A tightening and force limiting device and its application method

Abstract

The invention discloses a screwing and force limiting device and a using method thereof. The device comprises a locking device and a spanner assembly. The spanner assembly is installed on the locking device. The locking device comprises a locking sleeve which surrounds the spanner assembly. The upper end of the locking sleeve is fixedly connected with a locking disc. A first through hole is formed in the locking disc and used for being in plug connection with the spanner assembly. The spanner assembly comprises a transmission arm. The lower portion of one end of the transmission arm is connected with one end of the locking disc. A positioning hole is formed in the upper portion of one end of the transmission arm. A torque spanner is externally connected to the interior of the positioning hole. The transmission arm can rotate relative to the locking disc. The other end of the transmission arm is fixedly connected with a first spanner arm. The first spanner arm penetrates the first through hole. A pull rod is arranged in an inner cavity of the first spanner arm. The lower end of the pull rod is hinged to one end of a second spanner arm. The other end of the second spanner arm is fixedly connected with a spanner head. The purpose of assembling a rotor of a special structure is achieved, the cost for redesigning and manufacturing a tool is saved, and the screwing and force limiting device can be applied to assembling similar rotors and has the wide market application prospect.

Description

[0001] Technical field: [0002] The invention relates to the technical field of engine component assembly, in particular to a tightening and force limiting device and a method for using the same. [0003] Background technique: [0004] With the further improvement of the thrust-to-weight ratio and reliability of the engine, the design structure of the new-generation engine rotor is increasingly widely used in modern aero-engines, and the special structure of the rotor structure also puts forward higher requirements for the assembly and disassembly of the rotor. The rotor is composed of multi-stage disks, and has a journal. The nut connecting the rotor journal and the disk has a long axial distance from the front end of the journal. In addition, the diameter of the center hole of the disk is small, the space is narrow, it cannot be operated manually, and it is difficult to limit the force. , It is easy to cause unreliable force limiting. The current rotor structure and the spec...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a tightening and force limiting device and its use method, which solves the problems of narrow space, visual and manual inaccessibility during the assembly and disassembly of the rotor disk and journal of the special structure. The connection between the disk and the journal is converted into a general structure of the rotor connection, which ensures the stability of the rotor during assembly and disassembly

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