Piston rod and crosshead body connection adjusting structure

Abstract

The invention provides a piston rod and crosshead body connection adjusting structure. The piston rod and crosshead body connection adjusting structure has the advantages of being convenient to install, good in manufacturability, safe, attractive and the like. After the radial gap of a piston rod is adjusted, all the other parts for adjustment can be detached, potential safety hazards are avoided, the parts are good in manufacturability, and meanwhile it can be guaranteed that adjustment can be performed many times. The piston rod and crosshead body connection adjusting structure comprises a crosshead body, a hydraulic nut, the piston rod, a gasket and a flange. The hydraulic nut is arranged in an inner hole in the front end of the crosshead body, the positioning face of the flange is fastened to the axial outer end face of the crosshead body through a bolt, the piston rod penetrates through a center hole of the flange and then is positioned to the hydraulic nut, and the gasket is arranged between the axial outer end face of the crosshead body and the positioning face of the flange. The piston rod and crosshead body connection adjusting structure is characterized in that the space between the inner end face of the gasket and the axial outer end face of the crosshead body is stuffed with the adjustable gasket, the adjustable gasket is in the shape of a flange, and an inner side convex shaft of the flange is sleeved with the adjustable gasket.

Description

technical field [0001] The invention relates to the technical field of connection structure of a piston rod, in particular to a connection adjustment structure of a piston rod and a crosshead body. Background technique [0002] Process reciprocating piston compressors are widely used in various industries. The crosshead is an important part connecting the connecting rod for rocking motion and the piston rod for reciprocating motion, and it has a guiding function. There are many ways to connect the crosshead body with the piston rod. In general, for models with a piston force below 32T, the crosshead body screw hole is used to fasten the thread and flange on the piston rod. See Figure 1 ~ Figure 3 As shown, the piston rod 6' is clamped by the hydraulic nut 2' to the flange 4', and is fastened to the axial outer end surface of the crosshead body 1' with six bolts 5' by means of hydraulic tightening. Changing the thickness of the washer 3' can adjust the axial clearance of ...

AI Technical Summary

Problems solved by technology

Although this structure has fewer components, the adjusting gasket 7' includes an adjusting part, a fastening part, and a threaded hole part, which makes the processing technology of the adjusting gasket poor, and it is difficult to meet the design requirements. At the same time, the adjusting gasket 7' and the four support bolts 8' must remain in the connection structure between the piston rod 6' and the crosshead body 1' after the adjustment is completed. At this time, the support bolts must be locked, which makes the adjustment of the gasket 7' There is no movable margin in the radial adjustment part, which increases safety hazards and affects the aesthetics of assembly

Images