Holding arrangement for rotary blade, comprises piston rod stationary joined to upper area of carrying frame

摘要

The rotary blade (1) is attached to a holding element (8) extending from the bottom of a vertically movable cylinder (5). The cylinder (5) is moved along a carrying frame (2,4) with a lateral guiding element (7). The piston rod (3) of the piston (11) accommodated inside the cylinder (5) and surrounded by a helical spring (9) is stationary joined to the upper segment of the carrying frame (2,4). The motion of the cylinder (5) is restricted by a stop element (10).