Split connecting rod of reciprocating piston compressor

Abstract

The invention relates to a split connecting rod of a reciprocating piston compressor. The middle of the rod body end of the large end is provided with a groove, and the middle of the rod body of the small end is provided with a protrusion; two sides of the groove at the large head are respectively provided with first planes which are parallel and level mutually and are vertical to the rod body direction; the protrusion at the small end is matched with the groove shape of the large end; two sides of the protrusion at the small end are respectively provided with second planes which are matched and contact with the first planes; and when the large end and the small end are mutually matched and connected, the protrusion at the small end is positioned in the groove of the large end, the matching surfaces of the protrusion at the small end and the groove at the large end are mutually not contact, and the first planes and the second planes at two sides are mutually contact. Strain stress concentration condition does not exist at the root parts of door columns at two sides of the groove at the large head for the structure; and the component force is less than that of the existing structure, the direction is the same with the direction of the piston-connecting rod reciprocating motions, thus strain stress concentration condition does not exist at the root parts of the U-shaped door columns at two sides of the groove at the large head, and the force condition of the large head is improved greatly.

Description

technical field [0001] The invention belongs to the field of compressor manufacturing, in particular to a reciprocating piston split connecting rod of a compressor. Background technique [0002] The existing hermetic refrigeration compressor generally adopts the reciprocating piston crankshaft connecting rod mechanism, such as figure 1 Shown mainly includes cylinder block 1, crankshaft 2, connecting rod 3, piston 4, piston pin 5, wherein, one end of connecting rod 3 is sleeved on the eccentric shaft of crankshaft 2, the other end is sleeved on piston pin 5 and passes through piston pin 5 The piston 4 and the connecting rod 3 are connected together, and the crankshaft 2 rotates to push the connecting rod 3 and the piston 4 to make a reciprocating linear motion along the slideway of the cylinder block 1 . figure 1 In the prior art shown, since the connecting rod 3 generally adopts an integral structure, in order to ensure the smooth progress of the assembly, a relief groove 6...

AI Technical Summary

Problems solved by technology

And because the force components F1 and F2 are perpendicular to the V-shaped surface of the big head, there will be stress concentration at the root of the protrusions on both sides of the V-shaped groove 7-1 of the big head.

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