초록 ▼

To avoid impacts on the first pass of the rolled product through a universal rolling mill the vertical rolls of the rolling mill can be provided with their own integral drive according to our invention. In an electrical drive for a vertical roll the vertical roll is the rotor of an electric motor wh

To avoid impacts on the first pass of the rolled product through a universal rolling mill the vertical rolls of the rolling mill can be provided with their own integral drive according to our invention. In an electrical drive for a vertical roll the vertical roll is the rotor of an electric motor while the stator is a circular collar on a nonrotatable supporting axle for the vertical roll. In a hydraulic drive for a vertical roll a hydraulic motor is either located in a housing side extension of the structural member supporting the vertical roll to drive it from the outside by spur wheel gearing or by a frictional drive or the hydraulic motor is mounted in the nonrotating supporting axle of the vertical roll and engages on an inner cogged drive ring on the vertical roll from the inside by spur gearing positioned on a transverse plane.

대표청구항 ▼

In a drive apparatus for driving a vertical roll of a universal rolling mill in at least one rotational direction in which said vertical roll is rotatably mounted on a supporting axle in a supporting member, the improvement wherein said drive apparatus comprises a hydraulic motor mounted in said sup

In a drive apparatus for driving a vertical roll of a universal rolling mill in at least one rotational direction in which said vertical roll is rotatably mounted on a supporting axle in a supporting member, the improvement wherein said drive apparatus comprises a hydraulic motor mounted in said supporting axle of said vertical roll whose driven spur gear drives a pivotally mounted intermediate spur gear which is engaged with said vertical roll provided with an interior cogged drive ring. A universal mill, comprising: a pair of horizontal rolls rotatably mounted in bearing blocks at least at one end of said pair; a hollow vertical roll of magnetizable steel at said end; a support member disposed between said blocks and holding said vertical roll for rotation about a vertical axis; a nonrotatable support shaft mounted in said support member and carrying said vertical roll for rotation thereof about said vertical axis, said support shaft being formed with a circular collar; an electric drive for said roll comprising: a stator winding formed on said circular collar and supplied with electric current through said nonrotatable support shaft, and annular secondary windings in said vertical roll and secured thereto, said secondary windings straddling said primary winding and said primary winding being received between said secondary windings, whereby said primary winding and said secondary windings coact to form an electric motor driving said vertical roll about said vertical axis; and a roll ring of a wear-resistant material on said vertical roll.