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A kind of surface reprocessing flame retardant bushing and its processing technology

A processing technology and reprocessing technology, applied in the direction of shaft, coating, bearing, etc., can solve the problems of mechanical expansion and tightening force not meeting the required tightening force, increased wear speed, poor flame retardancy of the bushing, etc. Extended service life, reduced temperature rise, increased strength effects

Active Publication Date: 2021-01-26
南通通途机电制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, the mechanical expansion and tightening force cannot meet the required tightening force, and there is a fit gap between the shaft sleeve and the main shaft, which causes the wear of the shaft sleeve, and in the actual use process, it is easy to generate debris due to wear This will further lead to greater friction, resulting in faster and faster wear speed. At the same time, the flame retardancy of the general shaft sleeve is poor, and the shaft sleeve is prone to heat during friction. Under high temperature conditions, the wear speed will further increase

Method used

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  • A kind of surface reprocessing flame retardant bushing and its processing technology
  • A kind of surface reprocessing flame retardant bushing and its processing technology
  • A kind of surface reprocessing flame retardant bushing and its processing technology

Examples

Experimental program
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Effect test

Embodiment 1

[0048] see Figure 1-3 , a surface reprocessed flame-retardant bushing, including a bushing body 1, the inner wall of the bushing body 1 is provided with a multi-gap flame-retardant layer, and the multi-gap flame-retardant layer includes two end strengthening layers 21 and a semi-permeable heat-resistant layer 22 and a plurality of evenly distributed main embedded support points 23, the two end reinforcement layers 21 are respectively fixedly connected to the inner walls of the mouth on the left and right sides of the shaft sleeve body 1, and the plurality of main embedded support points 23 are all connected to the shaft sleeve body 1 The inner wall is fixedly connected, and a plurality of main inner support points 23 are located between the two end reinforcement layers 21, between the main inner support points 23 and the end reinforcement layers 21 and every two main inner support points 23 Flame-retardant gaps are formed between them, and the semi-permeable heat-resistant la...

Embodiment 2

[0057] see Figure 4-5 , the inner wall of the sleeve body 1 is provided with a plurality of transparent flame-retardant layers, and a blank section 31 is formed between every two transparent flame-retardant layers, and the force generated during use can be effectively released to the blank section 31 through the blank section 31 At the same time, part of the heat generated can also stay in this part, so that the heat at the fully transparent heat-resistant layer 32 is less, and the temperature of this part is reduced, thereby effectively prolonging the wear time of the transparent flame-retardant layer and improving the flame-retardant ability The transparent flame-retardant layer includes a fully transparent heat-resistant layer 32 and a secondary embedded support point 33 that are both fixedly connected to the inner wall of the sleeve body 1, and the secondary embedded support point 33 is embedded in the fully transparent heat-resistant layer 32, and the secondary internal ...

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Abstract

The invention discloses a surface-reprocessed flame-retardant bushing and its processing technology, belonging to the field of flame-retardant bushings. A surface-layer reprocessed flame-retardant bushing and its processing technology can be set by setting multiple gaps for flame-retardant layers. On the one hand, it can prolong the wear time of the inner wall of the mouth and prolong the service life. On the other hand, it can effectively reduce the temperature increase caused by the heat accumulation on the inner wall of the shaft sleeve body, so that the phenomenon of accelerated wear occurs, and the blank section can be effectively released to the blank section. The force generated during use, and part of the heat generated at the same time can also stay in this part, so that the heat at the fully transparent heat-resistant layer is less, reducing the temperature of this part, thereby effectively prolonging the wear of the transparent flame-retardant layer. At the same time, the inner wall of the bushing body can be completely communicated with the outside world through the fully transparent heat-resistant layer, which can further effectively evacuate the heat generated by friction on the inner wall of the bushing body during use, thereby improving the flame retardancy.

Description

technical field [0001] The invention relates to the field of flame-retardant bushings, in particular to a flame-retardant bushing after surface layer reprocessing and its processing technology. Background technique [0002] The shaft sleeve is a cylindrical mechanical part that is sleeved on the rotating shaft and is an integral part of the sliding bearing. Generally speaking, the shaft sleeve and the bearing seat adopt an interference fit, while the shaft sleeve adopts a clearance fit. [0003] What the bushing and bearing have in common is that both carry the load of the shaft. The difference between the two is that the shaft sleeve is an integral structure, and the relative movement between the shaft and the shaft sleeve occurs when rotating; while the bearing is split, and the inner and outer rings of the bearing itself move relative to each other when rotating. But in essence, the shaft sleeve is actually a kind of sliding bearing. Powder metallurgy is currently the m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16C17/24F16C33/04F16C33/00
CPCF16C17/243F16C17/246F16C33/00F16C33/04F16C2220/40F16C2220/62F16C2223/06F16C2223/30F16C2226/38F16C2300/54
Inventor 顾斌
Owner 南通通途机电制造有限公司
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