Oil sucker with eccentric wheel and without beam

Abstract

A sliding eccentric wheel oil sucking machine without free beam is used in the oil extraction. The bracket is the cuboid frame; the hanging load wheel and the balance wheel are at the left-right end of the frame top beam. The lead slot is set at the middle and left of the beam, which can move along the fixed bolt by the lead slot; the balancing belt is connected with the balancing box by the balancing wheel; the balancing box can move along the lead rope by two leading wheel; the eccentric wheel and the power wheel is in the same axis; the central axis in power wheel is connected with the connecting pole top, the central axis can move up and down along the sliding track. One end of the hanging load belt is fixed on the eccentric wheel and the other is connected with the hanging belt device by the hanging load wheel; one end of the power belt is fixed on the frame and the other is fixed on the power wheel; the connecting pole lower is connected with the winch pin in reducer winch. The invention has the character of winch connecting pole structure of the beam oil extractor. It uses the sliding eccentric wheel and has long stroke; also it is convenience to operate and save energy, which can be used in all oil field to produce crude oil.

Description

technical field [0001] The invention relates to oil field mechanical oil production equipment, in particular to a beamless sliding eccentric pumping unit. Background technique [0002] At present, in oil field mechanical oil production equipment, there are two types of beam pumping units and beamless pumping units. Among them, the patent number of "extended range long-stroke pumping unit with no beam chain" is ZL87103481. This pumping unit Although the range-extending wheel structure is adopted, the chain transmission is still used, which has the problems of easy damage to the chain and poor lubrication conditions, which affects the service life of the whole machine; another example is the patent number of "double variable diameter balance wheel pumping unit": ZL952246236, Although this type of pumping unit adopts the coaxial and eccentric structure of large and small variable diameter wheels, the stroke is still limited to a certain extent. Therefore, the existing technolog...

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Problems solved by technology

[0002] At present, in oil field mechanical oil production equipment, there are two types of beam pumping units and beamless pumping units. Among them, the patent number of "extended range long-stroke pumping unit with no beam chain" is ZL87103481. This pumping unit Although the range-extending wheel structure is adopted, the chain transmission is still used, which has the problems of easy damage to the chain and poor lubrication conditions, which affects the service life of the whole machine; another example is the patent number of "double variable diameter balance wheel pumping unit": ZL952246236, Although this type of pumping unit adopts the coaxial and eccentric structure of large and small variable diameter wheels, the stroke is still limited to a certain extent. Therefore, the existing technology cannot meet the needs of oil field production with long stroke, convenient operation and maintenance, and long service life.

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