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Bush turning tool for overhauling power generator bearing bush in large thermal power plant

A technology for thermal power plants and generators, applied in the direction of load suspension components, transportation and packaging, etc., can solve problems such as easy damage to the main shaft or bearing bush, narrow working place, secondary damage, etc., to improve maintenance quality and safety risks Good and adaptable effect

Pending Publication Date: 2019-12-10
HUANENG NANJING JINLING POWER GENERATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem of the present invention: during the overhaul process of the power plant when the generator is shut down, turning over tiles is a hard and difficult job, especially for minor repairs, because the main shaft can only be lifted for a small distance, the workpiece is heavy, and the working place is narrow, especially the traditional Method Use a sling or a wire rope to turn the bearing bush out of the bearing bush socket, the operation is more difficult, and it is easy to damage the main shaft or the bearing bush, causing secondary damage

Method used

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  • Bush turning tool for overhauling power generator bearing bush in large thermal power plant
  • Bush turning tool for overhauling power generator bearing bush in large thermal power plant
  • Bush turning tool for overhauling power generator bearing bush in large thermal power plant

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Experimental program
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Effect test

Embodiment 1

[0033] A tool for overhauling generator bearing bushes in a large-scale thermal power plant, including a semicircular frame 1, on which three sets of bearings are arranged; the bearings include rollers 2, dust-proof deep groove ball bearings 3, and roller shafts 4; The roller 2 is connected to the roller shaft 4 through a bearing 3, and the two ends of the roller shaft are fixed on the frame by set screws 7; the center of the roller shaft 4 is fixedly connected to the top of the frame by a nut 5 and a hex head bolt 6 A retaining ring 8 for the shaft is provided between the bearing and the set screw 7, and a retaining ring for the hole is provided between the roller 2 passing through the bearing 3 .

[0034] The bottom of the frame is provided with a supporting sleeve, which is used for fixing the bolts at the bottom of the frame.

[0035] A base plate 11 is provided at the bottom of the frame, and an ear plate 12 is provided on the base plate; a hoisting hole 13 is provided on...

Embodiment 2

[0039] The use process of the brick-turning tool of embodiment 1 is:

[0040] 1. Lift the tile-turning tool firmly and smoothly to the upper half of the original generator bearing tile and place it in place. When falling down, try to make the connecting hole of the fixed bottom plate align with the corresponding screw hole on the lower half of the tile. The fixing bolts and supporting sleeves of the random packing parts (note: do not tighten them temporarily), move the fixed bottom plate a little to keep the tile-turning tool and the center of the tile basically on the same axis, and tighten the fixing bolts after the position adjustment is completed.

[0041] 2. Adjust the three pairs of rollers on the tile-turning tool so that they are tightly attached to the generator rotor, and then lightly tap with a copper rod to check the tightness. After the roller and the rotor are tightly attached, fasten the roller with a wrench, so as to lift the lower half of the tile moderately. ...

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Abstract

The invention discloses a bush turning tool for overhauling a power generator bearing bush in a large thermal power plant. The bush turning tool is a special overhauling tool used in the overhauling work of a turbine-generator in the large thermal power plant. The bush turning tool is composed of a semicircular frame and three bearings. The semicircular frame is fixed to the lower half bearing bush, and the bearing bush is turned out through the three rolling bearings. By means of the bush turning tool, the overhauling quality can be greatly improved, the bush turning tool is more rapid and efficient, the overhauling period is shortened, the labor intensity of workers is reduced, a traditional method for hoisting and turning the lower half bearing bush of a power generator through a steelwire rope is thoroughly abandoned, the safety in overhauling work is greatly improved, and the abrasion caused to the bearing bush in the turning process of the bearing bush is avoided.

Description

Technical field: [0001] The invention relates to the field of maintenance of thermal power plant equipment, in particular to a large-scale thermal power plant tool for overturning the bearing bush of a generator for maintenance. Background technique: [0002] At present, the common method of overturning bearing bushes in power plants is as follows: prepare the hydraulic oil jack and shaft lifting tool, two sets of dial indicators, set up the oil jack and dial indicators, and lift the large shaft by 0.50mm to see how much the rotor deviates from left to right. Use a sling to fasten the left side of the bearing bush (the side of the bearing bush turned out) and start turning the bush, pull it up evenly to the right, gradually turn the lower half of the bearing bush, prepare a small piece of thin wood, turn the bearing bush up from the left, and pad the right side of the wooden board to prevent the bearing bush Slide from the right. [0003] There are many defects and inconven...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66C1/10B66C13/08
CPCB66C1/10B66C13/08
Inventor 周志龙崔玉玲麦军马扬魏龙
Owner HUANENG NANJING JINLING POWER GENERATION
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