Disassembly and assembly technology for crankshaft bearing of large line engine

Abstract

The invention discloses a disassembly and assembly technology for a crankshaft bearing of a large line engine, mainly solves deficiencies or defects, like the problems that locating lips of the crankshaft bearing are not liable to align, the crankshaft bearing is liable to deviate and block, mounting is time-saving, and mounting quality is not liable to guarantee, of a crankshaft bearing disassembly and assembly method in the prior art, particularly provides the technology about how to change the crankshaft bearing under the situation that a crankshaft bearing disassembly tool cannot be mounted, and solves the problem that all the crankshaft bearings of the engines of the series cannot be changed in a site, and the situation that all the crankshaft bearings of the line engine are changed at a time is possible. The disassembly and assembly technology comprises a disassembly process and a mounting process. Through the technical scheme, the crankshaft bearing is changed under the situation that a crank journal is not provided with a lubricating oil channel, the defects of a conventional crankshaft bearing changing method are overcome, mounting efficiency and quality are improved, and the purposes of time-saving and effort-saving mounting, safety and economy are achieved.

Description

technical field [0001] The invention relates to a method for disassembling a crankshaft shell, in particular to a process for disassembling and assembling a crankshaft bush of a large in-line engine. Background technique [0002] With the deepening of China's petroleum exploration and development, more large-scale natural gas engine compressor units have been introduced from abroad in the past ten years to meet the needs of natural gas processing and gathering and transportation in oil and gas fields; an oilfield company in Northwest China has successively introduced a series of natural gas engine compressors from abroad There are 7 sets of units in total. The overhaul of this type of natural gas engine is a very important link to manage and use the equipment well; the difficulty of on-site overhaul of this type of engine lies in the replacement of the crankshaft; One) The replacement of the crankshaft has always been a difficult problem for us. Because there is no lubricati...

AI Technical Summary

Problems solved by technology

[0003] The problem to be solved by the present invention is that in the actual operation process of the existing crank bearing disassembly method, the positioning lip of the crank bearing is not easy to align, and the bearing bearing is prone to offset and jamming, resulting in difficult installation, low installation quality, time-consuming, laborious, and labor-intensive. The problem of low efficiency and the replacement of crankshaft bushes when there is no lubricating oil passage in the crankshaft journal; solve the problem that the complete replacement of engine crankshaft bushes cannot be realized on site for this series of engines