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Processing method for four-piece unequal-diameter bearing body of large hydroelectric generating set

A technology of hydroelectric unit and processing method, which is applied in the field of radial bearing body processing, can solve the problems of long production cycle and high scrap rate, achieve high processing precision, significant effect, reduce processing workload and the effect of defective product risk

Active Publication Date: 2017-01-11
HARBIN ELECTRIC MASCH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the past, the processing method was to place the large-diameter two-lobed bearing body against each other for alignment, and the small-diameter two-lobed bearing body for processing after alignment, and then combined inspection and repeated repairs. The production cycle was long and the scrap rate was high.

Method used

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  • Processing method for four-piece unequal-diameter bearing body of large hydroelectric generating set
  • Processing method for four-piece unequal-diameter bearing body of large hydroelectric generating set
  • Processing method for four-piece unequal-diameter bearing body of large hydroelectric generating set

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Embodiment 1

[0070]Taking the four-lobe bearing body of a certain large-scale hydropower unit as an example to illustrate the process of applying the present invention to process: the weight of the bearing body is 7770Kg, the outer diameter is φ2950mm, the positive zero-degree orientation of the unequal-diameter bearing body is the major diameter, and the 45° orientation is the minor diameter. Adopt the present invention to process, process is as follows:

[0071] 1) The first scratch inspection, such as figure 1 As shown, check the machining allowance of each single lobe plane and circumference of the bearing body 1, and mark the flat line, round line, and closing hole line;

[0072] 2) Process the joint surface, refer to the marking inspection line, and according to the technical requirements, mill the joint surface of the four petals, and bore the joint surface to close the hole;

[0073] 3) For the first combination, combine the bearing body 1 according to the flat line and the round ...

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Abstract

The invention discloses a processing method for a four-piece unequal-diameter bearing body of a large hydroelectric generating set. The processing method comprises the following steps of: marking inspection, jointing surface processing, primary combination, rough turning, primary disassembly, car gasket assembly, secondary combination, secondary marking inspection, finish turning, detecting and secondary disassembly. In order to solve the technical limitation of four-piece unequal-diameter bearing body processing, a reasonable computing method is adopted, and a method of assembling a car gasket is adopted, so that the technical effects of simultaneously turning each piece of the four-piece bearing body are realized, processing workload and defective product risks are reduced, bearing body processing precision and efficiency are improved, and the processing method for the four-piece unequal-diameter bearing body of the large hydroelectric generating set is enriched. The processing method disclosed by the invention has the technical characteristics of being easy to popularize, high in processing precision, short in production period, relatively low in cost, low in rejection rate and remarkable in effect.

Description

Technical field: [0001] The invention relates to a processing method for a four-lobe unequal-diameter bearing body used in a large hydropower unit. Background technique: [0002] The bearing body of the hydroelectric unit is one of the core components of the unit. At present, with the continuous increase of the capacity of the hydroelectric unit, the design structure of the bearing body is becoming more and more complicated, and the processing difficulty is getting higher and higher. Especially after the birth of the four-lobe unequal-diameter bearing body structure, its processing has always been a difficult problem in the industry. In the past, the processing method was to place the large-diameter two-lobed bearing body against each other for alignment, and place the small-diameter two-lobed bearing body for alignment and processing, and then perform combined inspection and repeated repairs. The production cycle was long and the rejection rate was high. Invention content...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00
CPCB23P15/003
Inventor 杨思晋高建刚唐勇刘琦王蕾王守颂李剑波赵志军刘向海
Owner HARBIN ELECTRIC MASCH CO LTD
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