Double-rotor bidirectional variable displacement pump or motor

Abstract

The invention discloses a double-rotor bidirectional variable displacement pump or motor. The central axis of a first containing cavity and the central axis of a second containing cavity intersect, and the included angle between the central axes is adjustable. The tail ends of first plungers are hinged to the tail ends of second plungers in a one-to-one manner. All the hinged rotation centers areon the angular bisector plane of the included angle. According to the double-rotor bidirectional variable displacement pump or motor, by means of the V-shaped matrix structure with the adjustable included angle, the adjustability of working volume of the pump or motor is achieved, so that the displacement of the whole V-type pump can achieve positive and negative volume stepless adjustment under the conditions of not changing the rotation direction and a working fluid channel, and therefore function stepless adjustment and function switching of the pump and motor under the same working conditions are achieved; compared with an existing pump or motor, under the same volume, larger processing capacity can be provided, efficiency is improved, stepless flow adjustment can be conducted, and thebidirectional function is achieved (namely, under the same steering condition, flowing directions are interchangeable); and the double-rotor bidirectional variable displacement pump or motor meets different demands of various fields and has good applicability.

Description

technical field [0001] The invention relates to the field of transmission drive, in particular to a double-rotor bidirectional variable pump or motor. Background technique [0002] Hydraulic motors and hydraulic pumps are reversible fluid machines, which are relatively common equipment in many fields such as energy, medicine and chemical industry, and equipment manufacturing. Traditional hydraulic motors and hydraulic pumps use plungers as energy conversion components, and use the inclination angle of the swashplate to realize the reciprocating motion of the plungers to realize the suction and output of liquid, while the process of hydraulic motors is reversed; the plunger pump (or hydraulic pressure pump) of this structure Motor) to adjust the flow rate by adjusting the inclination angle of the swash plate. The pump or hydraulic motor with the above structure is designed with asymmetrical load, the system wears a lot, the lubrication between the swash plate and the sliding...

AI Technical Summary

Problems solved by technology

The pump or hydraulic motor with the above structure is designed with asymmetrical load, the system wears a lot, the lubrication between the swash plate and the sliding shoe is difficult, the friction loss is large, the axial flow distribution mechanism has a large discharge flow, and the unfavorable load is large, and the space at the end of the swash plate is wasted. The overall displacement is small, and the cantilever The structure cannot effectively overcome the overturning moment

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