Connecting rod and bolt bearing capacity of the diaphragm compressor

The integrated link is used for the axial force crankshaft structure, because the schedule of the axial force crankshaft structure is twice the eccentricity, so the integrated link is only used for small and medium-sized refrigeration units. The integrated link is simple and conducive for installation.

Because the split connecting rod cooperates with the crank pin of the crankshaft, so it can be used for a long travel arrangement of the refrigeration unit, most of the link is inlaid with thick wall piston pins. In order to better improve its wear resistance, the piston pin has a layer of wear resistant aluminum alloy.

Most of the split links have two cuts. Flat incision and oblique incision. Diaphragm compressor manufacturer introduced the flat incision type link is mostly easy for production and processing, and the link will not be shear stress effect, but most of the horizontal specifications. Most of the advantages and defects of the oblique incision are in turn with the flat incision.

Most of the large head cap of the split connecting rod is connected to the connecting link body with connecting rod bolts, and the typical connecting rod bolts. It not only screws up the middle of the large head cap and the link, but also accurately positions the middle of the large head cap and the link. Xuzhou diaphragm compressor is the accurate positioning surface of the connecting rod bolt, whose diameter exceeds the diameter of part of the external thread. The top part of the bolt is a plan, which cooperates with the plan on the connecting rod support seat to have the effect of avoiding the bolt rotation when twisting the nut.

The connecting bolts of the diaphragm refrigeration compressor bear the serious alternating load, so the structure type must be adopted to reduce stress, such as choosing ductile bolts. The raw material of the link bolt is high quality carbon steel, such as 400,35010, etc. Most of the connecting rods are shaft sleeve, raw material for wear resistant aluminum alloy, generally alloy copper.