Coaxiality-adjustable connecting device

Abstract

The invention discloses a coaxiality-adjustable connecting device. The coaxiality-adjustable connecting device mainly solves the problems that an existing belt connected between a motor of a pumping unit and a speed reducer is laborious to replace and install and prone to causing safety accidents. The coaxiality-adjustable connecting device is characterized in that a shaft coupling sleeve (4) is connected to an input shaft (6) of the speed reducer through a flat key (5); a plurality of steel balls (2) are circumferentially arranged outside the shaft coupling sleeve (4); the steel balls (2) aresupported by a steel ball support (3); a coupling wheel sleeve (1) sleeves the steel balls (2); the coupling wheel sleeve (1) is connected with a sealing sleeve (7) through bolts (8); and the coupling wheel sleeve (1) and the sealing sleeve (7) are embedded inside a motor. The coaxiality-adjustable connecting device is connected with the motor and a speed reducer, a belt transmission mechanism isomitted, the size is small, the structure is simple, the maintenance, disassembly, and assembly are convenient, and the operation is safe and stable.

Description

technical field [0001] The invention relates to the field of oilfield machinery, in particular to a coupling device with adjustable coaxiality. Background technique [0002] The pumping unit is the most common oil production equipment in oil field production. In the pumping unit, the power connection between the motor and the reducer is realized through a belt. In the belt transmission mechanism, the belt is a vulnerable part and needs to be replaced frequently. When replacing the belt, it is necessary to use a crowbar to forcefully pry the belt out of the belt groove on the pulley. At the same time, the pulley is manually rotated, and the old worn belt can be removed by prying repeatedly. The installation of the new belt is also laborious. When the input shaft deforms and protrudes, the pulley will also shake or protrude along with the input shaft, which will easily cause the belt to break or the pulley to fall, and even seriously scrape off the balance weight and cause th...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the disadvantages of the existing belts connected between the motor of the pumping unit and the reducer that are laborious to replace and install, and are likely to cause safety accidents, the present invention provides an adjustable coaxiality coupling device, the coaxiality adjustable coupling device Connect the motor and reducer, eliminating the belt drive mechanism, small size, simple structure, easy maintenance and disassembly, safe and stable operation

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