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Elastic integrated taper sleeve on film bearing with variable shrink range

A technology of oil film bearing and interference, which is applied in the direction of metal rolling, metal rolling racks, manufacturing tools, etc., can solve the problems of taper sleeve damage and failure to be solved, so as to prevent taper sleeve damage and maintain the design life Effect

Inactive Publication Date: 2006-03-22
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the problem of drogue damage has not been resolved

Method used

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  • Elastic integrated taper sleeve on film bearing with variable shrink range
  • Elastic integrated taper sleeve on film bearing with variable shrink range
  • Elastic integrated taper sleeve on film bearing with variable shrink range

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] Equal interference elastic combined taper sleeve: diameter of outer cylinder D=984.4mm, inner diameter of thick end of taper sleeve D=893.87mm, inner diameter of thin end of taper sleeve D=918.4mm, length of taper sleeve L=725mm, giving variable interference Measure some parameters of the elastic joint taper sleeve:

[0019] ①S 1 = S 2 =36mm, covering the edge height contact pressure concentrated area.

[0020] ②The outer boss of the sealing groove reduces the interference: Δδ 1 =Δδ 2 = 0.065 mm.

[0021] ③Reduce interference inside the sealing groove: Δδ 1 '=Δδ 2 '=0.04 mm.

[0022] ④Chamfer radius: R 1 =R 2 =0.3mm,

[0023] Chamfering position S 1 ', S 2 'Determine with the following formula (1), (2):

[0024] S 1 ′ = R 1 [ 1 - sin arctan ( Δ ...

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Abstract

An elastic conic sleeve with variable tightness for the oil-film bearing of rolling roller features that there are small tightness from the thin end of conic sleeve to the flange of sealing slot, variable tightness from small to big in local region of said sealing slot, big tightness in central long region, variable tightness from big to small until the sealing slot at another end, and small tightness from the thick end of conic sleeve to external side of sealing slot. Its advantages are low contact pressure, and no damage to conic sleeve.

Description

technical field [0001] The invention relates to the field of metallurgical machinery, in particular to an oil film bearing variable interference elastic combination taper sleeve used for roll necks of large strip rolling mills. Background technique [0002] In the back-up roll oil film bearing of a large strip four-high rolling mill, the latest combination method of the tapered sleeve and the roll neck is the Elastic Force Joint patented by Japan's Mitsubishi Heavy Industries, that is, interference fit, which is a keyless connection method. Its most prominent advantage is that it eliminates the rolling force fluctuation caused by the key connection between the roll neck and the taper sleeve, and improves the plate thickness accuracy. The elastic combination taper sleeve and roll neck are assembled and disassembled by hydraulic bulging, the purpose is to assemble quickly and save labor and reduce scratches on the contact surface. The pressure and action sequence of the two s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B31/07
Inventor 申光宪李慧剑
Owner YANSHAN UNIV