Ring groove rivet connection pair with function of adjusting initial pre-tightening force and installation method

Abstract

The invention discloses a ring groove rivet connection pair with an initial pre-tightening force adjusting function and a mounting method. Comprising a rivet and a lantern ring, and the rivet sequentially comprises a rivet cap head, a polished rod, an annular groove locking area, a spiral groove and a tail fixing structure; the lantern ring sequentially comprises a flange and a deformation area; the connecting pair further comprises a pre-tightening nut located at the outer end of the lantern ring during riveting fastening. Wherein the rivet spiral groove is provided with threads which are matched and fastened with the pre-tightening nut. The mounting method comprises the step of detachably mounting the rivet, the lantern ring and the pre-tightening nut. The pre-tightening nut is adopted for pre-installation, pre-installation can be conducted through a conventional wrench, the pre-tightening force and the pre-tightening state can be adjusted according to actual needs, the pre-tightening nut combines the advantages that a bolt is adjustable and a rivet does not loosen, pre-tightening installation does not affect the installation lantern ring, meanwhile, pre-tightening in the connecting process can be achieved, and the installation efficiency is improved. And meanwhile, the pre-tightening nut can be detached as required, so that the follow-up mounting operation is facilitated.

Description

technical field [0001] The invention belongs to the technical field of riveting, in particular to the design and manufacture of a pull rivet riveting fastener for connection, and belongs to the riveting type (B21J) and the fastener type (F16B) of metal machining. Background technique [0002] Pull rivets are commonly used fastening connectors in existing fastening connection methods, and are generally used to connect components that need to be bolted or riveted. When using the fastening operation, use special equipment for pulling rivets to clamp the two pieces to be joined, squeeze the metal of the annular collar and fill it with the recesses of the multiple annular grooves of the bolt, so that the collar and the The bolts are tightly combined and fastened. Pull rivet fasteners have the same tightening force and never loosening after assembly. [0003] In the actual construction process, for some complex and special requirements of the connection structure, if the parts a...

AI Technical Summary

Problems solved by technology

[0003] In the actual construction process, for some complex and special connection structures, if the parts are not pre-installed in advance, the mounting holes may deviate in the later stage of riveting connection, resulting in the failure of construction

[0004] Chinese application 202010203271 A ring groove rivet connection pair with pre-tightening function and its installation method discloses a ring groove rivet connection pair with a pre-tightening ring. The installation method is to squeeze the metal on the inner wall of the pre-tightening ring into the The pre-tightening force generated inside the rivet ring groove is fixed, and special riveting tools are required for pre-tightening work, and the pre-tightening force cannot be adjusted according to the actual situation

However, in the field use of existing riveting fastening, in many cases, it is necessary to adjust the size of the pre-tightening force according to the actual situation. This structure cannot meet the current use needs of the field, and has large limitations and is inconvenient to use.

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