Front drive axle assembly with steering function for wheel excavator
By designing an outer half shaft structure including a gear shaft, locking screw, anti-swelling cover, guide sleeve, positioning pin and outer half shaft in the front drive axle assembly of the wheel excavator, the problem of sun gear being prone to cracking and damage is solved, and driving safety and reliability are achieved.
Patent Information
- Application Number
- CN202421857549.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-02
- Publication Date
- 2025-05-16
- Estimated Expiration
- 2034-08-02
AI Technical Summary
During use, the sun gear is prone to cracking and damage in the front drive axle assembly of the existing wheel excavator, affecting driving safety.
An outer half shaft structure including a gear shaft, a locking screw, an anti-swelling cover, a guide sleeve, a positioning pin and an outer half shaft is designed. The bearing capacity and stability of the sun gear are enhanced through the movable connection between the gear shaft and the outer half shaft and the coordination of the positioning pin.
It effectively prevents cracking and damage of the sun gear and ensures driving safety and reliability.
Smart Images
Figure CN222875674U_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 consists 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 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. Therefore, the radial thickness of the sun gear is relatively 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] In order to achieve the above-mentioned purpose, the utility model provides a front drive axle assembly with steering for a wheeled excavator, 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. 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, and 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, and the inner half shaft gear on the differential is connected to the same half shaft gear. One end of the inner half shaft disposed in the bridge housing is transmission connected, 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 an outer half shaft structure. The outer half shaft structure includes a gear shaft, a locking screw, an anti-expansion cover, a guide sleeve, a locating pin and an outer half shaft. The end of the gear shaft without a gear passes through the anti-expansion cover and is movably connected to one end of the outer half shaft. One end of the gear shaft is also connected to the outer half shaft through a guide sleeve. The end of the anti-expansion cover facing the outer half shaft is connected to the end face of the outer half shaft through a locating pin, and the locking screw passes through the gear shaft and is connected to the outer half shaft.
[0005] At least two annular protrusions that can cooperate with the outer half shaft are evenly distributed on the end face of the gear shaft without the gear, and a hole that is convenient for placing the guide sleeve is axially arranged at the center position of the gear shaft end face within the at least two annular protrusions. An axial through hole that is convenient for the locking screw to pass through is also arranged on the gear shaft, and a shoulder that can press and fix the anti-expansion cover is arranged on the outer surface of the end of the gear shaft without the gear.
[0006] At least two annular grooves that can cooperate with at least two annular protrusions on the gear shaft are evenly distributed on one end face of the outer half shaft that can be connected to the gear shaft. A hole that is convenient for placing the guide sleeve is axially arranged at the center position of the end face of the outer half shaft in the at least two annular grooves. An axial screw hole is also arranged on one end face of the outer half shaft, and at least two pin holes that are convenient for placing the positioning pins are evenly distributed in the groove.
[0007] The gear shaft axis is in a straight line with the outer half shaft axis.
[0008] The anti-expansion cover is arranged in a tubular shape, and at least two pin holes which can cooperate with the positioning pins are evenly distributed on an end surface close to the outer semi-axis.
[0009] After adopting this structure, since the outer half-shaft structure includes a gear shaft, a locking screw, an anti-expansion cover, a guide sleeve, a positioning pin and an outer half-shaft, the end of the gear shaft without a gear passes through the anti-expansion cover and is movably connected to one end of the outer half-shaft, one end of the gear shaft is also connected to the outer half-shaft through the guide sleeve, the end of the anti-expansion cover facing the outer half-shaft is connected to the end face of the outer half-shaft through the positioning pin, and the locking screw passes through the gear shaft and is connected to the outer half-shaft. Thus, the sun gear is not likely to be cracked or damaged, and the driving safety is ensured. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments.
[0011] Attached Figure 1 The utility model is a main sectional schematic diagram of a drive axle assembly of a wheeled excavator.
[0012] Attached Figure 2 The utility model is an exploded schematic diagram of an outer half-axle structure of a drive axle assembly of a wheeled excavator.
[0013] 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. Bridge housing 9. Locating pin 10. Guide sleeve 11. Anti-expansion cover. DETAILED DESCRIPTION
[0014] Attached Figure 1 , Attachment Figure 2The utility model is a front drive axle assembly with steering for a wheeled excavator, which is composed of a wheel reducer 1, a main reducer, a steering knuckle 6, a differential, an inner half shaft 7, an outer half shaft 5, 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, and the other ends of the two steering support knuckles are movably connected to the wheel reducer 1 through the steering knuckle 6. The differential arranged in the bridge housing 8 is connected to the gearbox through the main reducer, and the inner half shaft gear on the differential is connected to the inner half shaft gear also arranged in the bridge housing 8. One end of the shaft 7 is transmission-connected, the other end of the inner half shaft 7 is transmission-connected with one end of the steering knuckle 6, and the other end of the steering knuckle 6 is transmission-connected with the wheel-side reducer 1 through the outer half shaft structure 2. The outer half shaft structure 2 includes a gear shaft 3, a locking screw 4, an anti-expansion cover 11, a guide sleeve 10, a positioning pin 9 and an outer half shaft 5. The end of the gear shaft 3 without a gear passes through the anti-expansion cover 11 for preventing deformation of at least two annular protrusions and is movably connected with one end of the outer half shaft 5. One end of the gear shaft 3 is also connected to the outer half shaft 5 through the guide sleeve 10 for guiding during assembly. The anti-expansion cover 11 faces one end of the outer half shaft 5. The end is connected to the end face of the outer half shaft 5 through a positioning pin 9 which plays a positioning role during assembly, and the locking screw 4 passes through the gear shaft 3 and is connected to the outer half shaft 5; at least two annular protrusions which can cooperate with the outer half shaft 5 are evenly distributed on the end face of the gear shaft 3 without a gear, and holes which are convenient for the placement of the guide sleeve 10 are axially arranged at the center position of the end face of the gear shaft 3 in the at least two annular protrusions, and an axial through hole which is convenient for the locking screw 4 to pass through is also arranged on the gear shaft 3, and a shoulder which can press and fix the anti-expansion cover 11 is arranged on the outer surface of the end of the gear shaft 3 without a gear; At least two annular grooves that can cooperate with at least two annular protrusions on the gear shaft 3 are evenly distributed on one end face of the outer half shaft 5, and a hole that is convenient for placing the guide sleeve 10 is axially arranged at the center position of the end face of the outer half shaft 5 in the at least two annular grooves. An axial screw hole is also arranged on one end face of the outer half shaft 5, and at least two pin holes that are convenient for placing the positioning pin 9 are evenly distributed in the groove; the axis of the gear shaft 3 and the axis of the outer half shaft 5 are on the same straight line; the anti-expansion cover 11 is set to be tubular, and at least two pin holes that can cooperate with the positioning pin 9 are evenly distributed on one end face close to the outer half shaft 5.
Claims
1. A front drive axle assembly with steering for a wheeled excavator, which is composed of a wheel 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 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), an anti-expansion cover (11), a guide sleeve (10), a positioning pin (9) and an outer half-shaft (5); an end of the gear shaft (3) without a gear passes through the anti-expansion cover (11) and is movably connected to one end of the outer half-shaft (5); one end of the gear shaft (3) is also connected to the outer half-shaft (5) through the guide sleeve (10); an end of the anti-expansion cover (11) facing the outer half-shaft (5) is connected to the end face of the outer half-shaft (5) through the positioning pin (9); 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 with steering for a wheeled excavator according to claim 1, characterized in that: At least two annular protrusions capable of cooperating with the outer half shaft (5) are evenly distributed on the end face of the gear shaft (3) without the gear, and a hole for facilitating the placement of the guide sleeve (10) is axially arranged at the center position of the end face of the gear shaft (3) within the at least two annular protrusions. An axial through hole for facilitating the passage of a locking screw (4) is also arranged on the gear shaft (3), and a shoulder capable of pressing and fixing the anti-expansion cover (11) is arranged on the outer surface of the end of the gear shaft (3) without the gear.
3. The front drive axle assembly with steering for a wheeled excavator according to claim 1, characterized in that: At least two annular grooves are evenly distributed on one end face of the outer half shaft (5) that can be connected to the gear shaft (3) and can cooperate with at least two annular protrusions on the gear shaft (3). A hole is axially arranged at the center position of the end face of the outer half shaft (5) in the at least two annular grooves for facilitating the placement of the guide sleeve (10). An axial screw hole is also arranged on one end face of the outer half shaft (5). At least two pin holes are evenly distributed in the groove for facilitating the placement of the positioning pin (9).
4. The front drive axle assembly with steering for 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.
5. The front drive axle assembly with steering for a wheeled excavator according to claim 1, characterized in that: The anti-expansion cover (11) is arranged in a tubular shape, and at least two pin holes capable of cooperating with the positioning pin (9) are evenly distributed on an end surface close to the outer half shaft (5).