Front integral type steering drive axle assembly suitable for hard off-road vehicle

Abstract

The utility model discloses a front integral type steering drive axle assembly suitable for a hard off-road vehicle, and belongs to the technical field of automobile mechanisms. The axle mainly comprises an axle housing assembly, main speed reducer assemblies, a left steering knuckle, a right steering knuckle, a ball pin assembly and a hub bearing unit, the left steering knuckle is installed at one end of the axle housing assembly, the right steering knuckle is installed on the other side of the axle housing assembly, and the main speed reducer assemblies are installed between the left steering knuckle and the axle housing assembly and between the right steering knuckle and the axle housing assembly; ball pin assemblies are installed on the left steering knuckle and the right steering knuckle, and hub bearing units are installed on the sides, back on to the axle housing assembly, of the left steering knuckle and the right steering knuckle. By adopting the technical scheme of the integral steering drive axle assembly, the reliability of the front axle assembly is improved, the front axle assembly is more suitable for the use condition of a hard off-road vehicle, and the off-road capability of the vehicle is effectively improved. The utility model mainly optimizes the structure of the steering drive axle assembly of the off-road vehicle.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile mechanisms, and in particular relates to a front integral steering drive axle assembly suitable for a hard-core off-road vehicle. Background Art

[0002] The existing integral steering drive axle housing of light off-road vehicles adopts a three-section welded structure, with many welds, difficult to ensure quality consistency, low weld strength, and the risk of breakage under large impact during off-road driving. The three-section welded structure bridge housing has low stiffness and large deformation under large impact, which can easily cause bridge housing deformation and half-axle oil leakage, reducing reliability. In addition, the front wheel alignment parameters deteriorate, affecting vehicle performance such as handling stability. Utility Model Content

[0003] The technical problem to be solved by the utility model is: to overcome the deficiencies of the prior art and to provide a front integral steering drive axle assembly suitable for hard-core off-road vehicles. The utility model uses an integral steering drive axle assembly technical solution to improve the reliability of the front axle assembly, making it more suitable for the operating conditions of hard-core off-road vehicles and effectively improving the off-road capability of the vehicle.

[0004] The described one is a front integral steering drive axle assembly suitable for hard-core off-road vehicles, comprising a bridge housing assembly, a main reducer assembly, a left steering knuckle, a right steering knuckle, a ball pin assembly, and a wheel hub bearing unit. A left steering knuckle is installed at one end of the bridge housing assembly, and a right steering knuckle is installed at the other side. The main reducer assembly is installed between the left steering knuckle and the bridge housing assembly, and between the right steering knuckle and the bridge housing assembly. Ball pin assemblies are installed on the left steering knuckle and the right steering knuckle, and wheel hub bearing units are installed on the side of the left steering knuckle and the right steering knuckle facing away from the bridge housing assembly.

[0005] Preferably, the bridge housing assembly includes a bridge housing body, a diamond plate, a steering shock absorber bracket, a left spring seat, a right spring seat, a left upper control arm bracket, a left lower control arm bracket, a right upper control arm bracket, a right lower control arm bracket, a transverse thrust rod bracket, a left shock absorber bracket, a right shock absorber bracket, a left steering yoke, and a right steering yoke. The diamond plate is fixed to one side of the bridge housing body, and the length of the left side of the bridge housing body is less than the length of the right side thereof; the steering shock absorber bracket is installed on the right side of the bridge housing body; the left spring seat and the right spring seat are respectively installed on the The left shock absorber bracket is installed on the left and right sides, and the left shock absorber bracket is installed below the left spring seat, and the right shock absorber bracket is installed below the right spring seat; the left upper control arm bracket and the right upper control arm bracket are installed on the top of the bridge housing body, located on both sides of the diamond plate; the left lower control arm bracket and the right lower control arm bracket are installed at the bottom of the bridge housing body, located between the left shock absorber bracket and the right shock absorber bracket; the lateral thrust rod is installed on one side of the bridge housing body, adjacent to the right spring seat; the left steering yoke is installed at the left end of the bridge housing body, and the right steering yoke is installed at the right end of the bridge housing body.

[0006] Preferably, a left constant velocity drive half shaft is installed at one end of the inner side of the bridge housing body, and a right constant velocity drive half shaft is installed at the other end; and the end of the left constant velocity drive half shaft away from the diamond plate extends into the left steering knuckle, and the end of the right constant velocity drive half shaft away from the diamond plate extends into the right steering knuckle.

[0007] Preferably, an oil seal assembly is provided at the connection between the left constant velocity drive half shaft and the left steering knuckle, and at the connection between the right constant velocity drive half shaft and the right steering knuckle.

[0008] Preferably, the oil seal assembly comprises an inner half-shaft oil seal and an outer half-shaft oil seal, and both are floating structures; wherein the outer half-shaft oil seal is provided with a plurality of dustproof lips.

[0009] Preferably, one end of the left constant velocity drive half shaft and the right constant velocity drive half shaft is connected with a fixed ball cage universal joint.

[0010] Preferably, the main reducer comprises a driving gear, a main gear inner bearing, a driven gear, and a differential bearing, wherein the driving gear and the driven gear are arranged adjacent to each other and are sequentially installed in the main reducer; wherein the main gear inner bearing is installed in the driving gear; and the differential bearing is installed on the side of the driven gear facing away from the driving gear.

[0011] Preferably, the driving gear and the driven gear have equal-height teeth.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The front axle housing adopts an integrated front axle housing assembly made of a whole steel plate stamping and welding, which not only reduces the welds and improves the overall rigidity, but also increases the overall impact resistance, effectively reducing the bending deformation of the front axle housing and the oil leakage of the half-axle oil seal under off-road conditions.

[0014] 2. The inner and outer oil seals of the driving half-shaft oil seal adopt a floating structure design to increase the follow-up performance of the oil seal when the half-shaft swings under extreme off-road conditions such as manufacturing tolerances and leaps, thereby improving the oil seal's anti-leakage performance.

[0015] 3. The gear adopts equal height tooth structure, which effectively reduces gear noise. At the same time, increasing the bearing specifications not only increases its service life, but also improves the support stiffness of the active / passive gears and the matching accuracy of the active / passive gears.

[0016] 4. The differential adopts the combination of ordinary differential and electronically controlled locking differential, which effectively improves the driving safety and escape ability of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is the front view of the utility model;

[0018] Figure 2 It is a schematic diagram of the axle housing body structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the installation of the ball pin assembly of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the oil seal assembly of the utility model;

[0021] Figure 5 This is a schematic diagram of the installation position of the driving gear and the passive gear of the utility model.

[0022] In the figure, 100, axle housing assembly; 110, axle housing body; 111, left constant velocity drive half shaft; 112, right constant velocity drive half shaft; 120, diamond plate; 130, steering shock absorber bracket; 140, left spring seat; 141, right spring seat; 150, left upper control arm bracket; 151, left lower control arm bracket; 152, right upper control arm bracket; 153, right lower control arm bracket; 160, lateral thrust rod bracket; 170, left shock absorber bracket; 171. Right shock absorber bracket; 180. Left steering yoke; 181. Right steering yoke; 190. Oil seal assembly; 191. Inner half-shaft oil seal; 192. Outer half-shaft oil seal; 200. Main reducer assembly; 210. Driving gear; 211. Inner bearing of main gear; 220. Passive gear; 300. Left steering knuckle; 310. Right steering knuckle; 330. Ball pin assembly; 331. Upper ball pin; 332. Lower ball pin; 340. Wheel hub bearing unit. DETAILED DESCRIPTION

[0023] The utility model is further described below in conjunction with the accompanying drawings:

[0024] The directional nouns involved in the detailed description paragraphs are only for the convenience of those skilled in the art to understand the technical solutions described in this application according to the visual orientation shown in the accompanying drawings. Unless otherwise clearly specified and limited, the terms "setting", "installation", "connection", etc. should be understood in a broad sense. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0025] like Figure 1 and Figure 2As shown, a front integral steering drive axle assembly suitable for a hard-core off-road vehicle includes a bridge housing assembly 100, a main reducer assembly 200, a left steering knuckle 300, a right steering knuckle 310, a ball pin assembly 330, and a wheel hub bearing unit. The left steering knuckle 300 is installed at one end of the bridge housing assembly 100, and the right steering knuckle 310 is installed on the other side, and the main reducer assembly 200 is installed between the left steering knuckle 300 and the bridge housing assembly 100, and between the right steering knuckle 310 and the bridge housing assembly 100; the ball pin assembly 330 is installed on the left steering knuckle 300 and the right steering knuckle 310, and the wheel hub bearing unit is installed on the side of the left steering knuckle 300 and the right steering knuckle 310 facing away from the bridge housing assembly 100.

[0026] Optionally, the left steering knuckle 300 and the right steering knuckle 310 are both made of 40Cr alloy steel forging process structure. In this way, the structural strength and toughness of the left steering knuckle 300 and the right steering knuckle 310, as well as the impact resistance are effectively improved, thereby extending the service life of the left steering knuckle 300 and the right steering knuckle 310.

[0027] like Figure 3 As shown, the ball pin assembly 330 includes an upper ball pin 331 and a lower ball pin 332, and the upper ball pin 331 and the lower ball pin 332 are a set, and the two are adapted to be connected with the left steering knuckle 300 and the right steering knuckle 310. In this way, through the mutual cooperation between the upper ball pin 331 and the lower ball pin 332, the left steering yoke 180 and the left steering knuckle 300, the right steering yoke 181 and the right steering knuckle 310 are stably connected.

[0028] like Figure 1 and Figure 2As shown, the bridge housing assembly 100 includes a bridge housing body 110, a diamond plate 120, a steering damper bracket 130, a left spring seat 140, a right spring seat 141, a left upper control arm bracket 150, a left lower control arm bracket 151, a right upper control arm bracket 152, a right lower control arm bracket, a transverse thrust rod bracket 160, a left shock absorber bracket 170, a right shock absorber bracket 171, a left steering yoke 180, and a right steering yoke 181. The diamond plate 120 is fixed to one side of the bridge housing body 110, and the length of the left side of the bridge housing body 110 is less than the length of the right side thereof; the steering damper bracket 130 is installed on the right side of the bridge housing body 110; the left spring seat 140 and the right spring seat 141 are respectively installed on the bridge housing. A left shock absorber bracket 170 is installed on the left and right sides of the main body 110, and below the left spring seat 140, and a right shock absorber bracket 171 is installed below the right spring seat 141; the left upper control arm bracket 150 and the right upper control arm bracket 152 are installed on the top of the bridge housing body 110, located on both sides of the diamond plate 120; the left lower control arm bracket 151 and the right lower control arm bracket are installed at the bottom of the bridge housing body 110, located between the left shock absorber bracket 170 and the right shock absorber bracket 171; the lateral thrust rod is installed on one side of the bridge housing body 110, adjacent to the right spring seat 141; the left steering yoke 180 is installed at the left end of the bridge housing body 110, and the right steering yoke 181 is installed at the right end of the bridge housing body 110.

[0029] Optionally, the bridge housing body 110 is an integral stamping structure of a steel plate and is welded and fixed to the diamond plate 120. In this way, after the integral stamping structure of the bridge housing body 110 is fixed to the diamond plate 120, its welds only have two straight welds and one circular weld. Compared with the traditional three-stage and upper and lower bridge housings, the integral stamping structure has the characteristics of high rigidity and small deformation, and is suitable for use in hardcore off-road vehicles.

[0030] like Figure 1 As shown, a left constant velocity drive half shaft 111 is installed at one end of the inner side of the bridge housing body 110, and a right constant velocity drive half shaft 112 is installed at the other end; and the end of the left constant velocity drive half shaft 111 away from the diamond plate 120 extends to the left steering knuckle 300, and the end of the right constant velocity drive half shaft 112 away from the diamond plate 120 extends to the right steering knuckle 310.

[0031] like Figure 1 As shown, the connection between the left constant velocity drive half shaft 111 and the left steering knuckle 300, and the connection between the right constant velocity drive half shaft 112 and the right steering knuckle 310 are both provided with an oil seal assembly 190. In this way, the oil seal assembly 190 can reduce the oil leakage of the connection between the left constant velocity drive half shaft 111 and the left steering knuckle 300 and / or the connection between the right constant velocity drive half shaft 112 and the right steering knuckle 310 under the action of external force, so as to improve the airtightness of the connection, thereby extending its service life.

[0032] like Figure 1 and Figure 4 As shown, the oil seal assembly 190 includes an inner half-shaft oil seal 191 and an outer half-shaft oil seal 192, and both are floating structures; wherein the outer half-shaft oil seal 192 is provided with a plurality of dustproof lips. In this way, the inner half-shaft oil seal 191 and the outer half-shaft oil seal 192 of the floating structure can increase the followability between the oil seal and the half-shaft under extreme off-road conditions such as manufacturing tolerance and leaping, and effectively improve the performance of the oil seal in preventing oil leakage.

[0033] like Figure 1 and Figure 3 As shown, one end of the left constant velocity drive half shaft 111 and the right constant velocity drive half shaft 112 is connected with a fixed ball cage universal joint. Thus, compared with the traditional universal joint, the number of teeth of the internal and external splines of the BJ130 type fixed ball cage universal joint is 30, and the diameter of the half shaft rod is increased to 31mm, which effectively improves the strength and service life of the drive half shaft.

[0034] like Figure 5 As shown, the main reducer includes a driving gear 210, a main gear inner bearing 211, a driven gear, and a differential bearing. The driving gear 210 and the driven gear are arranged adjacent to each other and are installed in the main reducer in sequence; wherein the main gear inner bearing 211 is installed in the driving gear 210; and the differential bearing is installed on the side of the driven gear facing away from the driving gear 210.

[0035] Optionally, the specifications of the main gear inner bearing 211 and the differential bearing are increased in proportion. In this way, by increasing the main gear inner bearing 211 and the differential bearing in proportion, not only the service life of the bearing is increased, but also the support strength of the active / passive gear is increased. This further improves the matching accuracy between the gears and the service life of the gears, and also reduces the operating noise of the rear axle.

[0036] Optionally, the driving gear 210 and the driven gear are equal-height teeth. In this way, the equal-height teeth can reduce the running noise between the gears relative to the reduced teeth, so as to improve the driving comfort.

[0037] Finally, although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A front integral steering drive axle assembly suitable for a hard-core off-road vehicle, comprising an axle housing assembly (100), a main reducer assembly (200), a left steering knuckle (300), a right steering knuckle (310), a ball pin assembly (330), and a wheel hub bearing unit (340) (340), characterized in that: A left steering knuckle (300) is installed at one end of the axle housing assembly (100), and a right steering knuckle (310) is installed at the other end, and a main reducer assembly (200) is installed between the left steering knuckle (300) and the axle housing assembly (100), and between the right steering knuckle (310) and the axle housing assembly (100); a ball pin assembly (330) is installed on the left steering knuckle (300) and the right steering knuckle (310), and a wheel hub bearing unit (340) is installed on the side of the left steering knuckle (300) and the side of the right steering knuckle (310) facing away from the axle housing assembly (100).

2. The front integral steering drive axle assembly suitable for hardcore off-road vehicles according to claim 1, characterized in that: The axle housing assembly (100) comprises an axle housing body (110), a diamond plate (120), a steering damper bracket (130), a left spring seat (140), a right spring seat (141), a left upper control arm bracket (150), a left lower control arm bracket (151), a right upper control arm bracket (152), a right lower control arm bracket (153), a transverse thrust rod bracket (160), a left damper bracket (170), a right damper bracket (171), a left steering yoke (180), and a right steering yoke (181). The diamond plate (120) is fixed to one side of the axle housing body (110), and the length of the left side of the axle housing body (110) is shorter than the length of the right side thereof; the steering damper bracket (130) is mounted on the right side of the axle housing body (110); the left spring seat (140) and the right spring seat (141) are respectively mounted on the axle housing body (110). The left and right sides of the axle housing body (110) are provided with a left shock absorber bracket (170) below the left spring seat (140), and a right shock absorber bracket (171) below the right spring seat (141); the left upper control arm bracket (150) and the right upper control arm bracket (152) are installed on the top of the axle housing body (110) and are located on both sides of the diamond plate (120); the left lower control arm bracket (151) and the right lower control arm bracket (153) are installed on the bottom of the axle housing body (110) and are located between the left shock absorber bracket (170) and the right shock absorber bracket (171); the lateral thrust rod bracket (160) is installed on one side of the axle housing body (110) and is adjacent to the right spring seat (141); the left steering yoke (180) is installed on the left end of the axle housing body (110), and the right steering yoke (181) is installed on the right end of the axle housing body (110).

3. The front integral steering drive axle assembly suitable for hardcore off-road vehicles according to claim 2 is characterized in that: A left constant velocity drive half shaft (111) is installed at one end of the inner side of the bridge housing body (110), and a right constant velocity drive half shaft (112) is installed at the other end; and one end of the left constant velocity drive half shaft (111) away from the diamond plate (120) extends into the left steering knuckle (300), and one end of the right constant velocity drive half shaft (112) away from the diamond plate (120) extends into the right steering knuckle (310).

4. The front integral steering drive axle assembly suitable for hardcore off-road vehicles according to claim 3 is characterized by: An oil seal assembly (190) is provided at the connection between the left constant velocity drive half shaft (111) and the left steering knuckle (300), and at the connection between the right constant velocity drive half shaft (112) and the right steering knuckle (310).

5. The front integral steering drive axle assembly suitable for hardcore off-road vehicles according to claim 4 is characterized in that: The oil seal assembly (190) comprises an inner half-shaft oil seal (191) and an outer half-shaft oil seal (192), and both are floating structures; wherein the outer half-shaft oil seal (192) is provided with a plurality of dustproof lips.

6. The front integral steering drive axle assembly suitable for hardcore off-road vehicles according to claim 3 is characterized by: One end of the left constant velocity drive half shaft (111) and the right constant velocity drive half shaft (112) is connected to a fixed ball cage universal joint.

7. The front integral steering drive axle assembly suitable for hardcore off-road vehicles according to claim 1, characterized in that: The main reducer assembly (200) comprises a driving gear (210), a main gear inner bearing (211), a driven gear (220), and a differential bearing (221); the driving gear (210) and the driven gear (220) are arranged adjacent to each other and are sequentially installed in the main reducer assembly (200); wherein the main gear inner bearing (211) is installed in the driving gear (210); and the differential bearing (221) is installed on a side of the driven gear (220) that faces away from the driving gear (210).

8. The front integral steering drive axle assembly suitable for hardcore off-road vehicles according to claim 7 is characterized in that: The driving gear (210) and the driven gear (220) have teeth of equal height.

Images