B - Operations – Transporting – 21 – B
Patent
B - Operations, Transporting
21
B
B21B 39/10 (2006.01) B21B 31/10 (2006.01)
Patent
CA 2269009
Device to remove working rolls in a four-high rolling stand comprising upper working roll (11a) and lower working roll (11b), associated with respective supporting chocks (12a, 12b), and relative back-up rolls, upper (13a) and lower (13b), associated with respective supporting chocks (14a, 14b), wherein at least the chucks (14b) of the lower back-up roll (13b) laterally and partly contain the chocks (12b) of the lower working roll (11b), the device comprising a pair of sliding rails (15) mounted on board the chocks (14b) of the lower back-up roll (13b) and movable vertically with respect thereto, the rails (15) cooperating with lifting means and including a first lowered, or inactive position, and a second raised, or working position, associated with the chocks (12b) of the lower working roll (11b), the chocks (12b) being-associated at the lower part with sliding means (21) suitable to cooperate with the rails (15) located in the raised position, the means to lift the rails (15) consisting of actuators (23) arranged in cooperation with the lower plane of the rolling stand (10) and contained inside the space of the chocks (14b) of the lower back-up roll (13b), the actuators (23) being connected to the relative rails (15) by means of respective extension rods (16) arranged an the axial extension of the actuators (23).
Danieli & C. Officine Meccaniche Spa
Goudreau Gage Dubuc
LandOfFree
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