A connecting rod for a reciprocating machine, in particular a compressor for refrigerating Equipment

Abstract

The connecting rod comprises: a first main piece (10) which includes a connecting rod small end (14), a shaft (16) which extends longitudinally and a half-big end (18) which defines a semi-cylindrical concave surface (20); a second main piece (12) constituted by a cap having a semi-cylindrical concave surface (20), the semi-cylindrical concave surfaces (20) of the first main piece (10) and the second main piece (12) having respective pairs of mating ends (22, 24); and securing means for securing at least one of the pairs of mating ends (22, 24) in such a manner as to form the connecting rod big end defining on its inside a cylindrical eye, in a diametral plane of which the pairs of mating ends (22, 24) are located. In each pair of mating ends (22, 24), a first end (22) has an appendage (26) which protrudes outwardly from the connecting rod big end and defines on its inside a cavity (34) in which a projection (36) protruding from a second end (24) is accommodate, the coupling between the appendage (26) and the projection (36) being produced with interference in the direction identified by the shaft (16) and with clearance in the direction perpendicular to that identified by the shaft (16) and lying in the general plane of the cylindrical eye.

Description

Technical field [0001] The invention relates to a connecting rod for reciprocating machinery, especially a connecting rod for compressors of refrigeration equipment. Background technique [0002] In detail, this link includes: [0003] -The first main part, which includes a small end of the connecting rod, a handle extending longitudinally, and a large end of a half that defines a semi-cylindrical concave surface, [0004] -A second main part formed by a cover having a semi-cylindrical concave surface, the semi-cylindrical concave surfaces of the first main part and the second main part having respective pairs of mating ends, and [0005] -A fixing device for fixing at least one pair of mating ends so as to form a large end of a connecting rod, the large end of the connecting rod defines a cylindrical hole on its inner side, and the pair of mating ends are located The cylindrical eyelet is on the plane along the diameter. [0006] This known type of connecting rod is disclosed in...

AI Technical Summary

Problems solved by technology

[0007] However, this known type of connecting rod leads to deformations of the contact parts, which cause deviations from the roundness of the profile of the eyelet at the large end of the connecting rod, which deviations, even slight, adversely affect the performance of the reciprocating machine. Function

[0008] Furthermore, the connection of the prior art does not allow the manufacture of the rigid part to be adapted to the shape of the other components normally assembled on the connecting rod, in particular the crank pin

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