Coupling for pumping unit

Abstract

The invention discloses a coupling for a pumping unit. The coupling comprises two coupling halves. The two coupling halves are respectively connected onto two rotary shafts, a connecting sleeve with internal teeth is arranged at the tail end of one of the coupling halves, external teeth which are matched with the internal teeth of the connecting sleeve are arranged on the outer circumference of the tail end of the other coupling half, and the external teeth are sealed in the connecting sleeve by a sealing sleeve positioned at the rear of the external teeth after the connecting sleeve sleeves the external teeth. The coupling with the structure has the advantages that the coupling half with the external teeth only needs to be nested in the other coupling half when connected with the other coupling half, accordingly, the coupling is quite simple in structure, is low in manufacturing cost and is quite convenient to disassemble, assemble and maintain, and has few components; sealing links are few, the sealing performance can be improved, and leakage of lubricating oil can be prevented; flanges which are traditionally used in connecting procedures are omitted, so that the two rotary shafts can slide relatively, and the coupling can bear certain axial and radial offset when used on equipment such as the pumping unit.

Description

[0001] technical field [0002] The invention relates to a shaft coupling, in particular to a shaft coupling for an oil pumping unit. Background technique [0003] The traditional drum gear coupling generally includes two half-couplings, each half-coupling has an outer gear shaft and an inner gear sleeve sleeved outside the outer gear shaft, and the two half-couplings of the two half-couplings have The two inner tooth sleeves are connected by flanges. The traditional coupling of this structure has complex structure, many parts and high manufacturing cost; There are many sealing links, so the sealing performance is poor, and the lubricating oil is easy to leak. On the other hand, the two half-couplings are connected by flanges, which are rigid and cannot withstand certain deviations when used on pumping units and other equipment. displacement. Contents of the invention [0004] The technical problem to be solved by the present invention is to provide a shaft coupling ...

AI Technical Summary

Problems solved by technology

[0003] The traditional drum gear coupling generally includes two half-couplings, each half-coupling has an outer gear shaft and an inner gear sleeve sleeved outside the outer gear shaft, and the two half-couplings of the two half-couplings have The two inner tooth sleeves are connected by flanges. The traditional coupling of this structure has complex structure, many parts and high manufacturing cost; There are many sealing links, so the sealing performance is poor, and the lubricating oil is easy to leak. On the other hand, the two half-couplings are connected by flanges, which are rigid and cannot withstand certain deviations when used on pumping units and other equipment. displacement

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