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公开(公告)号：EP3769914A1
公开(公告)日：2021-01-27
申请号：EP20194902.1
申请日：2017-06-01
申请人： Husqvarna AB
IPC分类号： B24B41/047 , B24B7/18 , B24B47/10
摘要： The present disclosure relates to a grinding head for a floor grinding machine for grinding floor surfaces of stone or stone-like material. Such a grinding head comprises a hollow grinding head casing enclosing a drive axle, at least two belt pulleys associated with a respective grinding disk, a belt 51 running over said belt pulleys and said drive axle, and a belt tensioner 4. The belt tensioner 4 comprises a tensioner pulley 41, displaceable by rotation about a setting axis 43 and spaced from the tensioner pulley 41 by a pulley lever 42, where the setting axis 43 is parallel with an axis of rotation of the grinding head. The casing further encloses a tensioner setting device, for setting a position of the pulley in said direction by application of a torque about the setting axis 43. The tensioner setting device is accessible from outside of the grinding head casing, such that the belt tensioner 4 can be adjusted while the grinding head is in an assembled state.
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公开(公告)号：EP3520961A1
公开(公告)日：2019-08-07
申请号：EP18248110.1
申请日：2017-06-01
申请人： HUSQVARNA AB
IPC分类号： B24B41/047 , B24B7/18 , B24B47/10
摘要： The present disclosure relates to a grinding head (1) for a floor grinding machine (100) for grinding floor surfaces of stone or stone-like material. The grinding head comprises a lower casing member (3), comprising a lower support (31), an upper casing member (2), comprising an upper cover (21), a first belt pulley (611), arranged on an axle extending substantially parallel with an axis of rotation of the grinding head (1), and a second belt pulley (8), spaced from the first belt pulley (611) in a direction perpendicular to the axis of rotation of the grinding head (1), and partially overlapping the first belt pulley (611), its associated axle and/or its associated bearing, as seen in a plane parallel with the lower support (31). The second belt pulley (8) comprises an edge recess (81), which is sized and adapted such that when the edge recess (81) is arranged with its opening towards the axis of rotation of the first belt pulley (611), the first belt pulley (611), its associated axle and/or its associated bearing is free from said overlap.
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