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Thrust bearing shoe sharpening machine and repair method

A technology for thrust bearings and repair methods, which is applied to machine tools, grinding machines, grinding/polishing equipment, etc., which are suitable for grinding workpiece planes, and can solve the problems of high bearing temperature, low utilization rate of pads, and babbitt alloy surfaces of pads. Adhering to flake grease and other problems, achieving consistent flatness, ensuring performance, smooth surface and consistent smoothness

Inactive Publication Date: 2012-08-22
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Pad-type thrust bearings are used in a wide range of applications. It mainly plays the role of preventing axial movement of rotating parts. For example, thrust bearing pads for high-pressure centrifugal pumps (phosphorus removal pumps), usually a set The bearing is composed of two sets of pads and a thrust disc, each set of pads has eight pieces, and the surface in contact with the oil film is coated with a layer of Babbitt alloy of about 1.2mm; when the thrust bearing runs for a period of time, due to various Due to the influence of other factors, there will be point-shaped contact bright spots (sintered hard spots), scratches, and flaky oil dirt on the smooth Babbitt alloy surface of the tile and the thrust plate. These problems will cause The temperature rise of the bearing may even lead to failures such as pump jumping and power tripping, and in serious cases, the tiles and thrust discs will be burned
[0003] In response to this situation, there is currently no tool for repairing thrust bearing pads. The usual practice is to replace new pads, but the replaced pads are only repaired piece by piece by scraping and grinding, and then It can be used again, and it is difficult to ensure that the thickness of the whole set of tiles is consistent and the flatness of each tile is consistent in such repairs, so the usage rate of the tiles after repair is very low, and the effect is also poor. scrapping

Method used

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  • Thrust bearing shoe sharpening machine and repair method
  • Thrust bearing shoe sharpening machine and repair method
  • Thrust bearing shoe sharpening machine and repair method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] ①. Install the thrust bearing pad grinding machine rotating mechanism 1 and pressing mechanism 2 in place;

[0071] ②. Check the condition of the Babbitt alloy surface of the tile to be ground;

[0072] ③. According to the condition of the babbitt alloy surface of the tile to be ground, select one side of the grinding plate 401 and the industrial scouring pad 4012 or spunlace non-woven fabric 4013 of the grinding plate as the grinding surface;

[0073] ④. Fix the selected grinding disc and the grinding disc facing up on the disc base 104 with the anti-rotation bolt assembly 402;

[0074]⑤. Insert the entire group of tiles to be ground into the tile holes 32 of the turntable 3 (note: the surface of the tiles to be ground babbitt faces downward);

[0075] ⑥. Lift up the transition sleeve 204 in the direction of arrow A in the figure;

[0076] ⑦. Put the turntable 3 in place on the disc base 104 according to the direction of the arrow B in the figure, put down the transi...

Embodiment 2

[0080] ①. Install the thrust bearing pad grinding machine rotating mechanism 1 and pressing mechanism 2 in place;

[0081] ②. In this embodiment, the scratches on the surface of the babbitt alloy to be ground are relatively deep (not exceeding 1 / 3 (0.4mm) of the babbitt alloy coating or the sintered hard spot bump is obvious;

[0082] ③. Select 180# industrial scouring pad with the abrasive side facing up and fix it on the disc base 104 with the anti-rotation bolt assembly 402 for physical repair;

[0083] ④. Insert the entire group of tiles to be ground into the tile hole 32 of the turntable 3 (note: the babbitt alloy face of the tiles faces downward);

[0084] ⑤. Lift up the transition sleeve 204 (according to the direction of arrow A in the figure);

[0085] ⑥. Put the turntable in place on the disc base 104, put down the transition sleeve 204, and put it on the turntable square insert 31;

[0086] ⑦. Increase the pressing force of the adjustment dial 3, and adjust the ad...

Embodiment 3

[0090] ①. Install the thrust bearing pad grinding machine rotating mechanism 1 and pressing mechanism 2 in place;

[0091] ②. In this embodiment, the scratches on the surface of the Babbitt alloy to be ground are relatively shallow or the sintered hard spots are not obvious;

[0092] ③. You can choose 320# or 600# industrial scouring pads with the abrasive surface facing up and fix them on the disc base 104 with the anti-rotation bolt assembly 402 for physical repair;

[0093] ④. Insert the entire group of tiles to be ground into the tile hole 32 of the turntable 3 (note: the babbitt alloy face of the tiles faces downward);

[0094] ⑤. Lift up the transition sleeve 204;

[0095] ⑥. Put the turntable 3 in place on the disc base 104, put down the transition sleeve 204, and insert it into the turntable square insert 31;

[0096] ⑦. Increase the pressing force of the adjustment dial 3, and adjust the adjustment cap 203 to the upper 3 to 4 grids;

[0097] ⑧. Turn the hand wheel ...

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Abstract

The invention relates to a thrust bearing shoe sharpening machine and a repair method, which mainly aim to overcome the defect of low shoe repair utilization rate in the repair of a conventional thrust bearing shoe. The sharpening machine comprises a shoe positioning mechanism, a sharpener positioning mechanism and a drive mechanism which are used for positioning the shoe and a selected sharpenerrespectively and providing a sharpening driving force. The repair method mainly comprises a shoe positioning step, a sharpened surface selection and positioning step, a sharpening step and the like.

Description

technical field [0001] The invention relates to a special tool and its usage method, in particular to a grinding machine for thrust bearing pads and a method for repairing pads with the grinding machine. Background technique [0002] Pad-type thrust bearings are used in a wide range of applications. It mainly plays the role of preventing axial movement of rotating parts. For example, thrust bearing pads for high-pressure centrifugal pumps (phosphorus removal pumps), usually a set The bearing is composed of two sets of pads and a thrust disc, each set of pads has eight pieces, and the surface in contact with the oil film is coated with a layer of Babbitt alloy of about 1.2mm; when the thrust bearing runs for a period of time, due to various Due to the influence of other factors, there will be point-shaped contact bright spots (sintered hard spots), scratches, and flaky oil dirt on the smooth Babbitt alloy surface of the tile and the thrust plate. These problems will cause Th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B24B7/10
Inventor 胡海勇
Owner BAOSHAN IRON & STEEL CO LTD
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