一种变速箱及工程机械
By using a limit ring and a limit tooth in the gearbox, the problem of gearbox wear caused by gear ring movement is solved, thus improving the reliability and stability of the gearbox, extending its service life, and reducing production costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 柳工柳州传动件有限公司
- Filing Date
- 2025-07-25
- Publication Date
- 2026-07-17
AI Technical Summary
In existing engineering machinery gearboxes, the gear ring moves under tilting conditions, causing wear on the inner wall of the gearbox. In addition, the limiting structure has high material requirements and is prone to cracking, affecting the reliability and stability of the gearbox.
The limit ring and the limit tooth are connected by an insertion. The combination of the limit ring and the retaining ring achieves reliable positioning of the toothed ring, avoiding direct contact and friction between the housing and the toothed ring. The limit ring is made of high-hardness steel with a surface hardness of 45HRC-58HRC.
It effectively avoids wear and tear on the gearbox, extends the service life of the gearbox, is suitable for complex working conditions, and reduces production costs and time.
Smart Images

Figure CN224515877U_ABST