped between the seat ring and the shield.

[0012] According to a front axle assembly provided by the present invention, the positions of the seat ring and the shaft ring where the first sealing ring, the second sealing ring and the third sealing ring are mounted are both provided with annular grooves; The first sealing ring, the second sealing ring and the third sealing ring are installed in the annular groove.

[0013] A front axle assembly provided according to the present invention further includes: a sealing component; The steering knuckle has a seat hole in the area located at the first end of the kingpin, and the seat hole is connected to the first grease outlet channel. The sealing assembly is installed in the seat hole to seal the gap between the steering knuckle, the front beam and the first end of the kingpin.

[0014] In a second aspect, the present invention provides a vehicle comprising the front axle assembly as described above.

[0015] The front axle assembly and vehicle provided by the present invention are characterized in that a first grease outlet component is arranged at the first end of the kingpin, and a first grease outlet channel is arranged at the steering knuckle, the opening and closing of the first grease outlet channel is controlled by the first grease outlet component, the first grease outlet channel is opened to discharge the grease when the grease injection pressure reaches a preset value, and the first grease outlet channel is blocked to seal after the grease injection is completed, thereby ensuring the consistency of the grease outlet pressure and the smoothness of the grease discharge, and a second grease outlet component is arranged at the second end of the kingpin, sealing is achieved by the step end of the second grease outlet component and the step hole of the steering knuckle, and a one-way meandering flow channel of the second grease outlet channel in the second grease outlet component is used to achieve a meandering lubrication seal, thereby ensuring that the kingpin can be fully lubricated and external impurities can be effectively blocked.

[0016] As can be seen from the above, the present invention can achieve effective grease injection and sufficient lubrication of the kingpin by providing the first grease outlet component and the second grease outlet component, and can ensure sealing performance, extend the service life of the kingpin, and ensure stable operation of the front axle assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 It is a sectional view of the installation structure of the front axle assembly provided by the present invention.

[0019] Figure 2 It is a half-section view of the safety valve provided by the present invention.

[0020] Figure 3 The present invention is a schematic diagram of the grease discharge route of the first end of the kingpin of the front axle assembly provided by the present invention.

[0021] Figure 4 It is a cross-sectional view of the second grease outlet assembly provided by the present invention.

[0022] Figure 5 The present invention is a schematic diagram of the grease discharge route of the second end of the kingpin of the front axle assembly provided by the present invention.

[0023] Reference numerals: 1. Kingpin; 2. Front beam; 3. Steering knuckle; 4. First bearing; 5. first grease outlet assembly; 51. valve body; 52. valve stem; 53. elastic member; 54. gasket; 6. Second grease outlet assembly; 61. Seat ring; 62. Shaft ring; 63. Damping ring; 64. Shield; 65. First sealing member; 66. Second sealing member; 67. First sealing ring; 68. Second sealing ring; 69. Third sealing ring; 651. First frame; 652. First lip; 661. Second frame; 662. Second lip; 7. Sealing assembly; 8. Second bearing; 100, first fat outlet channel; 1001, first hole section; 1002, second hole section; 200. The second fat outlet channel. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] Combine the following Figures 1 to 5, the front axle assembly and the vehicle provided by the embodiment of the present invention are described in detail through specific embodiments and their application scenarios.

[0026] First, as Figure 1 , Figure 3 and Figure 5 As shown, this embodiment provides a front axle assembly, including: a kingpin 1, a front beam 2, a steering knuckle 3, a first bearing 4, a second bearing 8, a first grease outlet component 5 and a second grease outlet component 6.

[0027] The kingpin 1 is fixedly connected to the front beam 2, the kingpin 1 is hinged to the steering knuckle 3, the first bearing 4 and the second bearing 8 are respectively arranged at both ends of the kingpin 1, and the steering knuckle 3 is rotatably arranged on the kingpin 1 through the first bearing 4 and the second bearing 8.

[0028] The steering knuckle 3 has a first grease outlet channel 100 in the area located at the first end of the kingpin 1, and the first grease outlet channel 100 is connected to the gap between the first bearing 4 and the kingpin 1; the first grease outlet component 5 is installed on the first grease outlet channel 100, and the first grease outlet component 5 is used to open the first grease outlet channel 100 to discharge the grease when the grease injection pressure reaches a preset value, and to block the first grease outlet channel 100 after the grease injection is completed to achieve sealing.

[0029] The second grease outlet component 6 is arranged at the second end of the kingpin 1, and the second grease outlet component 6 has a second grease outlet channel 200, and the second grease outlet channel 200 is connected to the gap between the second bearing 8 and the kingpin 1; the steering knuckle 3 has a step hole in the area located at the second end of the kingpin 1, and the stepped end of the second grease outlet component 6 is sealed and connected to the step hole; the second grease outlet channel 200 has a one-way circular sealing structure to realize one-way grease outlet.

[0030] It is understandable that the first kingpin cover at the connection is installed on the outer side of the first bearing 4 and the first end of the kingpin 1, and the second kingpin cover is installed on the outer side of the second bearing 8 and the second end of the kingpin 1. The operator injects grease into the gap between the kingpin 1 and the first bearing 4 and the second bearing 8 through the first kingpin cover and the second kingpin cover at the connection. When the steering knuckle 3 rotates relative to the kingpin 1 and the front beam 2, the grease can reduce the friction of the steering knuckle 3, reduce wear, and extend the service life of the first bearing 4 and the second bearing 8.

[0031] The first end of the steering knuckle 3 near the kingpin 1 of this embodiment has a first grease outlet channel 100, which is used for the flow of grease at the first end of the kingpin 1, and a first grease outlet component 5 is installed in the first grease outlet channel 100. When the operator injects grease into the first kingpin cover at the connection, the gap between the first bearing 4 and the kingpin 1 is filled with grease, and the excess grease flows into the first grease outlet channel 100 and reaches the first grease outlet component 5. When the grease injection pressure reaches a preset value, the first grease outlet component 5 is opened to discharge the grease, and the operator determines that the first end of the kingpin 1 is filled with grease by the overflowing grease. At this time, the operator stops injecting grease, the pressure of the first grease outlet component 5 drops, and the first grease outlet component 5 blocks the first grease outlet channel 100, and the first grease outlet channel 100 is sealed. Since the opening pressure of the first grease outlet component 5 is equal, the same pressure needs to be reached each time the grease is injected to open the first grease outlet channel 100, thereby ensuring the consistency of the grease injection pressure. Moreover, compared with the traditional one-way sealing ring grease outlet setting structure, the first grease outlet component 5 of this embodiment can achieve one-way opening and reverse sealing, which can avoid grease outlet difficulties caused by excessive sealing and external impurities entering through the first grease outlet channel 100 due to poor sealing, causing damage to the kingpin 1 and the first bearing 4.

[0032] Specifically, the first grease outlet assembly 5 can be a one-way valve, and the grease can be discharged and sealed by rotating the valve plate in one direction. The first grease outlet assembly 5 can also be a piston and a cylinder, and the piston can only move in the grease outlet direction and return by driving force to achieve the grease discharge and sealing.

[0033] The second end of the kingpin 1 of this embodiment is provided with a second grease outlet assembly 6, and the second grease outlet assembly 6 has a second grease outlet channel 200. When the operator injects grease into the kingpin 1 cover, the gap between the second bearing 8 and the kingpin 1 is filled with grease, and the excess grease flows into the second grease outlet channel 200 in the second grease outlet assembly 6. The step end of the second grease outlet assembly 6 can be sealed and connected with the step hole of the steering knuckle 3 to achieve a better sealing effect. When the operator injects grease into the second kingpin cover, the gap between the second bearing 8 and the kingpin 1 is filled with grease, and the excess grease flows into the second grease outlet channel 200 of the second grease outlet assembly 6, and flows out from the second grease outlet channel 200 through the one-way round-shaped structure. At this time, the operator can recognize that the grease injection is successful from the overflowing grease, and the operator stops the grease injection. The grease can fully lubricate the kingpin 1, the second bearing 8 and the second grease outlet assembly 6 through the round-shaped bend flow channel. Since the lubricating grease can only pass through the circular structure in one direction, external dust and impurities are prevented from entering through the second grease outlet channel 200, thereby ensuring the quality of the lubricating grease.

[0034] The front axle assembly provided by the present invention is provided with a first grease outlet component 5 at the first end of the kingpin 1, and a first grease outlet channel 100 is provided at the steering knuckle 3, the opening and closing of the first grease outlet channel 100 is controlled by the first grease outlet component 5, the first grease outlet channel 100 is opened to discharge the grease when the injection pressure reaches a preset value, and the first grease outlet channel 100 is blocked to seal after the injection is completed, thereby ensuring the consistency of the grease outlet pressure and the smooth discharge of the grease, and a second grease outlet component 6 is provided at the second end of the kingpin 1, and sealing is achieved by the step end of the second grease outlet component 6 and the step hole of the steering knuckle 3, and a one-way circular flow channel of the second grease outlet channel 200 in the second grease outlet component 6 is used to achieve a circular lubrication seal, thereby allowing the kingpin 1 to be fully lubricated and effectively blocking external impurities.

[0035] As can be seen from the above, the present invention can achieve effective grease injection and sufficient lubrication of the kingpin 1 by providing the first grease outlet component 5 and the second grease outlet component 6, and can ensure sealing performance, thereby extending the service life of the kingpin 1 and ensuring stable operation of the front axle assembly.

[0036] like Figure 1 and Figure 2 As shown, the first grease outlet assembly 5 of this embodiment includes a safety valve.

[0037] The first grease outlet channel 100 has an internal thread, the safety valve has an external thread, and the safety valve is threadedly connected to the first grease outlet channel 100.

[0038] It is understandable that the safety valve can automatically open when the pressure exceeds the set value to allow the grease to flow out automatically, and automatically close when the pressure decreases to prevent the grease from continuing to flow out. The elastic member 53 in the safety valve can unify the grease outlet pressure, so that the safety valve can be switched between opening and closing, realizing the automatic switching of grease injection and sealing.

[0039] The safety valve of the present embodiment is threadedly connected to the first grease outlet passage 100 , so that the safety valve and the first grease outlet passage 100 can be conveniently installed and removed.

[0040] like Figure 2 As shown, the safety valve of this embodiment includes a valve body 51 , a valve stem 52 , an elastic member 53 and a gasket 54 .

[0041] The valve body 51 has an accommodating cavity, and the valve stem 52 is movably arranged in the accommodating cavity. A gasket 54 is installed at one end of the valve stem 52 facing the kingpin 1.

[0042] The elastic member 53 is disposed in the accommodating cavity and connected to the gasket 54 and the valve body 51 .

[0043] Driven by the elastic member 53 , the end of the valve stem 52 away from the main pin 1 extends out of the accommodating cavity or blocks the accommodating cavity.

[0044] It is understandable that when the grease is injected, when the grease reaches the safety valve through the first grease outlet channel 100, the grease exerts pressure on the gasket 54, and the gasket 54 pushes the elastic member 53 to be compressed, and the valve stem 52 is separated from the valve body 51 under the action of the elastic force, and the grease overflows from the gap between the valve stem 52 and the valve body 51. After the grease injection stops, the elastic member 53 is reset under the action of the elastic force, driving the valve stem 52 to return to its original position, and the first grease outlet channel 100 is blocked.

[0045] Specifically, the elastic member 53 may be a spring, which is sleeved on the valve stem 52 and abuts against the washer 54 .

[0046] like Figure 3 As shown, the first fat outlet channel 100 of this embodiment includes a first hole segment 1001 and a second hole segment 1002 .

[0047] The first hole section 1001 is slender and is communicated with the gap between the first bearing 4 and the kingpin 1 and the second hole section 1002 respectively; the second hole section 1002 is used for installing a safety valve.

[0048] It is understandable that the first hole section 1001 is slender. Before the grease leaves the gap between the kingpin 1 and the first bearing 4 and enters the safety valve, the slender setting of the first hole section 1001 is conducive to grease storage and slowing down the flow rate of grease, so that the grease between the kingpin 1 and the first bearing 4 can be fully lubricated.

[0049] like Figure 4 and Figure 5 As shown, the second grease outlet component 6 of this embodiment is a thrust bearing, and the thrust bearing includes: a seat ring 61, a shaft ring 62, a damping ring 63, a shield 64, a first seal 65 and a second seal 66.

[0050] The shaft ring 62 is fixedly connected to the front beam 2, the seat ring 61 is fixedly connected to the steering knuckle 3, and the damping ring 63 is sandwiched between the shaft ring 62 and the seat ring 61; the shield 64 is arranged on the outside of the shaft ring 62, the seat ring 61 and the damping ring 63 and has an L-shaped longitudinal section.

[0051] The first sealing member 65 is sandwiched between the shield 64 and the shaft ring 62 , and the second sealing member 66 is covered on the outer side of the first sealing member 65 and abuts against the shield 64 and the shaft ring 62 .

[0052] The connection between the first sealing member 65, the second sealing member 66 and the protective cover 64 forms a zigzag structure.

[0053] It is understandable that the seat ring 61 can rotate relative to the shaft ring 62 along with the steering knuckle 3 , and the damping ring 63 is arranged between the seat ring 61 and the shaft ring 62 .

[0054] After passing through the gap between the kingpin 1 and the seat ring 61 , the grease passes through the channel between the shaft ring 62 and the damping ring 63 , and enters the circular channel of the shield 64 and the first seal 65 and the second seal 66 .

[0055] The grease flows through the gap between the shield 64 and the shaft ring 62, passes through the connection between the first seal 65 and the shield 64, and after a right-angle bend, enters the gap between the second seal 66 and the first seal 65 and the shield 64, and then after a right-angle bend, enters the connection between the second seal 66 and the shield 64, passes through the connection between the second seal 66 and the shield 64, and the flow direction changes by 180°, and flows out along the length direction of the shield 64. Since the grease passes through the zigzag structure at the connection between the shield 64, the first seal 65 and the second seal 66, the grease can not only fully lubricate the seat ring 61, the shaft ring 62, the damping ring 63, the shield 64, the first seal 65 and the second seal 66, but also strengthen the lubrication between the first seal 65, the second seal 66 and the shield 64, thereby achieving sufficient lubrication and preventing wear of the first seal 65 and the second seal 66, but also effectively blocking the entry of external impurities through the zigzag path, thereby strengthening the lubrication and sealing effects.

[0056] like Figure 4 and Figure 5 As shown, the first sealing member 65 of this embodiment includes a first frame 651 and a first lip 652 .

[0057] The first frame 651 is sandwiched between the shaft ring 62 and the second sealing member 66 . The first lip 652 is connected to the first frame 651 . The first lip 652 abuts against the inner side of the shield 64 .

[0058] It is understandable that the first lip 652 is made of a flexible material, and the first lip 652 is set against and interference fit with the inner side of the shield 64. When the grease flows through the gap between the shaft ring 62 and the shield 64 and passes through the first lip 652, the pressure of the grease can pass through the flexible first lip 652 and enter the gap between the first seal 65 and the second seal 66. On the contrary, there is not enough injection pressure for external impurities to pass in the reverse direction between the first lip 652 and the inner side of the shield 64, thereby achieving one-way passage at the first lip 652.

[0059] Specifically, the first frame 651 may be a steel frame, and the first lip 652 may be a rubber member.

[0060] like Figure 4 and Figure 5 As shown, the second sealing member 66 of this embodiment includes a second frame 661 and a second lip 662 .

[0061] The second frame 661 is bent, and is covered on the first frame 651 and abuts against the outer sides of the shaft ring 62 and the protective cover 64 .

[0062] The second lip 662 is connected to the second frame 661 , and the second lip 662 abuts against the outer side of the shield 64 .

[0063] It is understandable that the second lip 662 is made of a flexible material, and the second lip 662 is set against and interference fits the outer side of the shield 64. When the grease flows through the second lip 662 through the gap between the second frame 661 and the shield 64, the pressure of the grease can pass through the flexible second lip 662 and flow out of the shield 64. On the contrary, the external impurities do not have enough injection pressure and cannot pass through the second lip 662 and the outer side of the shield 64 in the reverse direction, thus achieving one-way passage at the second lip 662.

[0064] Specifically, the second frame 661 may be a steel frame, and the second lip 662 may be a rubber member.

[0065] In some embodiments, one second skeleton 661 is provided, and a plurality of second lips 662 are provided, and the plurality of second lips 662 are arranged at intervals in the length direction of the second skeleton 661 to achieve a better one-way passage function for the grease.

[0066] like Figure 4 and Figure 5 As shown, the thrust bearing of this embodiment further includes: a first sealing ring 67 , a second sealing ring 68 and a third sealing ring 69 .

[0067] The first sealing ring 67 is sandwiched between the seat ring 61 and the steering knuckle 3 ; the second sealing ring 68 is sandwiched between the shaft ring 62 and the kingpin 1 ; and the third sealing ring 69 is sandwiched between the seat ring 61 and the shield 64 .

[0068] It is understandable that the seat ring 61 of this embodiment has a stepped end, and the stepped end of the seat ring 61 cooperates with the stepped hole of the steering knuckle 3. The first sealing ring 67 and the steering knuckle 3 form a first sealing structure for preventing external impurities from entering the steering knuckle 3 and the kingpin 1. The second sealing ring 68 and the kingpin 1 form a second sealing structure for preventing grease from flowing out of the gap between the kingpin 1 and the shaft ring 62. The third sealing ring 69 and the shield 64 form a third sealing structure for preventing grease from overflowing from the thrust bearing and preventing external impurities from entering the thrust bearing.

[0069] This embodiment provides a first sealing ring 67, a second sealing ring 68 and a third sealing ring 69 to achieve full sealing of the thrust bearing, the kingpin 1 and the steering knuckle 3, thereby preventing the loss of grease, extending the service life of the thrust bearing and effectively blocking external impurities.

[0070] Specifically, the first sealing ring 67 , the second sealing ring 68 and the third sealing ring 69 may all be O-rings.

[0071] like Figure 4 and Figure 5 As shown, the seat ring 61 and the shaft ring 62 of this embodiment are provided with annular grooves at the positions where the first sealing ring 67 , the second sealing ring 68 and the third sealing ring 69 are installed.

[0072] The first sealing ring 67, the second sealing ring 68 and the third sealing ring 69 are installed in the annular groove.

[0073] It is understandable that an annular groove is provided on the seat ring 61 and the shaft ring 62, and the first sealing ring 67, the second sealing ring 68 and the third sealing ring 69 are all installed in the annular groove. The annular groove provides installation space for the first sealing ring 67, the second sealing ring 68 and the third sealing ring 69 and constrains the first sealing ring 67, the second sealing ring 68 and the third sealing ring 69 in the annular groove. The annular groove enables the seat ring 61 to be closely abutted against the steering knuckle 3, the kingpin 1 and the shaft ring 62, and the seat ring 61 and the shield 64, so that the sealing effect of the first sealing ring 67, the second sealing ring 68 and the third sealing ring 69 is better.

[0074] like Figure 1 As shown, the front axle assembly of this embodiment also includes: a sealing component 7.

[0075] The steering knuckle 3 has a seat hole in the area located at the first end of the kingpin 1, and the seat hole is connected to the first grease outlet channel 100. The sealing assembly 7 is installed in the seat hole to seal the gap between the steering knuckle 3, the front beam 2 and the first end of the kingpin 1.

[0076] It is understandable that the sealing assembly 7 of this embodiment is interference fit with the seat hole. The seat hole is connected to the first grease outlet channel 100, and the sealing assembly 7 seals the gaps between the steering knuckle 3 and the front beam 2, the first bearing 4 and the front beam 2, and the kingpin 1, so that the grease at the first end of the kingpin 1 can only flow and overflow from the first grease outlet channel 100, and will not overflow from other parts.

[0077] Specifically, the sealing assembly 7 can be a combined oil seal. The combined oil seal forms a labyrinth-like sealing structure and has a multi-layer sealing function. The multi-layer sealing can effectively improve the sealing performance of the kingpin 1, not only can effectively seal the grease, but also can prevent the entry of external impurities.

[0078] In a second aspect, this embodiment provides a vehicle, comprising the front axle assembly as described above.

[0079] Specifically, since the vehicle includes a front axle assembly, the specific structure of the front axle assembly refers to the above-mentioned embodiment, and the vehicle shown in this embodiment includes all the technical solutions of the above-mentioned embodiment. Therefore, it has at least all the beneficial effects achieved by all the technical solutions of the above-mentioned embodiment, which will not be repeated here one by one.

[0080] Specifically, since the vehicle includes a front axle assembly, the specific structure of the front axle assembly refers to the above-mentioned embodiment, and the vehicle shown in this embodiment includes all the technical solutions of the above-mentioned embodiment. Therefore, it has at least all the beneficial effects achieved by all the technical solutions of the above-mentioned embodiment, which will not be repeated here one by one.

[0081] It is understandable that the vehicle includes a front axle assembly. Through the reasonable setting and sealing of the grease outlet channels at both ends of the kingpin 1, the grease injection process can be clearly displayed, and the front axle assembly can be protected from external impurities, thereby ensuring the long-term stable operation of the vehicle and the handling performance of the entire vehicle.

[0082] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A front axle assembly, characterized in that: include: A kingpin, a front beam, a steering knuckle, a first bearing, a second bearing, a first grease outlet assembly and a second grease outlet assembly; The kingpin is fixedly connected to the front beam, the kingpin is hinged to the steering knuckle, the first bearing and the second bearing are respectively arranged at two ends of the kingpin, and the steering knuckle is rotatably arranged on the kingpin through the first bearing and the second bearing; The steering knuckle has a first grease outlet channel in an area located at the first end of the kingpin, and the first grease outlet channel is connected to the gap between the first bearing and the kingpin; the first grease outlet component is installed in the first grease outlet channel, and the first grease outlet component is used to open the first grease outlet channel to discharge the grease when the grease injection pressure reaches a preset value, and to block the first grease outlet channel to achieve sealing after the grease injection is completed; The second grease outlet component is arranged at the second end of the kingpin, and the second grease outlet component has a second grease outlet channel, and the second grease outlet channel is connected to the gap between the second bearing and the kingpin; the steering knuckle is located at the second end of the kingpin. The stepped end of the second grease outlet component is sealed and connected to the step hole; the second grease outlet channel has a one-way round-shaped sealing structure to realize one-way grease outlet of the grease.

2. The front axle assembly according to claim 1, characterized in that: The first grease outlet component includes a safety valve; The first grease outlet passage has an internal thread, the safety valve has an external thread, and the safety valve is threadedly connected to the first grease outlet passage.

3. The front axle assembly according to claim 2, characterized in that: The safety valve comprises a valve body, a valve stem, an elastic member and a gasket; The valve body has a receiving cavity, the valve stem is movably arranged in the receiving cavity, and a washer is installed at one end of the valve stem facing the main pin; The elastic member is arranged in the accommodating cavity and connected to the gasket and the valve body; Driven by the elastic member, one end of the valve stem away from the main pin extends out of the accommodating cavity or blocks the accommodating cavity.

4. The front axle assembly according to claim 2, characterized in that: The first fat outlet channel includes a first hole segment and a second hole segment; The first hole section is elongated and connected to the gap between the first bearing and the kingpin and the second hole section respectively; the second hole section is used for installing the safety valve.

5. The front axle assembly according to claim 1, characterized in that: The second grease outlet component is a thrust bearing, and the thrust bearing comprises: a seat ring, a shaft ring, a damping ring, a shield, a first sealing member and a second sealing member; The shaft ring is fixedly connected to the front beam, the seat ring is fixedly connected to the steering knuckle, and the damping ring is sandwiched between the shaft ring and the seat ring; the shield is arranged on the outside of the shaft ring, the seat ring and the damping ring and has an L-shaped longitudinal section; The first sealing member is sandwiched between the shield and the shaft ring, and the second sealing member is covered on the outside of the first sealing member and abuts against the shield and the shaft ring; A connection between the first sealing member, the second sealing member and the shield forms a zigzag structure.

6. The front axle assembly according to claim 5, characterized in that: The first sealing member includes a first frame and a first lip; The first frame is clamped between the shaft ring and the second sealing member, the first lip is connected to the first frame, and the first lip is abutted against the inner side of the shield; And / or, the second sealing member includes a second frame and a second lip; The second frame is in a bent shape, and the second frame is covered on the first frame and abuts against the outer sides of the shaft ring and the shield; The second lip is connected to the second frame, and the second lip abuts against the outer side of the shield.

7. The front axle assembly according to claim 5, characterized in that: The thrust bearing further comprises: a first sealing ring, a second sealing ring and a third sealing ring; The first sealing ring is clamped between the seat ring and the steering knuckle; the second sealing ring is clamped between the shaft ring and the kingpin; and the third sealing ring is clamped between the seat ring and the shield.

8. The front axle assembly according to claim 7, characterized in that: The positions where the seat ring and the shaft ring are mounted with the first sealing ring, the second sealing ring and the third sealing ring are all provided with annular grooves; The first sealing ring, the second sealing ring and the third sealing ring are installed in the annular groove.

9. The front axle assembly according to claim 1, characterized in that: Also includes: Sealing components; The steering knuckle has a seat hole in the area located at the first end of the kingpin, and the seat hole is connected to the first grease outlet channel. The sealing assembly is installed in the seat hole to seal the gap between the steering knuckle, the front beam and the first end of the kingpin.

10. A vehicle, characterized in that: Comprising the front axle assembly as claimed in any one of claims 1 to 9.

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