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Pretensioning type screw rod

A screw and pre-tensioning technology, applied in the direction of bearing components, shafts and bearings, rigid brackets of bearing components, etc., can solve problems such as temperature rise and loosening of nuts

Inactive Publication Date: 2014-05-07
JIANGSU CREATE PRECISION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is no fixing device between the bearing and the bearing, so the bearing is not completely fixed on the screw, and the balls of the bearing do not run on the normal bearing track, resulting in temperature rise during operation, and the screw begins to elongate, causing the nut to loosen. take off

Method used

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  • Pretensioning type screw rod

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Embodiment Construction

[0012] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0013] As shown in the figure: a pre-pull screw, including a screw 1, a bearing seat 2, a bearing 3, an outer spacer ring 4, an inner spacer ring 5, an outer precision nut 6, and an inner precision nut 7; the screw 1 A number of bearings 3 are sleeved on the outside, bearing housings 2 are provided on the outside of the bearings 3, an outer spacer ring 4 is provided on the outside of the bearing 3, an inner spacer ring 5 is provided on the inside of the bearing 3; an outer precision screw is provided on the outside of the outer spacer ring 4 The inside of the cap 6 and the inner spacer ring 5 is provided with an inner precision nut 7;

[0014] The other side is in contact with one end of the bearing 3; the other end of the bearing 3 is in contact with one side of the inner spacer ring 5; the other side of the spacer ring 5 is in contact with the inner precision nut 7....

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PUM

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Abstract

The invention relates to a pretensioning type screw rod, and belongs to the field of mechanical parts. The pretensioning type screw rod comprises a screw rod, a bearing block, bearings, an outer spacer ring and an inner spacer ring, wherein a plurality of bearings are sheathed outside the screw rod, the bearing block is arranged at the outer side of the bearing, the outer spacer ring is arranged outside the bearing, and the inner spacer ring is arranged inside the bearing. The pretensioning type screw rod can ensure that the bearing moves stably after ensuring that the screw rod is pretensioned, no deviation is caused, and the temperature rise phenomenon cannot happen.

Description

technical field [0001] The invention relates to a pre-pull screw, which belongs to the field of mechanical components. Background technique [0002] Bearings are arranged on the screw, and the bearings tend to shift during the pre-tensioning process of screw rotation. There is no fixing device between the bearing and the bearing, so the bearing is not completely fixed on the screw, and the balls of the bearing do not run on the normal bearing track, resulting in temperature rise during operation, and the screw begins to elongate, causing the nut to loosen. take off. Contents of the invention [0003] The present invention provides a kind of pre-pull type screw rod aiming at above-mentioned deficiency. [0004] The present invention adopts following technical scheme: [0005] The invention relates to a pre-pull type screw, which comprises a screw, a bearing seat, a bearing, an outer spacer ring, and an inner spacer ring; a plurality of bearings are sleeved on the outside...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C35/06
Inventor 许伟昕
Owner JIANGSU CREATE PRECISION TECH