Aero-engine rotor assembly deep cavity bolt loading and unloading force limit adapter wrench

Abstract

The invention discloses a force limiting adapter coupling wrench for assembling and disassembling a bolt in an aircraft engine rotor component deep cavity, and aims to realize assembly and disassembly operation in an aircraft engine gourd-shaped deep cavity and solve the problem of difficulty in assembly and disassembly of the bolt between integral turbine wheels of an engine. According to the adopted technical scheme, the wrench comprises a supporting plate and a wrench body, wherein the supporting plate can be supported against a gourd-shaped opening of an aircraft engine rotor blade disk and is provided with a cambered hole; the wrench body passes through the cambered hole, can move along the cambered hole and comprises a first adapter, a steel pipe and a gear seat which are integrated; the steel pipe is curved; the end face of the first adapter is guaranteed to be perpendicular to the end face of the gear seat; the first adapter is connected with a second adapter; the second adapter is connected with a force limiting wrench capable of screwing the entire device; the gear seat is provided with a ratchet wheel mechanism; the ratchet wheel mechanism comprises a ratchet wheel and a pawl matched with the ratchet wheel; the ratchet wheel is provided with a counterbore; the size of the counterbore is the same as the size of a nut matched with the bolt of the blade disk.

Description

technical field [0001] The invention belongs to the technical field of engine assembly, and in particular relates to a force-limiting adapter wrench for loading and unloading bolts in a deep cavity of an aero-engine rotor assembly. Background technique [0002] The engine rotor assembly requires mounting and dismounting bolts located at the connecting part of the first-level blisk and the second-level blisk, and bears the axial force between the first and second blisks. It is one of the more important parts of the aero-engine rotor assembly. Its connection There are strict requirements on the tightening torque of bolts and nuts. The position of the bolt parts for loading and unloading is as follows: figure 1 As shown, A1 is the first-level blisk, A2 is the second-level blisk, and there are nuts and bolts that need to be assembled on the blisk. The first and second level blisks are gourd-shaped deep-cavity parts, and the shaft diameter of the gourd mouth is very small. The ...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems in the prior art, the present invention proposes a kind of bolt loading and unloading in the deep cavity of the aero-engine rotor assembly that can realize the loading and unloading operation in the hoist-shaped deep cavity of the aero-engine, and solves the problem of difficult loading and unloading of the connecting bolts between the overall blisks of the engine. Limiting adapter wrench

Images