CN107284135B - Steering drive axle with normal ground clearance - Google Patents

Steering drive axle with normal ground clearance Download PDF

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Publication number
CN107284135B
CN107284135B CN201710398878.9A CN201710398878A CN107284135B CN 107284135 B CN107284135 B CN 107284135B CN 201710398878 A CN201710398878 A CN 201710398878A CN 107284135 B CN107284135 B CN 107284135B
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front axle
hinged
steering
shell
bracket
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CN107284135A (en
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徐国艳
高峰
李瑞川
刘本勇
姜惠
王景瑶
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Beihang University
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Beijing University of Aeronautics and Astronautics
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60BVEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B35/00Axle units; Parts thereof ; Arrangements for lubrication of axles
    • B60B35/003Steerable axles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60BVEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B35/00Axle units; Parts thereof ; Arrangements for lubrication of axles
    • B60B35/12Torque-transmitting axles
    • B60B35/121Power-transmission from drive shaft to hub
    • B60B35/127Power-transmission from drive shaft to hub using universal joints
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60BVEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B35/00Axle units; Parts thereof ; Arrangements for lubrication of axles
    • B60B35/12Torque-transmitting axles
    • B60B35/14Torque-transmitting axles composite or split, e.g. half- axles; Couplings between axle parts or sections
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60BVEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B35/00Axle units; Parts thereof ; Arrangements for lubrication of axles
    • B60B35/12Torque-transmitting axles
    • B60B35/16Axle housings
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62DMOTOR VEHICLES; TRAILERS
    • B62D7/00Steering linkage; Stub axles or their mountings
    • B62D7/16Arrangement of linkage connections

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Steering-Linkage Mechanisms And Four-Wheel Steering (AREA)

Abstract

本发明公开了一种正常地隙的转向驱动桥,包括前桥壳体,前桥壳体中间通过摇摆轴和前桥支架与托架铰接;前桥壳体两端连有末端壳体,末端壳体外侧铰接有转向节,两侧末端壳体与托架之间均设有铰接拉杆,两侧转向节之间铰接转向横拉杆;前桥壳体内装有主减速器和差速器总成以及与差速器总成连接的两个内半轴,两个内半轴通过万向节连接两侧外半轴。本发明的优点在于:在不规则地面或者坡地等路况时,车轮与前桥壳体之间的角度可以随之改变,使其可以配合大坡度的车身姿态自调平,又可以增强轮胎与地面的接触面,增强了行驶及作业的安全性和稳定性。且此桥为驱动桥,保证车辆的大驱动力和克服障碍、防止打滑的能力。

The invention discloses a steering drive axle with normal ground clearance, which comprises a front axle housing, the middle of which is hinged with a bracket through a swing shaft and a front axle support; Steering knuckles are hinged on the outer side of the casing, hinged tie rods are arranged between the end casings on both sides and the bracket, and steering tie rods are hinged between the steering knuckles on both sides; the main reducer and differential assembly are installed in the front axle housing And the two inner half shafts connected with the differential assembly, the two inner half shafts are connected to the outer half shafts on both sides through universal joints. The advantage of the present invention is that the angle between the wheel and the front axle housing can be changed accordingly on irregular ground or sloping ground, so that it can be self-leveled in accordance with the posture of the vehicle body with a large slope, and can also strengthen the relationship between the tire and the ground. The contact surface enhances the safety and stability of driving and operation. And this bridge is a driving bridge, which ensures the large driving force of the vehicle and the ability to overcome obstacles and prevent skidding.

Description

一种正常地隙的转向驱动桥A Steering Drive Axle with Normal Ground Clearance

技术领域technical field

本发明涉及一种车辆转向桥,尤其涉及一种正常地隙的转向驱动桥。The invention relates to a vehicle steering axle, in particular to a normal clearance steering drive axle.

背景技术Background technique

丘陵山地多以不规则地面、坡地等地面为主,传统拖拉机在丘陵山区转移及农田作业时,地形及地面引起的拖拉机姿态变化情况复杂多变,机组行驶稳定性差,驾驶人员安全性难以保障。因此,为保证拖拉机在山地的适应性,实现拖拉机在坡地车身自调平,需要一种新型转向桥,即可以自动适应路面,又可以配合姿态主动调平装置和行走机构使车身调平。Hilly and mountainous areas are mostly dominated by irregular ground, slopes and other ground. When traditional tractors are transferred in hilly areas and farmland operations, the terrain and ground-induced changes in tractor attitude are complex and changeable. The driving stability of the unit is poor, and the safety of the driver is difficult to guarantee. Therefore, in order to ensure the adaptability of the tractor in the mountains and realize the self-leveling of the tractor body on the slope, a new type of steering axle is needed, which can automatically adapt to the road surface and can cooperate with the attitude active leveling device and the running mechanism to level the body.

丘陵山区的地块通常凹凸不平,拖拉机作业时各个轮胎与地面不能充分接触,导致动力性和行驶稳定性下降。因此需要一种新型转向桥,可以与使轮胎与地面充分接触。The land in hilly and mountainous areas is usually uneven, and each tire cannot fully contact the ground when the tractor is operating, resulting in a decrease in power and driving stability. Therefore need a kind of novel steering axle, can fully contact with making tire and ground.

全轮驱动车辆有较大的驱动力和克服障碍、防止打滑的能力。在许多全轮驱动的拖拉机,前桥除了作为转向桥外,还兼顾驱动桥的作用。All-wheel drive vehicles have greater driving force and the ability to overcome obstacles and prevent skidding. In many all-wheel drive tractors, the front axle also serves as the drive axle in addition to the steering axle.

但是现有拖拉机前桥,在与地面适应的同时,不能保证各个轮胎与地面充分接触,容易导致稳定性差,易侧翻等安全隐患。However, the existing tractor front axle cannot ensure that each tire is in full contact with the ground while adapting to the ground, which easily leads to poor stability, easy rollover and other safety hazards.

发明内容Contents of the invention

为了解决上述问题,本发明的目的是提供一种正常地隙的转向驱动桥,可适应不规则路况及坡地,且能保证轮胎与地面充分接触,可以配合车身姿态调平,保持车身的稳定。In order to solve the above problems, the object of the present invention is to provide a steering drive axle with normal ground clearance, which can adapt to irregular road conditions and slopes, and can ensure that the tires are fully in contact with the ground, and can be adjusted with the vehicle body posture to maintain the stability of the vehicle body.

本发明是一种正常地隙的转向驱动桥,其包括前桥壳体,前桥壳体中间通过摇摆轴和前桥支架与托架铰接,其中前桥支架与托架固定连接,保证前桥壳体可以绕着机身转动;前桥壳体两端连有末端总成,末端总成包括连接在前桥壳体末端的末端壳体和转向节,末端壳体上外侧连接有转向节。The present invention is a steering drive axle with normal ground clearance, which includes a front axle housing, and the center of the front axle housing is hinged with a bracket through a swing shaft and a front axle bracket, wherein the front axle bracket is fixedly connected with the bracket to ensure that the front axle The housing can rotate around the fuselage; the two ends of the front axle housing are connected with a terminal assembly, and the terminal assembly includes a terminal housing connected to the end of the front axle housing and a steering knuckle, and a steering knuckle is connected on the outer side of the terminal housing.

进一步的,所述前桥壳体为整体式桥壳,该前桥壳体为水平的。Further, the front axle housing is an integral axle housing, and the front axle housing is horizontal.

进一步的,末端壳体与前桥壳体之间铰接,保证末端壳体可以绕着前桥壳体转动;转向节铰接于末端壳体,保证转向节可以绕着末端壳体转动;两侧的末端壳体与托架之间均铰接有拉杆,两侧转向节之间铰接有转向横拉杆。Further, the end housing is hinged with the front axle housing to ensure that the end housing can rotate around the front axle housing; the steering knuckle is hinged to the end housing to ensure that the steering knuckle can rotate around the end housing; Tie rods are hinged between the end shell and the bracket, and steering tie rods are hinged between the steering knuckles on both sides.

进一步的,拉杆两端分别与末端壳体和托架铰接,前桥壳体分别与末端壳体和前桥支架铰接,在不规则地面或者坡地等路况时,车轮与前桥壳体之间的角度随着改变,使其可以配合大坡度的车身姿态自调平,且可以适应不规则地面,又可以增强轮胎与地面的接触面积,增强行驶安全性和行驶稳定性;Further, the two ends of the pull rod are respectively hinged with the end housing and the bracket, and the front axle housing is respectively hinged with the end housing and the front axle support. As the angle changes, it can be self-leveled with a large slope body posture, and can adapt to irregular ground, and can also increase the contact area between the tire and the ground, enhancing driving safety and driving stability;

进一步的,前桥壳体、末端壳体、托架和拉杆铰接呈四边形状,保证了机构的稳定性;Furthermore, the front axle housing, the end housing, the bracket and the tie rod are hinged in a quadrilateral shape, which ensures the stability of the mechanism;

进一步的,前桥壳体内装有主减速器和差速器总成、与主减速器和差速器总成连接的两侧内半轴以及与两侧内半轴通过内万向节连接的两侧中半轴,所述两侧中半轴通过两侧外万向节连接两侧外半轴;其动力经过主减速器和差速器总成传至左、右内半轴和左、右内万向节及左、右中半轴,然后传至左、右外万向节及左、右外半轴(传动轴)传到左、右两轮毂,使驱动轮旋转。Further, the front axle housing is equipped with the main reducer and differential assembly, the inner half shafts on both sides connected with the final drive and differential assembly, and the inner half shafts connected to the inner half shafts on both sides through inner universal joints. The middle half shafts on both sides are connected to the outer half shafts on both sides through the outer universal joints on both sides; the power is transmitted to the left and right inner half shafts and the left and right inner half shafts through the final drive and differential assembly. The right inner universal joint and the left and right intermediate shafts are passed to the left and right outer universal joints and the left and right outer half shafts (transmission shafts) to the left and right two hubs to rotate the driving wheels.

进一步的,所述末端壳体和所述转向节均为是中空的,所述前桥壳体与末端壳体铰接轴线(旋转轴线)和所述转向节与末端壳体铰接轴线(主销轴线)相交于所述外万向节中心。因此,可避免自动适应路况、驱动和转向的运动干涉。Further, both the end housing and the steering knuckle are hollow, and the hinge axis (rotation axis) between the front axle housing and the end housing and the hinge axis (king pin axis) between the steering knuckle and the end housing ) intersects at the center of the outer gimbal. As a result, kinematic interventions for automatic adaptation to road conditions, drive and steering are avoided.

本发明一种正常地隙的转向驱动桥,其优点在于:A steering drive axle with a normal ground clearance of the present invention has the advantages of:

1.本发明一种正常地隙的转向驱动桥,前桥壳体即可以围绕中心摇摆轴旋转,又可以围绕末端壳体前后旋转轴旋转,保证前桥壳体可以自动适应不规则路况或坡地等工况。1. The present invention is a steering drive axle with normal ground clearance. The front axle housing can rotate around the center swing axis, and can also rotate around the front and rear rotation axes of the end housing, so as to ensure that the front axle housing can automatically adapt to irregular road conditions or slopes Waiting for working conditions.

2.本发明一种正常地隙的转向驱动桥,在末端壳体与托架之间铰接拉杆,可以使车轮与车桥之间的角度随路况变化,增强轮胎与地面的接触面积,在自动适应路况的同时保持车身的稳定。2. A steering drive axle with normal ground clearance in the present invention, the tie rod is hinged between the end shell and the bracket, so that the angle between the wheel and the axle can change with the road conditions, and the contact area between the tire and the ground can be enhanced, and the automatic Keep the body stable while adapting to the road conditions.

3.本发明一种正常地隙的转向驱动桥,横拉杆与车桥之间铰接成四边形,保证了机构可以稳定的适应路况变化。3. The steering drive axle with normal ground clearance of the present invention, the tie rod and the axle are hinged to form a quadrilateral, which ensures that the mechanism can stably adapt to changes in road conditions.

4.本发明一种正常地隙的转向驱动桥,其中主销轴线、前桥壳体与末端壳体铰接的旋转轴轴线相交于一点,通过万向节十字万向轴轴线,可避免转向、驱动和自动适应地面的过程中运动不干涉,也保证了在转向过程中动力不中断。4. A steering drive axle with normal ground clearance in the present invention, wherein the kingpin axis, the axis of the rotating shaft hinged by the front axle housing and the end housing intersect at one point, and the cross cardan shaft axis of the universal joint can avoid steering, The movement does not interfere during the process of driving and automatically adapting to the ground, and it also ensures that the power is not interrupted during the steering process.

附图说明Description of drawings

图1是本发明专利的一种实施方案的结构示意图。Fig. 1 is a structural schematic diagram of an embodiment of the patent of the present invention.

图2是图1的俯视图。FIG. 2 is a top view of FIG. 1 .

图3是图1的主视图。Fig. 3 is a front view of Fig. 1 .

图4是前桥壳体与托架连接的结构示意图。Fig. 4 is a schematic diagram of the connection between the front axle housing and the bracket.

图5是图1中姿态调整机构的结构示意图。Fig. 5 is a schematic structural diagram of the attitude adjustment mechanism in Fig. 1 .

图6是图1中转向系统的结构示意图。Fig. 6 is a schematic structural diagram of the steering system in Fig. 1 .

图7是驱动方案示意图。Figure 7 is a schematic diagram of the driving scheme.

图中具体标号如下:The specific labels in the figure are as follows:

1、左转向节 2、左末端壳体 3、左拉杆 4、托架1. Left steering knuckle 2. Left end housing 3. Left tie rod 4. Bracket

5、右拉杆 6、右末端壳体 7、右转向节 8、前桥壳体5. Right tie rod 6. Right end housing 7. Right steering knuckle 8. Front axle housing

9、前桥支架 10、转向横拉杆 11、右螺栓 12、左螺栓9. Front axle bracket 10. Steering tie rod 11. Right bolt 12. Left bolt

13、右拉杆内侧销轴 14、右拉杆外侧销轴13. Inner pin shaft of right tie rod 14. Outer pin shaft of right tie rod

15、旋转轴 16、左销轴 17、左主销 18、右主销15. Rotation shaft 16. Left pin shaft 17. Left kingpin 18. Right kingpin

19、右销轴 20、左旋转轴 21、左外半轴 22、左外万向节19. Right pin shaft 20. Left rotation shaft 21. Left outer half shaft 22. Left outer universal joint

23、左中半轴 24、左内万向节 25、左内半轴23. Left central half shaft 24. Left inner universal joint 25. Left inner half shaft

具体实施方式Detailed ways

下面通过附图和实施例,进一步阐述本发明。在下面的详细阐述中,只通过说明方式描述了本发明的某些示范性实施例。毋庸置疑,本领域的普通技术人员可以认识到,在不偏离本发明的精神和范围的情况下,可以用各种不同的方式对所描述的实施例进行修正。因此,附图和描述的本质是说明性的,而不是用于限制权力要求的保护范围。Below through accompanying drawing and embodiment, further set forth the present invention. In the following detailed description, certain exemplary embodiments of the invention are described by way of illustration only. Needless to say, those skilled in the art would realize that the described embodiments can be modified in various different ways, all without departing from the spirit and scope of the present invention. Accordingly, the drawings and descriptions are illustrative in nature and not intended to limit the scope of the claims.

如图1、2、3所示,一种正常地隙的转向驱动桥,其外部装置包括:前桥壳体8、托架4、前桥支架9、转向横拉杆10、左拉杆3、右拉杆5、左末端壳体2、右末端壳体6、左转向节 1、右转向节7。其中,前桥壳体8为整体式桥壳,且为水平的。As shown in Figures 1, 2 and 3, a steering drive axle with normal ground clearance, its external devices include: front axle housing 8, bracket 4, front axle bracket 9, steering tie rod 10, left tie rod 3, right Pull rod 5, left end housing 2, right end housing 6, left steering knuckle 1, right steering knuckle 7. Wherein, the front axle housing 8 is an integral axle housing and is horizontal.

如图4所示,该种高地隙的转向驱动桥包括前桥壳体8,前桥壳体8中间通过摇摆轴和前桥支架9与托架4铰接,其中前桥支架9与托架4通过左螺栓12和右螺栓11固定连接,保证前桥壳体8可以绕着托架4转动。As shown in Figure 4, the steering drive axle of this kind of high ground clearance includes a front axle housing 8, and the middle of the front axle housing 8 is hinged with the bracket 4 through the swing shaft and the front axle bracket 9, wherein the front axle bracket 9 and the bracket 4 The left bolt 12 and the right bolt 11 are fixedly connected to ensure that the front axle housing 8 can rotate around the bracket 4 .

如图5所示,前桥壳体8末端铰接有右末端壳体6,前桥壳体8末端设有销轴孔,且销轴孔水平,右末端壳体6通过旋转轴15绕着前桥壳体8转动。托架4右侧设有销轴座腔,右末端壳体6上端设有销轴座腔,且所设右拉杆内侧销轴13和右拉杆外侧销轴14均为水平,右拉杆5内侧通过右拉杆内侧销轴13与托架4铰接,右拉杆5外侧通过右拉杆外侧销轴14 与右末端壳体6铰接。前桥壳体8、右末端壳体6、右拉杆5、托架4铰接呈四边形,构成姿态调整机构,保证机构运动的稳定性。As shown in Figure 5, the right end housing 6 is hinged at the end of the front axle housing 8, the end of the front axle housing 8 is provided with a pin hole, and the pin hole is horizontal, and the right end housing 6 passes through the rotating shaft 15 around the front The axle housing 8 rotates. The right side of the bracket 4 is provided with a pin seat cavity, and the upper end of the right end housing 6 is provided with a pin seat cavity, and the inner pin shaft 13 of the right tie rod and the outer pin shaft 14 of the right tie rod are both horizontal, and the inner side of the right tie rod 5 passes through The inner pin shaft 13 of the right tie rod is hinged with the bracket 4, and the outer side of the right tie rod 5 is hinged with the right end housing 6 through the outer pin shaft 14 of the right tie rod. The front axle housing 8, the right end housing 6, the right tie rod 5, and the bracket 4 are hinged to form a quadrilateral, forming a posture adjustment mechanism to ensure the stability of the movement of the mechanism.

与上述图5结构类似,前桥壳体8末端铰接有左末端壳体2,前桥壳体8末端设有销轴孔,且销轴孔水平,左末端壳体2通过销轴绕着前桥壳体8转动。托架4左侧设有销轴座腔,左末端壳体2上端设有销轴座腔,且所设销轴均水平,左拉杆3两端分别于与末端壳体6和托架4铰接。前桥壳体8、左末端壳体2、左拉杆5、托架4铰接呈四边形,构成姿态调整机构,保证机构运动的稳定性。Similar to the structure in Fig. 5 above, the left end housing 2 is hinged at the end of the front axle housing 8, the end of the front axle housing 8 is provided with a pin hole, and the pin hole is horizontal, and the left end housing 2 is wound around the front through the pin shaft. The axle housing 8 rotates. The left side of the bracket 4 is provided with a pin seat cavity, and the upper end of the left end shell 2 is provided with a pin seat cavity, and the set pin shafts are all horizontal, and the two ends of the left pull rod 3 are respectively hinged with the end shell 6 and the bracket 4 . The front axle housing 8, the left end housing 2, the left tie rod 5, and the bracket 4 are hinged to form a quadrilateral, forming an attitude adjustment mechanism to ensure the stability of the movement of the mechanism.

上述装置保证了,在不规则地面或者坡地等路况时,由于前桥壳体8可以绕着托架4转动,右末端壳体6(或左末端壳体2)均可绕着前桥壳体8转动,则右末端壳体6(或左末端壳体 2)与前桥壳体8之间的角度随之改变,右车轮(或右车轮)与前桥壳体8之间的角度随着改变,使其可以配合大坡度的车身姿态自调平,且可以适应不规则地面,又可以增强轮胎与地面的接触面积,增强行驶安全性和行驶稳定性。The above-mentioned device ensures that when the road conditions such as irregular ground or sloping ground, since the front axle housing 8 can rotate around the bracket 4, the right end housing 6 (or the left end housing 2) can be around the front axle housing 8 turns, the angle between the right end housing 6 (or left end housing 2) and the front axle housing 8 changes accordingly, and the angle between the right wheel (or right wheel) and the front axle housing 8 changes with the The change enables it to be self-leveling with a large slope body posture, and can adapt to irregular ground, and can also increase the contact area between the tire and the ground, and enhance driving safety and driving stability.

如图6所示,右末端壳体6外侧铰接有右转向节7,右转向节7上下两端设有销轴孔,右末端壳体6为中空结构,在右末端壳6上下两端设有右主销18,右转向节7绕右末端壳体 6转动。左末端壳体2外侧铰接有左转向节1,左转向节1上下两端设有销轴孔,左末端壳体 2为中空结构,在左末端壳6上下两端设有左主销17,左转向节1绕左末端壳体2转动。右转向节7和左转向节1之间设有转向横拉杆10,转向横拉杆10两端均设有销轴座腔,转向横拉杆10两端分别通过左销轴16和右销轴19于转向节1和转向节7铰接。车辆转向时,转向横拉杆10带动右转向节7绕着右末端壳体6转动,同时带动左转向节1绕着左末端壳体2 转动,右转向节7带动右侧车轮,左转向节1带动左侧车轮,实现整车的转向。在不转向的时候,右转向节7与右末端转向相当于固定连接,左转向节1与左末端传动相当于固定连接。As shown in Figure 6, the right end housing 6 is hinged with a right steering knuckle 7, the upper and lower ends of the right steering knuckle 7 are provided with pin holes, the right end housing 6 is a hollow structure, and the upper and lower ends of the right end housing 6 are provided with pin holes. Right kingpin 18 is arranged, and right steering knuckle 7 rotates around right end housing 6 . A left steering knuckle 1 is hinged on the outside of the left end shell 2, and the upper and lower ends of the left steering knuckle 1 are provided with pin shaft holes. The left steering knuckle 1 rotates around the left end housing 2 . A steering tie rod 10 is provided between the right steering knuckle 7 and the left steering knuckle 1, and both ends of the steering tie rod 10 are provided with a pin seat cavity. Steering knuckle 1 and steering knuckle 7 are hinged. When the vehicle turns, the steering tie rod 10 drives the right steering knuckle 7 to rotate around the right end housing 6, and simultaneously drives the left steering knuckle 1 to rotate around the left end housing 2. The right steering knuckle 7 drives the right wheel, and the left steering knuckle 1 Drive the left wheel to realize the steering of the whole vehicle. When not turning, the right steering knuckle 7 is equivalent to fixed connection with the right end steering, and the left steering knuckle 1 is equivalent to fixed connection with the left end transmission.

如图7所示,前桥壳体内装有主减速器和差速器总成、与主减速器和差速器总成连接的左内半轴25和右内半轴、与内半轴连接的左内万向节24和右内万向节,主减速器和差速器总成的机构以及其与半轴连接结构均为现有技术,在此不再赘述。动力经过驱动轴、主减速器和差速器总成传至左内半轴25和左内万向节24及左中半轴23,然后传至左外万向节22、左外半轴21(传动轴)传动左轮毂,右侧结构相同,驱动车轮旋转。左右外半轴与车轮连接机构为现有技术,在此不在赘述。As shown in Figure 7, the final drive and differential assembly are housed in the front axle housing, the left inner half shaft 25 connected with the final drive and differential assembly and the right inner half shaft, connected with the inner half shaft The left inner universal joint 24 and the right inner universal joint, the mechanism of the final drive and the differential assembly and its connecting structure with the half shaft are all prior art, so they will not be repeated here. The power is transmitted to the left inner half shaft 25, the left inner universal joint 24 and the left middle half shaft 23 through the drive shaft, the main reducer and the differential assembly, and then to the left outer universal joint 22 and the left outer half shaft 21 (Transmission shaft) drives the left wheel hub, and the right side has the same structure to drive the wheels to rotate. The connection mechanism between the left and right outer half shafts and the wheels is a prior art, and will not be described in detail here.

如图1-6所示,前桥壳体8与右末端壳体6的转动轴为右旋转轴15,右转向节7与右末端壳体6的转动轴为右主销18的主销轴线。前桥壳体8与左末端壳体2的转动轴为左旋转轴 20,左转向节1与左末端壳体2的转动轴为左主销17的主销轴线。旋转轴线和主销轴线交于外万向节中心,可避免转向、驱动和自动适应地面的过程中运动不干涉,也保证了在转向过程中动力不中断。As shown in Figure 1-6, the rotation axis of the front axle housing 8 and the right end housing 6 is the right rotation axis 15, and the rotation axis of the right steering knuckle 7 and the right end housing 6 is the kingpin axis of the right kingpin 18 . The axis of rotation of the front axle housing 8 and the left end housing 2 is the left axis of rotation 20, and the axis of rotation of the left knuckle 1 and the left end housing 2 is the kingpin axis of the left kingpin 17. The axis of rotation and the axis of the kingpin intersect at the center of the outer universal joint, which can avoid the non-interference of movement during the process of steering, driving and automatic adaptation to the ground, and also ensures that the power is not interrupted during the steering process.

Claims (1)

1. A steering drive axle with normal ground clearance is characterized in that: the steering drive axle comprises a front axle shell which is an integral axle shell; the middle of the front axle shell is hinged with the bracket through a swing shaft and a front axle bracket; the front axle bracket is fixedly connected with the bracket to ensure that the front axle shell can rotate around the machine body; the two ends of the front axle shell are connected with tail end assemblies, each tail end assembly comprises a tail end shell and a steering knuckle, and the tail end shell is connected with the tail end of the front axle shell; the tail end shell is hinged with the front axle shell, the steering knuckles are hinged with the tail end shell, pull rods are hinged between the tail end shells on two sides and the bracket, and steering tie rods are hinged between the steering knuckles on two sides;
the front axle housing is internally provided with a main speed reducer, a differential assembly, two side inner half shafts connected with the main speed reducer and the differential assembly, and two side middle half shafts connected with the two side inner half shafts through two side inner universal joints, wherein the two side middle half shafts are connected with two side outer half shafts through two side outer universal joints;
the front axle housing is horizontal;
the front axle shell, the tail end shell, the bracket and the pull rod are hinged to form a quadrilateral shape, so that the stability of the mechanism is ensured;
the front axle shell and tail end shell hinge axis and the steering knuckle and tail end shell hinge axis intersect at the center of the outer universal joint;
the half shafts on two sides are respectively divided into an inner half shaft, a middle half shaft and an outer half shaft, the inner half shaft and the middle half shaft are connected through an inner universal joint, and the middle half shaft and the outer half shaft are connected through an outer universal joint.
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CN107225913B (en) * 2017-05-31 2019-10-29 北京航空航天大学 A kind of steering and driving axle of high-clearance
CN114161879A (en) * 2020-09-10 2022-03-11 盐城市荣南机械制造有限公司 Front drive axle of silage harvester
CN116039290B (en) * 2022-12-14 2025-04-25 陕西汉德车桥有限公司 Off-road heavy-load front axle and manufacturing method thereof

Citations (4)

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Publication number Priority date Publication date Assignee Title
CN101508241A (en) * 2009-03-24 2009-08-19 颜志新 Steer drive front-axle
CN102765298A (en) * 2012-06-30 2012-11-07 南京创捷和信汽车零部件有限公司 Front steering axle assembly
CN104742965A (en) * 2015-02-05 2015-07-01 广西柳工机械股份有限公司 Land leveler swing front axle steering mechanism
DE102014202914A1 (en) * 2014-02-18 2015-08-20 Zf Friedrichshafen Ag Powered steerable axle

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101508241A (en) * 2009-03-24 2009-08-19 颜志新 Steer drive front-axle
CN102765298A (en) * 2012-06-30 2012-11-07 南京创捷和信汽车零部件有限公司 Front steering axle assembly
DE102014202914A1 (en) * 2014-02-18 2015-08-20 Zf Friedrichshafen Ag Powered steerable axle
CN104742965A (en) * 2015-02-05 2015-07-01 广西柳工机械股份有限公司 Land leveler swing front axle steering mechanism

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