Traction tool for low-pressure turbine of engine

Abstract

The invention provides a traction tool for a low-pressure turbine of an engine. The tool comprises a torque transmission bushing and a traction shaft sleeve, wherein in an assembly process, the traction end of a low-pressure turbine shaft sequentially passes through a core machine, the traction shaft sleeve and a connecting shaft sleeve and extends to the outside of a fan rotor, in an assembly process of a low-pressure turbine, torsion force is applied to a traction shaft outside, the traction shaft and the connecting shaft sleeve rotate synchronously, in the rotation process of the fan rotor,the traction shaft is driven to move axially through threads, so that the low-pressure turbine shaft has double acting force of rotation and axial movement, furthermore, a bearing cylindrical rolleron the low-pressure turbine shaft is gradually assembled into a bearing outer ring during rotation, thus solving the problem of mechanical collision between the cylindrical roller and the bearing outer ring in an existing assembly process.

Description

technical field [0001] The invention relates to the technical field of engine assembly, in particular to a traction tool for a low-pressure turbine of an engine. Background technique [0002] The low-pressure turbine 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 behind the high-pressure turbine rotor. On the journal, it is part of the core unit. During assembly, the pressure turbine and the core machine are assembled horizontally, the low-pressure turbine is horizontally assembled to the core machine unit under the action of traction, the bearing cylindrical roller enters the bearing outer ring horizontally, and the distance between the bearing cylindrical roller outer diameter and the bearing inner ring The gap is only 0.07mm, and the length of the low-...

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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 a traction 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

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