Front drive axle assembly of wheel excavator
By designing an outer half shaft structure including a gear shaft, a locking screw and an outer half shaft, the sun gear strength on the wheel side reducer is increased, and the problem of sun gear prone to cracking in the prior art is solved and driving safety is ensured.
Patent Information
- Application Number
- CN202421857551.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-02
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-08-02
AI Technical Summary
In the existing wheeled excavator front drive axle assembly, the radial thickness of the sun gear is relatively small, which can easily cause cracking and damage and affect driving safety.
An outer half shaft structure is designed, including a gear shaft, a locking screw and an outer half shaft. The gear shaft has no splined connection with one end of the gear shaft and one end of the outer half shaft. The locking screw is connected to the outer half shaft through the gear shaft, so that the gear on the gear shaft becomes the sun gear on the wheel side reducer, thereby increasing the strength of the sun gear.
By increasing the strength of the sun gear, the risk of cracking and damage of the sun gear is avoided and the safety of driving is ensured.
Smart Images
Figure CN222987881U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a drive axle assembly, in particular to a front drive 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 an axle housing. Background Art
[0002] At present, a front drive axle assembly of a wheeled excavator is disclosed on the market, and its structural features are as follows: it is composed of a wheel-side reducer, a main reducer, a steering knuckle, a differential, an outer half shaft, an inner half shaft, a steering support knuckle and a bridge housing, 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 transmission-connected to the gearbox through the main reducer, the inner half shaft gear on the differential is transmission-connected to one end of the inner half shaft also arranged in the bridge housing, the other end of the inner half shaft is transmission-connected to one end of the steering knuckle, the other end of the steering knuckle is transmission-connected to the wheel-side reducer through the outer half shaft structure, and the outward end of the outer half shaft structure is connected to the sun gear on the wheel-side reducer. Therefore, the radial thickness of the sun gear is small, and during use, it is easy to cause the sun gear to crack and be damaged, thereby affecting driving safety. Summary of the invention
[0003] The utility model aims to provide a front drive axle assembly of a wheeled excavator which is not easy to cause a sun wheel to crack and be damaged and ensures driving safety.
[0004] To achieve the above-mentioned purpose, the utility model provides a front drive axle assembly of a wheeled excavator, which is composed of a wheel-side reducer, a main reducer, a steering knuckle, a differential, an outer half shaft, an inner half shaft, a steering support knuckle and a bridge housing. 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 transmission connected to the gearbox through the main reducer, the inner half shaft gear on the differential is transmission connected to one end of the inner half shaft also arranged in the bridge housing, the other end of the inner half shaft is transmission connected to one end of the steering knuckle, and the other end of the steering knuckle is transmission connected to the wheel-side reducer through the outer half shaft structure, the outer half shaft structure includes a gear shaft, a locking screw and an outer half shaft, the end of the gear shaft without a gear is spline-connected to one end of the outer half shaft, and the locking screw passes through the gear shaft and is connected to the outer half shaft.
[0005] An external spline that can cooperate with the outer half shaft is arranged on the outer circle of the end of the gear shaft without the gear, and an axial through hole for the locking screw to pass through is also arranged on the gear shaft.
[0006] An axial blind hole is provided on one end face of the outer half shaft that can be connected to the gear shaft. An internal spline that can cooperate with the external spline on the gear shaft is provided on the inner surface of the blind hole. A threaded hole for facilitating connection with the locking screw is also provided at the bottom of the blind hole.
[0007] The axis of the gear shaft and the axis of the outer half shaft are on the same straight line.
[0008] After adopting this structure, the outer half shaft structure includes a gear shaft, a locking screw, and an outer half shaft. One end of the gear shaft without a gear is spline-connected to one end of the outer half shaft. The locking screw passes through the gear shaft and is connected to the outer half shaft, making the gear on the gear shaft become the sun gear on the wheel side reducer. Thus, the purpose of increasing the strength of the sun gear, not easily causing the sun gear to crack and damage, and ensuring driving safety is achieved. Brief Description of the Drawings
[0009] The following further describes the present utility model in detail with reference to the drawings and embodiments.
[0010] Appendix Figure 1 is a main sectional view schematic diagram of a front drive axle assembly of a wheeled excavator according to the present utility model.
[0011] In the figure: 1. wheel side reducer; 2. outer half shaft structure; 3. gear shaft; 4. locking screw; 5. outer half shaft; 6. steering knuckle; 7. inner half shaft; 8. axle housing. Specific Embodiments
[0012] Appendix Figure 1The utility model is shown as a front drive axle assembly of a wheeled excavator, which is composed of a wheel-side reducer 1, a main reducer, a steering knuckle 6, a differential, an outer half shaft 5, an inner half shaft 7, a steering support knuckle and a bridge housing 8. The main reducer is arranged in the middle of the bridge housing 8, one end of two steering support knuckles are respectively connected to the main reducer through the bridge housing 8 to form a whole, the other ends of the two steering support knuckles are movably connected to the wheel-side reducer 1 through the steering knuckle 6, the differential arranged in the bridge housing 8 is transmission-connected to the gearbox through the main reducer, the inner half shaft gear on the differential is transmission-connected to one end of the inner half shaft 7 also arranged in the bridge housing 8, the other end of the inner half shaft 7 is transmission-connected to one end of the steering knuckle 6, and the other end of the steering knuckle 6 is connected to the wheel-side reducer 1 through the outer half shaft structure 2 Transmission connection, the outer half-shaft structure 2 includes a gear shaft 3, a locking screw 4 and an outer half-shaft 5, the end of the gear shaft 3 without a gear is spline-connected to one end of the outer half-shaft 5, and the locking screw 4 passes through the gear shaft 3 and is connected to the outer half-shaft 5; an external spline that can cooperate with the outer half-shaft 5 is arranged on the outer circle of the end of the gear shaft 3 without a gear, and an axial through hole that is convenient for the locking screw 4 to pass through is also arranged on the gear shaft 3; an axial blind hole is arranged on one end face of the outer half-shaft 5 that can be connected to the gear shaft 3, an internal spline that can cooperate with the external spline on the gear shaft 3 is arranged on the inner surface of the blind hole, and a screw hole that is convenient for connection with the locking screw 4 is also arranged at the bottom of the blind hole; the axis of the gear shaft 3 and the axis of the outer half-shaft 5 are on the same straight line.
Claims
1. A front drive axle assembly of a wheeled excavator, which is composed of a wheel reducer, a main reducer, a steering knuckle, a differential, an outer half shaft, an inner 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 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 wheel reducer through the outer half shaft structure, characterized in that: The outer half-shaft structure (2) comprises a gear shaft (3), a locking screw (4) and an outer half-shaft (5); an end of the gear shaft (3) without a gear is spline-connected to one end of the outer half-shaft (5); and the locking screw (4) passes through the gear shaft (3) and is connected to the outer half-shaft (5).
2. A front drive axle assembly for a wheeled excavator according to claim 1, characterized in that: An external spline capable of cooperating with an outer half shaft (5) is provided on the outer circle of the end of the gear shaft (3) without a gear, and an axial through hole for facilitating the passage of a locking screw (4) is also provided on the gear shaft (3).
3. The front drive axle assembly of a wheeled excavator according to claim 1, characterized in that: An axial blind hole is provided on one end face of the outer half shaft (5) which can be connected to the gear shaft (3), an internal spline which can cooperate with the external spline on the gear shaft (3) is provided on the inner surface of the blind hole, and a screw hole which is convenient for connection with the locking screw (4) is also provided at the bottom of the blind hole.
4. The front drive axle assembly of a wheeled excavator according to claim 1, characterized in that: The axis of the gear shaft (3) and the axis of the outer half shaft (5) are in a straight line.