Wheel digging front drive axle assembly with steering function

Abstract

The utility model discloses a wheel digging and steering front drive axle assembly, and aims to solve the problems that the radial thickness of a sun gear of an existing wheel digging and steering front drive axle assembly is small, and the sun gear is easy to crack and damage in the using process, so that the driving safety is influenced. A sun gear (4) comprises a sun gear (5) and a bearing position (3), the bearing position (3) is arranged at the outward end of the sun gear (5), the sun gear (5) and the bearing position (3) are connected into a whole in the axial direction, the axial section of the sun gear (5) and the bearing position (3) is in a T shape, and the bearing position (3) of the sun gear (4) is connected with an end cover (1) on a hub reduction gear (2) through a bearing.

Description

Technical Field

[0001] The utility model relates to a driving axle assembly, in particular to a front driving axle assembly of a wheeled excavator composed of a wheel side reducer, a main reducer, a steering knuckle, a differential, a half shaft, a steering support knuckle and a bridge housing. Background Art

[0002] At present, such a front driving axle assembly of a wheeled excavator is disclosed in the market. Its structural characteristics are as follows: it is composed of a wheel side reducer, a main reducer, a steering knuckle, a differential, an inner half shaft, an outer half shaft, a steering support knuckle and a bridge housing. The main reducer is arranged in the middle of the bridge housing. One ends of two steering support knuckles are respectively connected to the main reducer through the bridge housing to form a whole. The other ends of the two steering support knuckles are movably connected to the wheel side reducer through the steering knuckle. The differential arranged in the bridge housing is in transmission connection with the gearbox through the main reducer. The inner half shaft gear on the differential is in transmission connection with one end of the inner half shaft also arranged in the bridge housing. The other end of the inner half shaft is in transmission connection with one end of the steering knuckle. The other end of the steering knuckle is in transmission connection with the sun gear on the wheel side reducer through the outer half shaft. Therefore, the radial thickness of the sun gear is small, and during use, the sun gear is easily cracked and damaged, thus affecting driving safety. Summary of the Invention

[0003] The purpose of the utility model is to provide a front driving axle assembly of a wheeled excavator that is not prone to cracking and damage of the sun gear and ensures driving safety.

[0004] To achieve the above purpose, a front driving axle assembly of a wheeled excavator with steering of the utility model is composed of a wheel side reducer, a main reducer, a steering knuckle, a differential, an inner half shaft, an outer half shaft, a steering support knuckle and a bridge housing. The main reducer is arranged in the middle of the bridge housing. One ends of two steering support knuckles are respectively connected to the main reducer through the bridge housing to form a whole. The other ends of the two steering support knuckles are movably connected to the wheel side reducer through the steering knuckle. The differential arranged in the bridge housing is in transmission connection with the gearbox through the main reducer. The inner half shaft gear on the differential is in transmission connection with one end of the inner half shaft also arranged in the bridge housing. The other end of the inner half shaft is in transmission connection with one end of the steering knuckle. The other end of the steering knuckle is in transmission connection with the sun gear on the wheel side reducer through the outer half shaft. The sun gear includes a sun gear and a bearing position. The bearing position is arranged at the outer end of the sun gear, so that the sun gear and the bearing position are axially connected into a whole and form a T-shaped axial section. The bearing position of the sun gear is connected to the end cover on the wheel side reducer through a bearing.

[0005] The sun gear is connected to the outer half shaft through a spline. Stoppers are respectively arranged at both ends of the internal spline hole of the sun gear, which is convenient to fix the sun gear on the outer half shaft through a locking screw and a gasket. An oil inlet is arranged on the end face where the sun gear contacts the outer half shaft.

[0006] A stop is provided on the external spline at one end of the outer half shaft that can be connected to the sun gear to facilitate blocking the sun gear.

[0007] An inner hole for placing a bearing is provided on the end cover.

[0008] The axis of the sun gear and the axis of the bearing position are on the same straight line.

[0009] After adopting this structure, since the sun gear includes a sun gear and a bearing position, and the bearing position is arranged at the outer end of the sun gear, the sun gear and the bearing position are axially connected into a whole, increasing the axial thickness of the sun gear. Also, since the bearing position of the sun gear is connected to the end cover on the wheel side reducer through a bearing. Thus, the purpose of not easily cracking and damaging the sun gear and ensuring driving safety is achieved. Description of the Drawings

[0010] The following further details the present utility model in conjunction with the drawings and embodiments.

[0011] Att Figure 1 is the main sectional view schematic diagram of a front drive axle assembly with steering for a wheeled excavator of the present utility model.

[0012] Att Figure 2 is the three-dimensional schematic diagram of the sun gear of a front drive axle assembly with steering for a wheeled excavator of the present utility model.

[0013] In the figure: 1. End cover 2. Wheel side reducer 3. Bearing position 4. Sun gear 5. Sun gear 6. Outer half shaft 7. Steering knuckle 8. Inner half shaft 9. Axle housing 10. Gasket 11. Locking screw 12. Oil inlet. Detailed Embodiment

[0014] Att Figure 1 、Att Figure 2The front drive axle assembly with steering of the utility model shown is composed of a wheel side reducer 2, a main reducer, a steering knuckle 7, a differential, an inner half shaft 8, an outer half shaft 6, a steering support joint and a bridge housing 9. The main reducer is arranged in the middle of the bridge housing 9. One ends of two steering support joints are respectively connected to the main reducer through the bridge housing 9 to form a whole. The other ends of the two steering support joints are movably connected to the wheel side reducer 2 through the steering knuckle 7. The differential arranged in the bridge housing 9 is in transmission connection with the gearbox through the main reducer. The inner half shaft gear on the differential is in transmission connection with one end of the inner half shaft 8 also arranged in the bridge housing 9. The other end of the inner half shaft 8 is in transmission connection with one end of the steering knuckle 7. The other end of the steering knuckle 7 is in transmission connection with the sun gear 4 on the wheel side reducer 1 through the outer half shaft 6. The sun gear 4 includes a sun gear 5 and a bearing position 3. The bearing position 3 is arranged at the outer end of the sun gear 5, so that the sun gear 5 and the bearing position 3 are axially connected into a whole and form a T-shaped axial section. Preferably, the axial length of the sun gear 5 and the bearing position 3 is 120-150 mm, and the tooth profile length is 45-70 mm. The bearing position 3 of the sun gear 4 is connected to the end cover 1 on the wheel side reducer 2 through a bearing. The sun gear 4 is connected to the outer half shaft 6 through a spline. Stoppers are respectively arranged at both ends of the inner spline hole of the sun gear 4, so as to fix the sun gear 4 on the outer half shaft 6 through a locking screw 11 and a gasket 10. An oil inlet 12 is arranged on the end face of the sun gear 4 in contact with the outer half shaft 6. A stopper for blocking the sun gear 4 is arranged on the outer spline at one end of the outer half shaft 6 capable of being connected to the sun gear 4. An inner hole for placing a bearing is arranged on the end cover 1. The axis of the sun gear 5 and the axis of the bearing position 3 are on the same straight line.

Claims

1. A front drive axle assembly with wheel excavation and steering, which is composed of a wheel-side reducer, a main reducer, a steering knuckle, a differential, an inner half shaft, an outer half shaft, a steering support knuckle and a bridge housing, wherein the main reducer is arranged in the middle of the bridge housing, one end of two steering support knuckles are respectively connected to the main reducer through the bridge housing to form a whole, the other ends of the two steering support knuckles are movably connected to the wheel-side reducer through the steering knuckle, the differential arranged in the bridge housing is connected to the gearbox through the main reducer, the inner half shaft gear on the differential is connected to one end of the inner half shaft also arranged in the bridge housing, the other end of the inner half shaft is connected to one end of the steering knuckle, and the other end of the steering knuckle is connected to the sun gear on the wheel-side reducer through the outer half shaft, characterized in that: The sun gear (4) includes a sun gear (5) and a bearing position (3). The bearing position (3) is arranged at the outer end of the sun gear (5), so that the sun gear (5) and the bearing position (3) are axially connected into a whole, and form a T-shaped axial section. The bearing position (3) of the sun gear (4) is connected to the end cover (1) on the rim reducer (2) through a bearing.

2. The front drive axle assembly with steering for a wheeled excavator according to claim 1, characterized in that: The sun gear (4) is connected to the outer half shaft (6) through a spline. At both ends of the internal spline hole of the sun gear (4), there are stop mouths, which are convenient for fixing the sun gear (4) on the outer half shaft (6) through a locking screw (11) and a gasket (10). An oil inlet (12) is arranged on the end face where the sun gear (4) contacts the outer half shaft (6).

3. The front drive axle assembly with steering for wheeled excavators according to claim 2, characterized in that: On one end of the outer spline of the outer half shaft (6) that can be connected to the sun gear (4), there is a stop mouth for blocking the sun gear (4).

4. A front drive axle assembly with steering for a wheeled excavator according to claim 1, characterized in that: An inner hole for placing a bearing is arranged on the end cover (1).

5. A front drive axle assembly with steering for a wheeled excavator, characterized in that: The axes of the sun gear (5) and the bearing position (3) are on the same straight line.

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