Back-up roll changing device

The utility model discloses a back-up roll changing device which comprises a back-up roll and a hydraulic cylinder, bearing seats are arranged on the two sides of the back-up roll, an inner rail is arranged on one side of the hydraulic cylinder, a piston rod of the hydraulic cylinder is connected wi...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	LI XINMING, MA JINCHUAN, MASU KATSUMITSU, WEI LONGFENG, ZHANG RUIYUN, XU HONGKUN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL PERFORMING OPERATIONS PUNCHING METAL ROLLING OF METAL TRANSPORTING
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Beschreibung
Zusammenfassung:	The utility model discloses a back-up roll changing device which comprises a back-up roll and a hydraulic cylinder, bearing seats are arranged on the two sides of the back-up roll, an inner rail is arranged on one side of the hydraulic cylinder, a piston rod of the hydraulic cylinder is connected with a driving block, a supporting plate is installed on the driving block in a sliding mode, and a cylindrical boss is installed on the supporting plate. An electromagnet is arranged in the cylindrical boss, stroke grooves are symmetrically formed in the two sides of the electromagnet, magnets are installed in the stroke grooves in a sliding mode, clamping blocks are connected to the magnets, and the magnets and the electromagnet are opposite in magnetic pole; a base is arranged on the bearing seat on one side of the supporting roller, a groove matched with the cylindrical boss is formed in the base, and limiting holes matched with the clamping blocks are formed in the two sides in the groove; the roller drawing dev