Fixing device of belt wheel

Abstract

The invention discloses a belt wheel, adjusted through a rod pumped well in an oil field, on a motor, and particularly relates to a fixing device of the belt wheel. The fixing device of the belt wheel comprises a belt wheel body. The belt wheel body is sleeved with a second wheel disc. The second wheel disc is provided with an inner hole allowing the outer edge of a first wheel disc to be sleeved. A locating groove allowing a belt to be located is formed in the outer edge of the second wheel disc. Bolt assemblies are arranged between the first wheel disc and the second wheel disc and comprise studs, nuts and screws. Mounting holes allowing the studs to penetrate are formed between the first wheel disc and the second wheel disc. One ends of the studs penetrate in the mounting holes and are provided with reverse-spiral internal threads connected with the screws, and the other ends of the studs are provided with external threads connected with the nuts. The nuts are clamped between the screws and the second wheel disc. The technical defect that belt wheels and motor shafts are in butt joint one to one in the prior art, and consequently the demounting workload is large after rusting is overcome, and the fixing device of the belt wheel can reduce damage to the belt wheel during demounting.

Description

technical field [0001] The invention relates to a pulley for adjusting a pulley on a motor of an oil pumping unit in an oil field, in particular to a fixing device for the pulley. Background technique [0002] At present, the specifications of the belt pulleys on the motors of the pumping units in the oil field are configured according to the pumping times of the pumping units, and are generally equipped with 3 to 4 belt pulleys of different specifications. When adjusting the upper pulley of the motor according to the number of strokes, since the motor works in the open air and has been exposed to wind and rain for a long time in nature, the key body installed between the motor shaft and the pulley shaft hole has been corroded. If you want to remove the pulley from the motor shaft It is very difficult to get off, and some pulleys are damaged to varying degrees during the disassembly process, which is not only labor-intensive, but also causes economic losses. Contents of th...

AI Technical Summary

Problems solved by technology

When adjusting the upper pulley of the motor according to the number of strokes, since the motor works in the open air and has been exposed to wind and rain for a long time in nature, the key body installed between the motor shaft and the pulley shaft hole has been corroded. If you want to remove the pulley from the motor shaft It is very difficult to get off, and some pulleys are damaged to varying degrees during the disassembly process, which is not only labor-intensive, but also causes economic losses.

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