Protective cover and tower crane standard knot

The utility model relates to the field of engineering machinery, and discloses a protective cover and a tower crane standard knot. The protective cover is used for protecting a connecting sleeve (21) of a tower crane standard knot (20), the protective cover (10) comprises a cylinder body (11), the cylinder body (11) is provided with an open groove (111) extending in the axial direction of the cylinder body (11), one end of the cylinder body (11) is an opening (112), and the cylinder body (11) can be arranged outside the connecting sleeve (21) in a sleeving mode through the opening (112) and the open groove (111). According to the technical scheme, the special protective cover for the connecting sleeve is provided, and the protective cover can be used after being sleeved and is easy to operate, good in protective effect and attractive. 本实用新型涉及工程机械领域，公开了一种防护罩和塔机标准节。所述防护罩用于对塔机标准节(20)的连接套(21)进行防护，所述防护罩(10)包括筒体(11)，所述筒体(11)开设有沿所述筒体(11)的轴向延伸的开槽(111)，所述筒体(11)的一端为开口(112)，所述筒体(11)能够通过所述开口(112)和所述开槽(111)套设于所述连接套(21)外。本