CN117601599A - Driving axle wheel edge assembly and driving axle - Google Patents

Abstract

The invention provides a driving axle wheel rim assembly and a driving axle, which comprise a steering knuckle, a hub and a planet wheel assembly, wherein one end of the steering knuckle is movably connected with an axle housing, an inner gear ring assembly and a locking assembly are sleeved at the end part of the other end of the steering knuckle, and the inner gear ring assembly is fixed with the steering knuckle through the locking assembly; the hub is rotatably sleeved on the steering knuckle and the circumferential outer side of the annular gear assembly, and the planet wheel assembly is fixed on the hub and meshed with the annular gear assembly. The fastening performance between the annular gear assembly and the steering knuckle is effectively improved through the locking assembly, so that the situation that looseness or falling off cannot occur in the running process of a vehicle is ensured; meanwhile, the tightness between the steering knuckle and the hub is enhanced, the service lives of the hub and the steering knuckle are prolonged, and the normal operation of the steering knuckle is ensured.

Description

Driving axle wheel edge assembly and driving axle

Technical Field

The invention relates to the field of vehicles, in particular to a driving axle wheel rim assembly and a driving axle.

Background

The wheel side mechanism of the drive axle is an important component of the drive axle, is positioned at two sides of the drive axle and is connected between the axle housing and the wheels, and the main function of the wheel side mechanism is to effectively transmit the power transmitted by the drive axle to the wheels through axle half shafts so as to drive the vehicle to run and bear and transmit various forces and moments from the wheels. The wheel side mechanism generally comprises a wheel hub, a bearing, a steering knuckle, a wheel side speed reducer and the like; the hub is an important part for connecting the wheel and the drive axle, and the bearing is used for supporting the hub and enabling the hub to smoothly rotate. The wheel edge mechanism is also provided with a wheel edge speed reducer, and the wheel edge speed reducer can further reduce the rotating speed transmitted from the drive axle and increase the torque at the same time so as to meet specific working requirements. The hub reduction gear is usually of a planetary gear type and consists of a ring gear, a planetary gear, a planet carrier, a sun gear and the like. The sun gear is connected with the half shaft through a spline and rotates along with the half shaft. The gear ring is connected with a gear ring support, and the gear ring support is connected with the half shaft through a spline. The planet carrier is connected with the hub through bolts.

In the engineering machinery industry, the working environment of a steering drive axle is poor, and a wheel side locking nut is easy to loosen, so that the service life of a hub bearing is reduced or the function is invalid. And the sealing performance between the hub and the knuckle is poor, dust, dirt and other tiny particles easily enter the rotating connection part of the hub and the knuckle and accumulate on the rotating part, so that the problems of friction increase, abrasion aggravation, sealing failure, bearing damage or even gear tooth striking and the like are caused.

Disclosure of Invention

In order to solve the problems in the prior art, the invention provides a driving axle wheel edge assembly and a driving axle.

The invention provides a driving axle wheel rim assembly, which comprises a steering knuckle, a hub and a planet wheel assembly, wherein one end of the steering knuckle is movably connected with an axle housing, an annular gear assembly and a locking assembly are sleeved at the end part of the other end of the steering knuckle, the annular gear assembly is fixed with the steering knuckle through the locking assembly, and the tightness of the locking assembly is adjustable; the hub is rotatably sleeved on the steering knuckle and the circumferential outer side of the annular gear assembly, and the planet wheel assembly is fixed on the hub and meshed with the annular gear assembly.

Further, the annular gear assembly comprises an annular gear, an annular gear support and a retainer ring; the annular gear is connected with the annular gear support through a spline, the retainer ring is embedded in the annular gear to limit axial movement of the annular gear support, and an annular groove is formed in the outer peripheral surface of the annular gear to prevent stress concentration on the outer peripheral surface of the annular gear.

Further, the locking assembly comprises a locking nut and locking pieces, wherein the locking nut is sleeved at the end part of the steering knuckle, grooves which are uniformly distributed are formed in the outer peripheral surface of the locking nut, the locking pieces are arc-shaped, protrusions which are meshed with the grooves of the locking nut are arranged on the inner ring of the locking pieces, and a plurality of unthreaded holes are formed in the locking pieces and are fixed on the inner ring gear support through bolts.

Further, the inner gear ring support is provided with a plurality of groups of screw holes corresponding to the light holes on the adjusting locking pieces, and the positions of the locking pieces relative to the inner gear ring support can be adjusted by adjusting the corresponding relation between the inner gear ring support and the screw holes on the locking pieces, so that the tightness degree of the locking nuts can be adjusted.

Further, the knuckle is equipped with first sealing unit and second sealing unit with wheel hub junction, first sealing unit is including establishing the annular groove on the terminal surface of knuckle and wheel hub laminating, and the annular protrusion with the annular groove adaptation on the wheel hub terminal surface, the annular protrusion is "out eight" structure, the bottom of annular groove is equipped with the breach of discharging granule debris.

Further, the one end that knuckle and axle housing are connected is the fork arm, and both ends all are equipped with the pinhole of installation kingpin about its fork arm, the kingpin passes the pinhole and rotates with the axle housing through the bearing and be connected, the other end of knuckle is the step shaft, the inside axial of step shaft is equipped with the shaft hole that is used for articulated semi-axis to penetrate, be equipped with oil blanket and copper sheathing in the shaft hole of step shaft, the copper sheathing is established on articulated semi-axis, plays auxiliary support effect to articulated semi-axis, be equipped with annular lubrication groove above the copper sheathing.

Further, the drive axle wheel assembly further comprises a first limiting component and a second limiting component which limit the axial movement of the hinged half shaft, wherein the first limiting component comprises a steel wire clamp spring clamped on the hinged half shaft, a baffle ring connected with the hinged half shaft and propped against the steel wire clamp spring, and a support ring clamped on the steering knuckle and rotationally connected with the baffle ring; the second limiting component is a limiting block arranged on the planet gear component.

Further, the end face of the supporting ring, which is attached to the baffle ring, is provided with oil storage grooves which are uniformly distributed, and lubrication is provided for rotation between the supporting ring and the baffle ring.

Further, the planet wheel assembly comprises a planet wheel meshed with the annular gear and a planet wheel carrier fixedly connected with the hub, the planet wheel comprises a planet wheel body and rollers arranged on the inner ring of the planet wheel body, and check rings and baffles for limiting the rollers to move are arranged at two ends of the rollers.

The second aspect of the present invention provides a driving axle comprising the driving axle rim assembly.

Compared with the prior art, the invention has the beneficial effects that:

1. the inner gear ring assembly and the steering knuckle are locked by the driving axle wheel rim assembly through the locking assembly, the locking assembly comprises a locking nut and locking pieces, and grooves which are uniformly distributed are formed in the peripheral surface of the locking nut; the locking piece inner ring is provided with a bulge meshed with the locking nut groove, the bulge on the locking piece is embedded into one groove on the locking nut, the tightness between the annular gear component and the knuckle is effectively improved, and the situation that looseness or falling off can not occur in the running process of a vehicle is ensured. Meanwhile, the inner gear ring support is provided with a plurality of groups of screw holes corresponding to the adjusting locking pieces, the tightness degree of the locking nuts can be adjusted by adjusting the corresponding relation between the inner gear ring support and the screw holes on the locking pieces, and the accurate control of the tightness degree between the inner gear ring assembly and the steering knuckle can be realized by adjusting the tightness degree of the locking assembly, so that a better locking effect is achieved, and the running stability and safety of the wheels are improved.

2. A first sealing unit and a second sealing unit are arranged between a hub and a knuckle of the drive axle wheel rim assembly, and annular protrusions on the end face of the hub are inserted into annular grooves on the knuckle to form the first sealing unit between the hub and the knuckle. The cooperation of the annular recess and the annular projection forms a physical barrier that prevents small particles from entering the rotational connection between the hub and the knuckle from the outside environment. The design can ensure the tightness between the hub and the knuckle, can reduce dust, dirt and other tiny particles from entering the rotating connection part of the hub and the knuckle, and avoid influencing the rotation of the hub. The second sealing unit further increases the tightness of the joint between the steering knuckle and the end face of the hub, and prevents particles from accumulating on the rotating part, so that the problems of friction increase, abrasion aggravation or even jamming are caused. The first sealing unit and the second sealing unit can effectively prevent the occurrence of the situation, thereby prolonging the service lives of the hub and the steering knuckle and ensuring the normal operation of the hub and the steering knuckle.

Drawings

FIG. 1 is a schematic illustration of an assembly of a transaxle rim assembly of the present invention;

FIG. 2 is a schematic illustration of an assembly of a transaxle rim assembly of the present invention;

FIG. 3 is a schematic view of the steering knuckle of the present invention;

fig. 4 is a schematic structural view of the planetary gear assembly of the present invention (a is a side view, b is a front view);

FIG. 5 is an enlarged view of a portion of FIG. 3;

fig. 6 is a schematic structural view of the ring gear assembly of the present invention (a is a front view and b is a side view);

fig. 7 is a schematic structural view of the ring gear of the present invention (a is a side view, b is a front view);

FIG. 8 is an enlarged view of a portion of FIG. 6;

fig. 9 is a schematic structural view of the ring gear support of the present invention (a is a front view, b is a side view);

fig. 10 is a schematic structural view (a is a side view, and b is a front view) of the lock nut of the present invention;

FIG. 11 is a schematic structural view of the locking tab of the present invention;

FIG. 12 is a schematic view of the structure of the support ring of the present invention (a is a side view and b is a front view);

FIG. 13 is a schematic view of the structure of the retainer ring of the present invention (a is a side view and b is a front view);

fig. 14 is a schematic structural view of the steel wire clip spring according to the present invention (a is a side view, and b is a front view);

FIG. 15 is a schematic view of the assembly of the knuckle of the invention;

FIG. 16 is a schematic structural view of a stud bolt of the present invention (a is a side view, b is a front view);

in the figure:

100. a knuckle; 110. a fork arm; 120. a stepped shaft; 130. a kingpin; 140. a copper sleeve; 200. a hub; 210. a first sealing unit; 211. an annular groove; 212. an annular protrusion; 220. a second sealing unit; 230. a bolt; 300. an inner gear ring assembly; 310. an inner gear ring; 311. an annular groove; 320. an inner gear ring support; 330. a retainer ring; 400. a planetary wheel assembly; 410. a planet wheel; 411. a planet wheel body; 412. a roller; 413. a retainer; 414. a retainer ring; 415. a baffle; 416. a retainer ring; 417. a baffle; 420. a planet carrier; 430. the second limiting component; 500. a locking assembly; 510. a lock nut; 520. locking plate; 600. a first limit assembly; 610. a steel wire clamp spring; 620. a baffle ring; 630. a support ring; 700. a half shaft is hinged; 800. and an axle housing.

Detailed Description

In order to facilitate understanding of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1-3, a first aspect of the present invention provides a transaxle rim assembly coupled between an axle housing 800 and wheels for transmitting power of an engine to the wheels via axle articulation half shafts 700 to drive a vehicle; the steering knuckle comprises a steering knuckle 100, a hub 200 and a planet wheel assembly 400, wherein one end of the steering knuckle 100 is hinged with an axle housing 800, an annular gear assembly 300 and a locking assembly 500 are sleeved at the end part of the other end of the steering knuckle 100, and the annular gear assembly 300 is fixed with the steering knuckle 100 through the locking assembly 500; the hub 200 is sleeved on the outer side of the steering knuckle 100 and the ring gear assembly 300 in the circumferential direction through bearings, a first sealing unit 210 and a second sealing unit 220 are further arranged between the hub 200 and the end portion of the steering knuckle 100, the planetary gear assembly 400 comprises a planetary gear 410 and a planetary gear carrier 420 which are fixedly connected, the planetary gear 410 is meshed with the ring gear assembly 300, and the planetary gear carrier 420 is fixedly connected with the hub 200.

Referring to fig. 3-4 and 15, in some embodiments, a fork arm 110 is provided at one end of the knuckle 100 connected to the axle housing 800, pin holes for mounting a kingpin 130 are symmetrically provided at the upper and lower ends of the fork arm 110, the kingpin 130 is fixed to the knuckle 100 through the pin holes, and the bottom end of the kingpin 130 is rotatably connected to the axle housing 800 through a bearing; and a sealing oil seal is further arranged on the outer side of the bearing, the outer ring of the oil seal is assembled in the pin hole of the steering knuckle, and the lip of the inner ring of the oil seal is contacted with the main pin 130 to realize sealing. When the vehicle needs to turn, the steering hydraulic cylinder acts on the knuckle 100 to push or pull, so that the knuckle 100 swings along the axial direction of the kingpin 130 and drives the wheels to swing, thereby realizing steering. The other end of the knuckle 100 is a stepped shaft 120, and a shaft hole for the penetration of the hinge half shaft 700 is axially provided inside the stepped shaft 120. An oil seal and a copper sleeve 140 are arranged in the shaft hole of the stepped shaft 120, the copper sleeve 140 is sleeved on the hinged half shaft, an auxiliary supporting effect is achieved on the hinged half shaft, and an annular lubricating oil groove is arranged on the copper sleeve 140; the outer ring of the oil seal is assembled in the shaft hole of the stepped shaft 120, and the lip of the inner ring of the oil seal contacts with the hinged half shaft 700 to realize sealing. The end of the articulated half shaft 700 is provided with a gear integrally formed with the articulated half shaft 700, which passes through the knuckle 100 to be meshed with the planet wheel 410, and the articulated half shaft 700 drives the planet wheel 410 to rotate by taking the articulated half shaft 700 as the center; while the planet 410 meshes with the ring gear assembly 300 and rotates along the trajectory of the ring gear assembly 300. The planet wheel 410 is fixed on a planet wheel carrier 420, and the planet wheel carrier 420 plays a role in supporting the planet wheel 410; and meanwhile, the planet carrier 420 is fixedly connected with the hub 200 through the bolts 230, and finally the hinged half shaft 700 transmits the torque of the engine to the hub 200 through the planet wheel assembly 400, so that the vehicle can walk. The bolt 230 is a stud, both ends of the stud are provided with threads, and the middle part of the stud is provided with a polished rod without threads, so that the threaded stud has a limiting effect and the tightness degree of connection can be adjusted through the polished rod; the outer end of the stud is provided with a notch for screwing the stud using a screwdriver.

Referring to fig. 4-5, in some embodiments, the planet assembly 400 includes a planet carrier 420 and three planets 410, with an outer race of the planet carrier 420 extending inwardly into fixed connection with the hub 200 through bolts 230. The planetary gears 410 are uniformly arranged on the planetary gear frame 420, the centers of the three planetary gears 410 are on the same virtual circle, the three planetary gears 410 are meshed with the inner gear ring 310 on the inner gear ring assembly 300, and the hinged half shaft 700 is arranged on the center line of the planetary gear frame 420 and meshed with the three planetary gears 410 simultaneously. The center of the planet carrier 420 is provided with a second limiting assembly 430, and in this embodiment, the second limiting assembly 430 is a limiting block, which is fixed at the center of the planet carrier 420 and slidingly engages with the end of the hinge half shaft 700 to limit the hinge half shaft 700 from moving axially outwards. In this embodiment, the planet 410 includes a planet body 411, a roller 412 disposed in an inner ring of the planet body 411, and a cage 413, and retainers 414 and baffles 415 for restricting movement of the roller 412 are disposed at both ends of the roller 412. One end of the holder 413 abuts against the carrier 420, and the other end of the holder 413 is further provided with a retainer ring 416 and a baffle 417 which restrict axial movement of the holder. The conventional planet wheel bearing has a structure with a retainer ring and a baffle between two rows of rollers, and the planet wheel 410 in the embodiment is only provided with a single row of rollers 412, so that the length of the rollers 412 is longer, and the bearing capacity is strong; the structure of taking retaining ring and baffle between two rows of rollers of traditional planet wheel bearing, the retaining ring can damage and lead to the planet wheel bearing to scrap after disassembling, and planet wheel 410 bearing in this embodiment disassembles conveniently, can not cause the damage after disassembling, repeatedly usable.

Referring to fig. 6-9, in some embodiments, ring gear assembly 300 includes ring gear 310, ring gear support 320, and retainer ring 330; the inner circumferential surface of the ring gear support 320 is provided with splines connected with the knuckle 100, the outer circumferential surface of the ring gear support 320 is engaged with the inner circumferential surface of the ring gear 310 through the splines, the inner circumferential surface of the ring gear 310 is further provided with grooves in which the retainer rings 330 are installed, and the retainer rings 330 are fixed in the grooves of the ring gear 310 through interference fit. The presence of the retainer ring 330 may prevent the ring gear support 320 from moving in the axial direction with respect to the ring gear 310, ensuring stability and reliability of the connection of the ring gear 310 and the ring gear support 320. In addition, the outer circumferential surface of the ring gear 310 is further provided with two annular grooves 311, preventing stress concentration from occurring on the outer circumferential surface of the ring gear 310, thereby causing premature fatigue or fracture of the ring gear 310. By providing the annular groove 311 on the outer peripheral surface of the ring gear 310, a part of stress can be dispersed to a larger area, thereby reducing the peak of stress at any point. The manufacturing difficulty of the ring gear 310 is reduced, and the reliability and durability of the ring gear 310 are improved; thereby improving the efficiency and reliability of the wheel rim assembly.

Referring to fig. 10 to 11, in the above embodiment, the ring gear support 320 is spline-fitted to the end of the stepped shaft 120 of the knuckle 100 and is fixed together by the locking assembly 500. The locking assembly 500 comprises a locking nut 510 and locking pieces 520, wherein the locking nut 510 is sleeved at the end part of the stepped shaft 120 of the steering knuckle 100 and is abutted against the outer side of the annular gear support 320, the locking nut 510 is screwed on the stepped shaft 120 of the steering knuckle 100 through threads on the inner peripheral surface of the locking nut 510, and grooves which are uniformly distributed are formed on the outer peripheral surface of the locking nut 510; the locking piece 520 is circular arc, and its inner circle is equipped with a protruding with lock nut 510 recess engaged with, through screwing up and fine setting lock nut 510, can ensure that the protruding on the locking piece 520 can insert in a recess on the lock nut 510, and the protruding embedding lock nut 510 on the locking piece 520 is in one of them recess, can prevent effectively that lock nut 510 from taking place not hard up, can effectively lock the rim. Six evenly distributed light holes are formed in the locking piece 520, two groups of screw holes (three in each group) corresponding to three light holes of the six light holes in the locking piece 520 are formed in the annular gear support 320, and when the locking piece 520 can have the three light holes aligned with one group of screw holes in the annular gear support 320, the locking piece 520 is fixed on the annular gear support 320 through bolts; two sets (three sets) of screw holes in the collar support 420 provide at least four securing locations for the light holes in the locking tabs 520. When the bolts pass through the light holes on the locking pieces 520 and the screw holes on the ring gear support 320 to fix and lock, the relative positions of the two are fixed, and the positions of the locking pieces 520 relative to the ring gear support 320 can be moved along the peripheral outline of the locking nut 510 by selecting different screw hole pairs to fix, so that the tightness of the locking nut 510 can be adjusted. Through adjusting the fastening dynamics of locking subassembly, can ensure that the bearing between knuckle 100 and the wheel hub 200 can be in suitable bearing play scope, can realize simultaneously the accurate control to the fastening degree between ring gear subassembly 300 and the knuckle 100 to reach better locking effect, improved the stability and the security of traveling of wheel.

Referring to fig. 2 to 3, in some embodiments, the ring gear support 320 is spline-fitted to an end portion of the stepped shaft 120 of the knuckle 100, and an inner circumferential surface of the hub 200 is rotatably coupled to the stepped shaft 120 of the knuckle 100 and the ring gear support 320, respectively, through two bearings. The joint of the steering knuckle 100 and the hub 200 is provided with a first sealing unit 210 and a second sealing unit 220, the first sealing unit 210 comprises an annular groove 211 arranged on the end surface of the steering knuckle 100, which is attached to the hub 200, an annular protrusion 212 matched with the annular groove 211 is arranged on the end surface of the hub 200, and the annular protrusion 212 is inserted into the annular groove 211 to realize the first sealing connection between the hub 200 and the steering knuckle 100. The cooperation of the annular recess 211 and the annular projection 212 forms a physical barrier that prevents small particles from entering the rotational connection between the hub 200 and the knuckle 100 from the outside environment. The annular protrusion 212 on the end surface of the hub 200 has a splayed structure, so that dust and sundry particles scattered on the surface of the annular protrusion 212 can automatically fall along with the rotation of the hub 200. In addition, the bottommost portion of the annular groove 211 on the end surface of the knuckle 100 is provided with a notch, so that dust and foreign particles entering the first sealing unit 210 can fall out of the notch at the bottom of the annular groove 211, and cannot accumulate in the first sealing unit 210 and invade the second sealing unit 220. The design can ensure the tightness between the hub 200 and the knuckle 100, can reduce dust, dirt and other tiny particles from entering the rotating connection position of the hub 200 and the knuckle 100 through the gap between the hub 200 and the knuckle 100, and avoid influencing the rotation of the hub 200. For example, these particles may accumulate in the rotating parts, causing problems such as increased friction, increased wear, or even seizing. By adopting the design of annular recess 211 and annular projection 212, this is effectively prevented, thereby extending the useful life of hub 200 and knuckle 100 and ensuring proper operation thereof.

In order to further increase the tightness of the joint between the knuckle 100 and the end face of the hub 200, the second sealing unit 220 is a box-type sealing ring arranged below the annular protrusion 212 of the hub 200, and when the box-type sealing ring is placed between the joint surfaces of the knuckle 100 and the hub 200, the sealing ring deforms and fills the tiny gaps between the joint surfaces by applying pressure, so that dust, dirt and other tiny particles are more effectively prevented from entering the rotating part of the hub 200 and the knuckle 100, and the tightness and stability of the joint between the knuckle 100 and the end face of the hub 200 are increased.

Referring to fig. 12 to 14, in some embodiments, the articulated half shaft 700 is rotatably connected with the knuckle 100 through a bearing, the bearing is disposed at one end of the stepped shaft 120 shaft hole of the knuckle 100 near the axle housing 800, the drive axle rim assembly further includes a first limiting component 600 and a second limiting component 430 for limiting axial movement of the articulated half shaft 700, the first limiting component 600 is disposed at one end of the stepped shaft 120 shaft hole of the knuckle 100 far from the axle housing 800, the first limiting component 600 includes a wire clamp spring 610, a baffle ring 620 and a supporting ring 630, an annular clamping groove is disposed on the outer peripheral surface of the articulated half shaft 700, the wire clamp spring 610 is fixed in the annular clamping groove on the outer peripheral surface of the articulated half shaft 700 through an interference fit, and the baffle ring 620 is sleeved on the articulated half shaft 700 through a spline disposed on the inner peripheral surface thereof and abuts against the wire clamp spring 610; the other end face of the baffle ring 620 abuts against the supporting ring 630, two ear rings are arranged on the outer periphery of the supporting ring 630, and the two ear rings are clamped in the shaft hole of the stepped shaft 120 of the steering knuckle 100, so that the supporting ring 630 is fixedly connected with the steering knuckle 100. The inner diameter of the supporting ring 630 is larger than the outer diameter of the hinged half shaft 700 and smaller than the outer diameter of the baffle ring 620, oil storage grooves which are uniformly distributed are arranged on the end surface of the supporting ring 630, which is abutted against the baffle ring 620, so that lubrication between the supporting ring 630 and the baffle ring 620 is ensured, and abrasion caused by mutual rotation between the supporting ring 630 and the baffle ring 620 is prevented; the stability and reliability of the spacing assembly 600 is increased. In addition, an oil seal and a copper bush 140 are provided in the shaft hole of the stepped shaft 120 of the knuckle 100, the copper bush 140 is provided between the hinge half shaft 700 and the shaft hole of the stepped shaft 120, and an auxiliary supporting function is provided for the hinge half shaft 700, and both the inner circumferential surface and the outer circumferential surface of the copper bush 140 are provided with annular lubrication grooves. The outer ring of the oil seal is assembled in the shaft hole of the stepped shaft 120, and the lip of the inner ring of the oil seal contacts with the hinged half shaft 700 to realize sealing.

A second aspect of the present invention provides a drive axle comprising an axle housing 800, an articulated axle shaft 700, and a drive axle rim assembly as described above.

The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (10)

1. The driving axle wheel rim assembly is characterized by comprising a steering knuckle (100), a hub (200) and a planet wheel assembly (400), wherein one end of the steering knuckle (100) is movably connected with an axle housing (800), an inner gear ring assembly (300) and a locking assembly (500) are sleeved at the end part of the other end of the steering knuckle (100), the inner gear ring assembly (300) is fixed with the steering knuckle (100) through the locking assembly (500), and the tightness of the locking assembly (500) is adjustable; the hub (200) is rotatably sleeved on the steering knuckle (100) and the circumferential outer side of the annular gear assembly (300), and the planet wheel assembly (400) is fixed on the hub (200) and meshed with the annular gear assembly (300).

2. The drive axle rim assembly of claim 1, wherein the ring gear assembly (300) includes a ring gear (310), a ring gear support (320), and a retainer ring (330); the annular gear (310) is connected with the annular gear support (320) through a spline, the retainer ring (330) is embedded on the annular gear (310) to limit the axial movement of the annular gear support (320), and an annular groove (311) is formed in the outer peripheral surface of the annular gear (310) to prevent stress concentration on the outer peripheral surface of the annular gear (310).

3. The drive axle rim assembly according to claim 2, wherein the locking component (500) comprises a locking nut (510) and locking pieces (520), the locking nut (510) is sleeved at the end part of the steering knuckle (100), evenly distributed grooves are formed in the outer peripheral surface of the locking piece (520), the locking pieces (520) are arc-shaped, protrusions meshed with the grooves of the locking nut (510) are formed in the inner ring of the locking piece, and a plurality of light holes are formed in the locking pieces (520) and are fixed on the ring gear support (320) through bolts.

4. The drive axle rim assembly of claim 3, wherein the ring gear support (320) is provided with a plurality of sets of screw holes corresponding to the light holes on the adjusting locking pieces (520), and the tightness degree of the locking nuts (510) can be adjusted by adjusting the corresponding relation between the ring gear support (320) and the screw holes on the locking pieces (520) and adjusting the position of the locking pieces (520) relative to the ring gear support (320).

5. The drive axle rim assembly according to claim 1, wherein a first sealing unit (210) and a second sealing unit (220) are arranged at the joint of the steering knuckle (100) and the hub (200), the first sealing unit (210) comprises an annular groove (211) arranged on the end face, which is attached to the hub (200), of the steering knuckle (100), an annular protrusion (212) which is matched with the annular groove (211) on the end face of the hub (200), the annular protrusion (212) is in a splayed structure, and a notch for discharging particle sundries is arranged at the bottommost part of the annular groove (211).

6. The drive axle rim assembly according to claim 1, wherein one end of the steering knuckle (100) connected with the axle housing (800) is a fork arm (110), pin holes for installing a main pin (130) are formed in the upper end and the lower end of the fork arm (110), the main pin (130) penetrates through the pin holes and is rotationally connected with the axle housing (800) through bearings, the other end of the steering knuckle (100) is a stepped shaft (120), a shaft hole for penetrating a hinge half shaft (700) is axially formed in the stepped shaft (120), an oil seal and a copper sleeve (140) are arranged in the shaft hole of the stepped shaft (120), the copper sleeve (140) is sleeved on the hinge half shaft (700), an auxiliary supporting effect is achieved on the hinge half shaft (700), and an annular lubricating oil groove is formed in the copper sleeve (140).

7. The drive axle rim assembly of claim 6, further comprising a first stop assembly (600) and a second stop assembly (430) that limit axial movement of the articulated axle shaft (700), the first stop assembly (600) comprising a wire clamp spring (610) that engages the articulated axle shaft (700), a stop ring (620) that is connected to the articulated axle shaft (700) and rests on the wire clamp spring (610), and a support ring (630) that engages the knuckle (100) and is rotationally connected to the stop ring (620); the second limiting assembly 430 is a limiting block provided on the planetary gear assembly (400).

8. The drive axle rim assembly of claim 7, wherein the end surfaces of the support ring (630) and the stop ring (620) are provided with evenly distributed oil storage grooves, which provide lubrication for rotation between the support ring (630) and the stop ring (620).

9. The drive axle rim assembly according to claim 2, wherein the planetary wheel assembly (400) comprises a planetary wheel (410) meshed with the inner gear ring (310) and a planetary wheel carrier (420) fixedly connected with the hub (200), the planetary wheel (410) comprises a planetary wheel body (411) and rollers (412) arranged on the inner ring of the planetary wheel body (411), and retaining rings and retaining plates for limiting the movement of the rollers (412) are arranged at two ends of the rollers (412).

10. A drive axle comprising a drive axle rim assembly as claimed in any one of claims 1 to 9.