Assembly of membrane pump through 4-row cylindrical roller bearings

Abstract

The invention relates to assembly of a membrane pump through 4-row cylindrical roller bearings, belonging to bearing manufacturing industry in the field of machining. According to the invention, a small end bushing is replaced by a rolling bearing, rigidity of the whole set of components is effectively ensured by an integrated structure of an outer ring, concentration of stress at a contact place is avoided, and damage due to an impact load is prevented; through an oil hole on the outer circle of the outer ring and an oil line in a piston pin, a lubricating effect is improved, and through a metal sealing ring embedded on the end face of the outer ring, oil storage and lubrication can be effectively completed. The assembly, provided by the invention, has the advantages of compact structure, complete performance, reasonable backlash control and reliable operation of devices.

Description

technical field [0001] The invention relates to the assembly of a four-row cylindrical roller bearing for a diaphragm pump, which belongs to the bearing manufacturing industry in the field of mechanical processing. Background technique [0002] Usually, the structure adopted at the small end of the connecting rod is that one end of the small end is equipped with a small head shoe (copper sleeve) connected to the piston pin (or crosshead pin), but a thin layer of oil film is required between the small head shoe and the piston pin. Lubrication. If there is direct friction between the bearing bush and the piston pin due to poor lubrication, the friction will generate a high temperature. In addition, the bearing bush may also burn the bush due to factors such as excessive load, impurities in the lubricating oil, or abnormal viscosity, resulting in reciprocating The movement fails, affecting the normal operation of the equipment. [0003] Since the small end of the connecting r...

AI Technical Summary

Problems solved by technology

If there is direct friction between the bearing bush and the piston pin due to poor lubrication, the friction will generate a high temperature. In addition, the bearing bush may also burn the bush due to factors such as excessive load, impurities in the lubricating oil, or abnormal viscosity, resulting in reciprocating Motion failure, affecting the normal operation of the equipment

[0003] Since the small end of the connecting rod has relatively strict requirements on lubrication, most of the lubricating oil required for the small end of the connecting rod is drawn from the large end of the connecting rod, so there are often oil holes drilled in the rod body; The structure in which the oil pipe is closely attached to one side of the shaft is rarely used now, but the above-mentioned method has poor lubricating effect and the effect of controlling the clearance

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