Saw and anti-abrasion rotation shaft

• Main Authors: KONG LINGQIANG, ZUO FA, LI NA, HE AIGUO
• Format: Patent
• Language: English
• Published: 11.03.2015
• Subjects: BEARINGS; BLASTING; ELEMENTS OR CRANKSHAFT MECHANISMS; ENGINEERING ELEMENTS AND UNITS; FLEXIBLE SHAFTS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; ROTARY BODIES OTHER THAN GEARING ELEMENTS; SHAFTS; THERMAL INSULATION IN GENERAL; WEAPONS

The utility model discloses an anti-abrasion rotation shaft. The anti-abrasion rotation shaft comprises a rotation shaft body and a primary shaft sleeve, wherein the primary shaft sleeve sleeves outside the shaft neck of the rotation shaft body and is fixedly connected with the shaft neck in a detachable mode; because the shaft neck is externally sleeved by the primary shaft sleeve, and the shaft neck and the primary shaft sleeve are fixedly connected and are static relatively, so that when the relative rotation of the anti-abrasion rotation shaft and a shaft component is caused by the transmission of large torque or damage of the shaft component, and other reasons, the excircle surface of the primary shaft sleeve, which is in contact with the shaft type components, is abraded firstly because of friction generated by relative rotation. When the abrasion quantity of the primary shaft sleeve is relatively high, and the primary shaft sleeve cannot meet the operation requirement of the anti-abrasion rotation shaft, the precision of the anti-abrasion rotation shaft can be recovered as long as the primary shaft sleeve is replaced without repairing or replacing the rotation shaft body, so that the service life of the anti-abrasion rotation shaft is prolonged, and the maintenance cost of equipment is lowered. The utility model also discloses a saw comprising any type of the anti-abrasion rotation shaft.