Hollow air expansion shaft
The hollow air expansion shaft comprises a shaft sleeve, a fixing shaft, an air bag, an air nozzle and a plurality of expansion keys, the fixing shaft penetrates through the shaft sleeve, a through hole is formed in the fixing shaft in the axial direction, a positioning piece is arranged on the inne...
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The hollow air expansion shaft comprises a shaft sleeve, a fixing shaft, an air bag, an air nozzle and a plurality of expansion keys, the fixing shaft penetrates through the shaft sleeve, a through hole is formed in the fixing shaft in the axial direction, a positioning piece is arranged on the inner wall of the through hole, the air bag is arranged on the outer side of the fixing shaft in a sleeved mode, the air nozzle is connected with the fixing shaft, and an air channel is formed in the fixing shaft. One end of each expansion key abuts against the air bag, the other end of each expansion key penetrates through the shaft sleeve, and the expansion keys are arranged at intervals in the circumferential direction of the air bag. According to the hollow air expansion shaft, the through hole is formed in the fixed shaft, then the positioning piece is arranged on the inner wall of the through hole, and the positioning groove corresponding to the positioning piece is formed in the rotating shaft of equipment conne |
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