Nut force limiting device and using method thereof

Abstract

The invention relates to a nut force limiting device and a using method thereof. The device comprises an n-shaped support. Locking holes are formed in the lower ends of the n-shaped support so as to limit the n-shaped support. Locating holes and a first through hole are formed in the upper end of the n-shaped support to be used for being connected with a spanner assembly in an inserted mode. The spanner assembly is mounted on the n-shaped support and comprises an upper crossbeam. A second through hole is formed in one end of the upper crossbeam. A torque spanner is externally connected to the interior of the second through hole. The upper crossbeam is provided with a boss corresponding to the lower end of the second through hole. The boss is clamped in the corresponding locating hole. The upper crossbeam can rotate relative to the n-shaped support. The upper crossbeam is hinged to one end of a connecting rod, and the other end of the connecting rod penetrates through the first through hole to be fixedly connected with a lower crossbeam. A spanner head is arranged at the end of the lower crossbeam. Limiting units are correspondingly arranged on the upper crossbeam and the connecting rod. Manufacturing is simple, assembling is easy and convenient, implementation is easy, and high-torque force limiting tightening is guaranteed; labor intensity is relieved, the assembling period is shortened, and the working efficiency is improved.

Description

Technical field: [0001] The invention relates to the technical field of aero-engine assembly, in particular to a nut force limiting device and a using method thereof. Background technique: [0002] In the overall assembly process of aero-engines, the nuts on the rotating body usually need to be tightened with a large torque limit. Usually, the rotating body has anti-twist teeth, but some rotating bodies do not involve anti-twist sleeves due to space and structural constraints. Teeth, when the force is limited in this state, the rotating body rotates together and cannot be tightened with force limit. For this reason, the research work on the braking device and its application method of the large torque and force limiting of the engine rotating body is carried out, and the purpose is to solve the problem of large torque and force limiting tightening of the rotating body without a reverse torsion structure through comprehensive and systematic testing, analysis and research. I...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a nut force limiting device and its use method, which is used for engine assembly and solves the problem of fixing the nut with high torque force limit in the inner cavity of the engine

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