Spherical oil film bearing
First Claim
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1. An oil film bearing for rotatably supporting a roll in a rolling mill, said bearing comprising:
- a sleeve having an internal bore and an external spherical surface, said internal bore being configured and dimensioned for axial insertion onto a neck of said roll;
a bushing having an internal spherical surface configured and dimensioned to surround and rotatably contain the external spherical surface of said sleeve, said bushing being subdivided into multiple interconnected segments;
a chock for containing and radially supporting said interconnected bushing segments, the bushing segments and sleeve form an integral assembly receivable as a unit in the chock;
a pin that rotatably fixes said bushing in said chock;
means for supplying liquid lubricant between said internal surface and external surface that includes a network of passages in said chock and bushing communicating with elliptically rebored first recesses in said internal spherical surface at a location outside of a load zone of the bearing; and
an inboard end and an outboard end of said bushing segments being spaced from and thus not radially supported by said chock.
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Abstract
An oil film bearing for rotatably supporting a roll in a rolling mill is provide that includes a sleeve having an internal bore and an external spherical surface, the internal bore being configured and dimensioned for axial insertion onto a neck of the roll. A bushing includes an internal spherical surface configured and dimensioned to surround and rotatably contain the external spherical surface of the sleeve, the bushing being subdivided into multiple interconnected segments. A chock for containing and radially supporting the interconnected bushing segments.
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Citations
13 Claims
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1. An oil film bearing for rotatably supporting a roll in a rolling mill, said bearing comprising:
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a sleeve having an internal bore and an external spherical surface, said internal bore being configured and dimensioned for axial insertion onto a neck of said roll; a bushing having an internal spherical surface configured and dimensioned to surround and rotatably contain the external spherical surface of said sleeve, said bushing being subdivided into multiple interconnected segments; a chock for containing and radially supporting said interconnected bushing segments, the bushing segments and sleeve form an integral assembly receivable as a unit in the chock; a pin that rotatably fixes said bushing in said chock; means for supplying liquid lubricant between said internal surface and external surface that includes a network of passages in said chock and bushing communicating with elliptically rebored first recesses in said internal spherical surface at a location outside of a load zone of the bearing; and an inboard end and an outboard end of said bushing segments being spaced from and thus not radially supported by said chock. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An oil film bearing for rotatably supporting a roll in a rolling mill, said bearing comprising:
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a sleeve having an internal bore and an external spherical surface, said internal bore being configured and dimensioned for axial insertion onto a neck of said roll; a bushing having an internal spherical surface configured and dimensioned to surround and rotatably contain the external spherical surface of said sleeve, said bushing being subdivided into two interconnected segments; a chock for containing said sleeve surrounded by said interconnected bushing segments, said sleeve and said bushing segments comprising an integral assembly receivable as a unit in said chock; a pin that rotatably fixes said bushing in said chock; a means for supplying liquid lubricant between said internal surface and external surface that includes a network of passages in said chock and bushing communicating with elliptically rebored first recesses in said internal spherical surface at a location outside of a load zone of said bearing; and an inboard end and an outboard end of said bushing segments being spaced from and thus not radially supported by said chock.
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11. An oil film bearing for rotatably supporting a roll in a rolling mill, said bearing comprising:
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a sleeve having an internal bore and an external spherical surface, said internal bore being configured and dimensioned for axial insertion onto a neck of said roll; a bushing having a substantially continuous internal spherical surface configured and dimensioned to surround and rotatably contain the external spherical surface of said sleeve, said bushing being subdivided into multiple segments interconnected by tensioned fasteners; a chock for containing said sleeve surrounded by said interconnected bushing segments, the bushing segments and sleeve form an integral assembly receivable as unit in the chock; a pin that rotatably fixes said bushing in said chock; means for supplying liquid lubricant between said internal surface and external surface that includes a network of passages in said chock and bushing communicating with elliptically rebored first recesses in said internal spherical surface at a location outside of a load zone of the bearing; and an inboard end and an outboard end of said bushing segments being spaced from and thus not radially supported by said chock.
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12. An oil film bearing for rotatably supporting a roll in a rolling mill, said bearing comprising:
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a sleeve having an internal bore and external spherical surface, said internal bore being configured and dimensioned for axial insertion onto a neck of said roll; a bushing having an internal spherical surface configured and dimensioned to surround and rotatably contain the external spherical surface of said sleeve, said bushing being subdivided into multiple interconnected segments; a chock for containing said sleeve surrounded by said interconnected bushing segments, the bushing segments and sleeve form an integral assembly receivable as unit in the chock; a pin that rotatably fixes said bushing in said chock; means for supplying liquid lubricant to the interface between said external and internal spherical surfaces, said means comprising a network of passages in said chock and bushing communicating with elliptically bored recesses in said internal spherical surface at a location outside of the load zone of the bearing; and an inboard end and an outboard end of said bushing segments being spaced from and thus not radially supported by said chock.
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13. An oil film bearing for rotatably supporting a roll in a rolling mill, said bearing comprising:
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a sleeve having an internal bore and external spherical surface, said internal bore being configured and dimensioned for axial insertion onto a neck of said roll; a bushing having an internal spherical surface configured and dimensioned to surround and rotatably contain the external spherical surface of said sleeve, said bushing being subdivided into two interconnected segments; a chock for containing said sleeve surrounded by said interconnected bushing segments, said sleeve and said bushing segments comprising an integral assembly receivable unit in said chock, with an inboard end and an outboard end of said bushing segments being spaced from and thus not radially supported by said chock; a pin that rotatably fixes said bushing in said chock; and means for supplying liquid lubricant between said internal surface and external surface that includes a network of passages in said chock and bushing communicating with elliptically rebored first recesses in said internal spherical surface at a location outside of a load zone of the bearing.
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Specification