An assembly tooling for a low-pressure turbine of an engine

Abstract

The invention provides an assembly tool for a low-pressure turbine of an engine, which includes a positioning guide tool and a traction tool. The positioning guide tool is coaxially connected with the low-pressure turbine shaft. The shaft sleeve extends to the outside of the fan rotor. During the assembly process of the low-pressure turbine, torque is applied to the traction shaft externally. The traction shaft rotates synchronously with the connecting shaft sleeve. During the rotation of the fan rotor, the traction shaft is driven axially through threads. Move, so that the low-pressure turbine shaft has dual forces of rotation and axial movement, so that the cylindrical rollers of the bearings on the low-pressure turbine shaft are gradually fitted into the outer ring of the bearing during rotation, which solves the problem of cylindrical rollers in the existing assembly process. The problem of mechanical collision with the outer ring of the bearing.

Description

technical field [0001] The invention relates to the technical field of engine assembly, in particular to an assembly tool for an engine low-pressure turbine. Background technique [0002] The low-pressure turbine unit of the engine is a unit structure. The bearing inner ring, cage and bearing cylindrical roller of the four-point bearing of the engine are assembled on the low-pressure turbine shaft, which is a part of the low-pressure turbine unit; the bearing outer ring is assembled on the high-pressure turbine rotor. On the rear journal of the engine, it is part of the core engine unit. During assembly, each unit body is assembled horizontally, the low-pressure turbine unit body is horizontally assembled to the core machine unit body, the bearing cylindrical roller enters the bearing outer ring horizontally, and the gap between the bearing cylindrical roller outer diameter and the bearing inner ring is only 0.07mm. The length of the low-pressure turbine unit body is 1700mm...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problem that the bearings are easily damaged during the installation process of the low-pressure turbine and the core engine of the existing engine, the invention provides an assembly tool for the low-pressure turbine of the engine, which realizes the rapid assembly of the low-pressure turbine and the core engine, and solves the loss during the assembly process. bearing problem

Images