LIFTING DEVICE FOR BALL BARRIER NET

摘要

PURPOSE:To provide the elevating device for ball barrier net equipped with a means to absorb the stretch of a wire for lifting the net for each pole. CONSTITUTION:On the root side of respective poles 6a-6f, a first pulley 11 is provided for guiding a wire 4 for lifting the net to the head of the pole along the pole and at the head parts of respective poles 6a-6f, a second pulley 12 is provided to return the wire 4 for lifting the net downward from the head part of the pole and to guide it to the adjacent first pulley 11. Then, a capstan type winch 15 to drive the wire 4 for lifting the net hung over the respective poles 6a-6f and connected endless is fitted to one edge pole 6a. On the other hand, a tensioner 17 turnable around the horizontal axes of the other poles 6b-6f excepting for one edge pole 6a is provided at the wire 4 for lifting the net between the first pulley 11 and the second pulley 12 among the respective poles 6a-6f so as to control the tensile force through a guide pulley 31.