一种电驱桥中间轴
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YIFEI XINNENG (SUZHOU) GEAR MANUFACTURING CO LTD
- Filing Date
- 2025-08-28
- Publication Date
- 2026-07-17
AI Technical Summary
The gears on the intermediate shaft of the existing electric drive bridge have excessive assembly errors, resulting in a low yield rate and making it difficult to meet design requirements.
The second gear is replaced by a molded part and transmission gear integrally formed on the shaft. The gear and shaft are connected by a key to achieve precise coplanarity control. The positioning is combined with bearings and retaining rings to reduce errors.
Effective control of the coplanarity error between the transmission gear and the shaft gear is within 0.03mm, thereby improving the yield of intermediate shafts.
Smart Images
Figure CN224510757U_ABST
Abstract
Claims
1. An intermediate shaft for an electric drive bridge, comprising a shaft body (1) and a first gear (2), characterized in that: The shaft (1) has an integrally formed forming part (4) for machining transmission teeth (5). The forming part (4) is formed by protruding outward from the circumference of the shaft (1). The coplanarity error between the transmission teeth (5) and the teeth of the shaft (1) is less than or equal to 0.03 mm.
2. The electric drive axle countershaft of claim 1, wherein: The shaft (1) is provided with a first keyway, and a first key (6) is provided in the first keyway. The first gear (2) is connected to the shaft (1) by the first key (6).
3. The electric drive axle countershaft of claim 2, wherein: The shaft (1) is provided with a second keyway, and a second key (7) is provided in the second keyway. The first gear (2) is connected to the shaft (1) by the second key (7).
4. The electric drive axle countershaft of claim 1, wherein: The shaft (1) is provided with a first bearing (8) at one end near the first gear (2).
5. The electric drive axle countershaft of claim 1, wherein: The shaft (1) is provided with a second bearing (9) at the end away from the first gear (2).
6. The electric drive axle countershaft of claim 1, wherein: The coplanarity error between the teeth of the first gear (2) and the shaft (1) is less than or equal to 0.1 mm.
7. The electric drive axle countershaft of claim 4, wherein: The shaft (1) is provided with a bearing cover (10) at one end near the first bearing (8), and the bearing cover (10) is disposed on the end face of the shaft (1).
8. The electric drive axle countershaft of claim 7, wherein: The bearing cap (10) is provided with a stop pin (11) on the side facing the shaft (1), and a positioning hole is provided on the end face of the shaft (1) for the stop pin (11) to be inserted.
9. The electric drive axle countershaft of claim 1, wherein: The shaft (1) is provided with a mounting groove, and a retaining ring (12) is provided in the mounting groove.