Attaching device

A device for the attachment of two units (17,18) provided for rotation in unison about an axis, said device comprising means for axial and radial attachment of the units (17,18) relative to each other,

• the attaching means comprising first engagement members (28,29) engageable with each other and provided in first and second units,
• said engagement members being removably engaged with each other by a relative radial movement between the units,
• the first and second units (17,18) further comprising second engagement members (32,33) removably engaged with each other and radially guiding the units relative to each other during axial movement of the units towards one another,
• the first engagement member (28) of the first unit (17) being arranged on an element (34) moveable in relation to a base part (21) of the first unit,
• the first and second units (17,18) comprising contact members (35,36) that are aligned with each other and contact each other when the first and second units are moved towards each other,
• a movement arrangement (40) operatively connected to the moveable element (34) and the base part (21) for moving the moveable element (34) relative to the base part (21) of the first unit (17) so as to actuate, by relative movement of the first engagement members (28,29), the units towards each other and bring their contact members (35,36) into contact, wherein
• the second engagement member (32) of the first unit (17) is provided on a moveable arrangement (39) which is moveable relative to the base part (21) of the first unit (17).