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Variable-displacement hydraulic motor control system

A variable hydraulic motor and hydraulic motor technology, applied in the field of aviation electromechanical systems, can solve the problems of large system flow and increased difficulty in the development of electro-hydraulic reversing valves, and achieve the effect of improving efficiency

Inactive Publication Date: 2021-04-13
XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the high-power control system, due to the large flow of the system, the difficulty of developing the electro-hydraulic directional valve is greatly increased

Method used

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  • Variable-displacement hydraulic motor control system

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Embodiment Construction

[0018] In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below in conjunction with the drawings in the embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of the invention. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention. Embodiments of the present invention will be described in detail b...

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Abstract

The invention provides a variable-displacement hydraulic motor control system. The system comprises a control unit (1), an oil filter (2), an electromagnetic valve (3), a switch valve (4), an electro-hydraulic servo valve (5), a swash plate control piston (6), a flow limiting valve (7), a variable-displacement hydraulic motor (8) and a rotary motion mechanism; the first end (51) of the electro-hydraulic servo valve is connected with one end of the control unit (1); the other end of the control unit (1) is connected with the first end (31) of the electromagnetic valve; the second end (32) of the electromagnetic valve and the first end (41) of the switch valve are connected with an oil supply source through the oil filter (2); the third end (33) of the electromagnetic valve and the second end (52) of the electro-hydraulic servo valve are connected with an oil return tank; the fourth end (34) of the electromagnetic valve is connected with the second end (42) of the switch valve, and the third end (43) of the switch valve is connected with the third end (53) of the electro-hydraulic servo valve; and the third end of the electro-hydraulic servo valve is connected with the variable-displacement hydraulic motor (8) through the flow limiting valve (7).

Description

technical field [0001] The invention belongs to aviation electromechanical systems, and relates to a variable displacement hydraulic motor control system. Background technique [0002] Compared with the fixed-displacement hydraulic motor control system, the variable-displacement control system can greatly improve system efficiency, reduce power consumption, and respond quickly; [0003] The current variable-displacement hydraulic motor reversing control is controlled by an electro-hydraulic reversing valve, so a large-flow electro-hydraulic reversing valve must be connected in series on the main oil circuit of the motor. Due to the large flow resistance of the electro-hydraulic reversing valve, the efficiency of the variable displacement motor control system has to be greatly reduced. In the high-power control system, due to the large flow of the system, the difficulty of developing the electro-hydraulic directional valve is greatly increased. Contents of the invention ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03C1/40
CPCF03C1/0686
Inventor 米月星江辉军白凡玉李高磊
Owner XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
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