Installation piece for supporting a roller in a roller stand

Patent metadata

Field	Value
Publication number	US-2015352611-A1
Application number	US-201314758365-A
Country	US
Kind code	A1
Filing date	Dec 18, 2013
Priority date	Dec 28, 2012
Publication date	Dec 10, 2015
Grant date	—

Abstract

An installation piece for supporting a roller in a roller stand of a roller frame. The installation piece includes a main bore for receiving a journal of the roller, an inlet for a lubricant, an outlet for the lubricant, and a pump device for pumping the lubricant leaving the installation piece through the outlet. The pump device has a housing, an inlet channel, and an outlet channel. The inlet channel communicates with the inlet and the outlet channel communicates with the outlet for the flow of the lubricant. The pump device is driven by the flow of the lubricant in the inlet. The housing of the pump device is equipped with a screw pump and a turbine, which is driven by the pressurized inflowing lubricant, in the inlet channel for driving the screw pump.

First claim

1 . An installation piece ( 100 ) for supporting a roll in a roll housing of a rolling stand with
a main bore ( 110 ) for holding a roll neck; an inlet ( 120 ) for lubricant ( 200 ); a return ( 140 ) for the lubricant ( 200 ); a pump device ( 130 ) for conveying the lubricant ( 200 ) flowing back out of the installation piece through the outlet; wherein the pump device comprises a housing ( 132 ), an inlet channel ( 134 ), and an outlet channel ( 136 ), wherein, with respect to the flow of the lubricant, the inlet channel communicates with the inlet and the outlet channel communicates with the outlet; and wherein the pump device ( 130 ) is driven by the flow of the lubricant ( 200 ) in the inlet ( 120 );
characterized in that
the pump device ( 130 ) comprises in its housing:
a screw pump ( 137 ) with a feed screw ( 138 ) in the outlet channel ( 136 ) for conveying the returning lubricant; and
a turbine ( 139 ) in the inlet channel ( 134 ) for driving the screw pump ( 137 ), the turbine being driven by the lubricant being supplied under pressure (p).

2 . Installation piece according to claim 1 , characterized in that the screw pump ( 137 ) is formed out of a tubular base body ( 137 - 1 ), which carries the feed screw ( 138 ) on its outside surface; in that
the housing ( 132 ) comprises a bore ( 133 ), in which the screw pump ( 137 ) is rotatably supported in bearings ( 137 - 2 ); wherein the space between the outside surface of the base body and the inside surface of the bore forms the outlet channel ( 136 ); wherein the feed screw ( 138 ) projects into the outlet channel ( 136 ) to convey the lubricant ( 200 ); and wherein the bearings ( 137 - 2 )—and thus also the screw pump ( 137 )—are positioned with the help of retaining means ( 132 a ) in the interior of the bore so that they cannot change position but are free to rotate.

3 . Installation piece ( 100 ) according to claim 2 , characterized in that the turns of the feed screw ( 138 ) are arranged at an acute angle α—in the flow direction of the lubricant in the return—to the tubular base body ( 137 - 1 ).

4 . Installation piece ( 100 ) according to claim 3 ,
characterized in that the retaining means ( 132 a ) are configured as spoked wheels or perforated plates, each of which extends in a plane perpendicular to the longitudinal axis (L) of the bore ( 133 ) in the housing ( 132 ); each of which is connected at its periphery to the housing ( 132 ) at the inside surface of the bore; and each of which, at the inside end, preferably coaxial to the bore, carries one of the bearings ( 137 - 2 ) for the screw pump ( 137 ).

5 . Installation piece ( 100 ) according to claim 3 or claim 4 , characterized in that the interior of the tubular base body ( 137 - 1 ) forms the inlet channel ( 134 ), in which the turbine ( 139 ), nonrotatably connected to the base body, is arranged.

6 . Installation piece ( 100 ) according to one of the preceding claims, characterized in that the ratio of the cross-sectional area (A 1 ) of the outlet channel to the cross-sectional area (A 2 ) of the inlet channel ( 134 ) is in the range of 2-10.

7 . Installation piece ( 100 ) according to one of the preceding claims, characterized in that
the outlet ( 140 ) on the outlet side ( 105 ) of the installation piece emerges from the installation piece in the form of a single bore, and the single inlet ( 120 ) is guided into the installation piece inside the bore for the return; and pump device ( 130 ) is mounted externally on the outlet side of the installation piece ( 100 ) in such a way that the inlet channel ( 134 ) in the pump device communicates with the inlet ( 120 ) of the installation piece, and the return channel ( 136 ) in the pump device ( 130 ) communicates with the outlet ( 140 ) of the installation piece.

8 . Installation piece ( 100 ) according to claim 7 , characterized in that
the bore for the outlet on the outlet side ( 105 ) of the installation piece ( 100 ) is positioned in relation to the main bore ( 110 ) which holds the roll neck in such a way that the upper vertex (OS) of the bore for the outlet ( 140 ) comprises a vertical distance s of 0<s<r 1 from the lower vertex (US) of the effective opening of the ring-shaped sealing lip arranged in the main bore, wherein r 1 is the radius of the bore for the outlet; wherein the upper vertex (OS) of the bore for the outlet lies above the lower vertex (US) of the effective opening of the sealing lip; and in that between the center of the main bore and the center of the bore for the outlet, there is a horizontal distance d 1 of R 1 <d 1 <R 1 +100 mm, wherein R 1 is the effective radius of the ring-shaped sealing lip.

9 . Installation piece ( 100 ) according to one of the preceding claims, characterized in that the diameters (2×r 1 ) of the bores for the outlet inside the installation piece and for the outlet channel ( 140 ) in the pump device ( 130 ) are in the range of 40-80 mm, and in that the bores are at least roughly aligned at their connecting point.

10 . Installation piece ( 100 ) according to one of the preceding claims, characterized in that the installation piece is an upper installation piece for supporting an upper back-up roll or a lower installation for supporting a lower back-up roll in the rolling stand.

11 . Installation piece ( 100 ) according to claim 10 , characterized in that the bottom surface of the upper installation piece is flat.

12 . Installation piece ( 100 ) according to claim 11 , characterized in that, for the distance d 2 between the lower vertex (UB) of the main bore ( 110 ) of the installation piece and the bottom surface of the upper installation piece, it is true that d 2 <20 mm, and preferably d 2 <10 mm.

Assignees

• Sms Group Gmbh

Inventors

• Grimmel Rüdiger
• Keller Karl
• Roeingh Konrad
• Alken Johannes
• Scheffe Kurt

Classifications

• B21B31/07 Primary

  Adaptation of roll {neck} bearings (bearings in general F16C) · CPC title

• B21B31/076 Primary

  Cooling; Lubricating roller bearings · CPC title

• F16C33/1065

  Grooves on a bearing surface for distributing or collecting the liquid · CPC title

• F16C13/02

  Bearings · CPC title

• F16C2322/12

  Rolling apparatus, e.g. rolling stands, rolls · CPC title