23-12-2015 дата публикации
Номер: CN0204905749U
Принадлежит:
The utility model discloses an extra -high voltage strain insulator shaft tower construction hole turns to card, including cross arm curb plate (4), fixed mounting has preceding cross arm (1) and back cross arm (2) on the cross arm curb plate, cross arm draw -in groove (9) is constituteed to preceding cross arm, back cross arm and cross arm curb plate, before being equipped with on the preceding cross arm screw (3), be equipped with back cross arm screw (6) on the back cross arm, cross arm curb plate one side one shot forming has atress curb plate (8), construction hole (7) have been seted up on the atress curb plate, on the atress curb plate fixedly connected with angle steel (5), cross arm behind the angle steel fixedly connected with. This construction hole turns to refined the forming of card adoption high strength aluminum alloy material, and under normal atmospheric temperature, its yield strength reaches 860Mpa, and specified mechanical load 15KN, proof load reach 30KN, and safety ...
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